An on-board support platform system for a roadheader

Abstract

The present invention relates to an on-board support platform system for a roadheader, which includes a roadheader, a multi-stage telescopic mechanism fixedly connected to both sides of the crawler chassis of the roadheader at one end, a vertical support device connected to the other end of the multi-stage telescopic mechanism, a top frame mechanism fixedly connected to the top of the vertical support device, a lifting platform arranged below the top frame mechanism, and an operation console arranged inside the roadheader; the multi-stage telescopic mechanism telescopes along the horizontal direction of the roadheader; an adjustment device is arranged between the vertical support device and the multi-stage telescopic mechanism; the adjustment device can be adjusted along the width direction and the height direction of the roadheader; the operation console provides hydraulic control for the multi-stage telescopic mechanism, the vertical support device, the top frame mechanism, and the lifting platform. The present invention also relates to its construction method. By adopting hydraulic control, all-round adjustment of the lifting platform and the top frame mechanism can be realized, safety accidents can be reduced, the adjustment time can be shortened, and the efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of roadway support, and in particular to an on-board support platform system for a roadheader and a construction method thereof. Background Technique

[0002] Bolting support is a very effective way to support coal mine roadways. Bolts can change the mechanical state of the surrounding rock itself, and then achieve the purpose of maintaining the stability of the roadway. At present, after the roadheader advances one working step forward, it needs to stop working first. After the bolt drilling rig is manually operated to complete the bolt support operation in the unsupported roof area, the roadheader can start the next working step. The work progress is slow, the labor intensity of workers is high, and there are relatively large safety hazards.

[0003] In the existing on-board temporary support device of the roadheader, the top frame is installed on the flipping frame. When support is needed, the flipping frame body flips from back to front, and then the top frame can reach the position where support is needed to carry out effective support. The flipping process requires a relatively high roadway height. This flipping type on-board temporary support device can only be used in roadways with a height of more than 3.5m. Roadways with a height of less than 3.5m cannot use this kind of on-board temporary support device.

[0004] In roadways with a height greater than 4m, due to the too high height, it is difficult for workers and equipment to reach the roof. Especially for the pre-tightening and cutting of the top cable, and the construction and installation of the rib bolts and cables at the shoulder socket are difficult. Only the low-efficiency layered tunneling process can be adopted, that is, the cutting head first cuts a certain distance from the upper part, and then relies on manual operation to implement the anchoring operation. After the upper section is completed by the anchoring work, the roadheader is started to cut a certain height, and the full-section construction cannot be completed after one-time cutting.

[0005] The support method adopted in the prior art CN213450397U is a temporary support mechanism installed above the cutting part of the cantilever roadheader. A support mechanism is installed on the top of the rotary table of the cantilever roadheader, and an operation platform and an anchoring mechanism are installed at the free end of the support mechanism. In this scheme, a support mechanism of the cantilever is arranged above the cantilever roadheader. First, the support mechanism of the cantilever is deformed by force, and the anchoring mechanism and the support mechanism need to rotate. It cannot contact the upper temporary support mechanism, and the support point of the temporary support mechanism is not directly below the temporary support beam, resulting in a reduction in support strength, inability to bear large pressures, and a reduction in safety.

[0006] The prior art CN112253203A also adopts an extended platform and a support bracket fixed on the cutting part. First of all, the gravity of the entire extended platform and support bracket is mainly set on the cutting part, bringing a relatively large load pressure to the cutting part of the roadheader itself. If it is in a large support force for a long time, it will cause deformation of the cutting part of the roadheader, affecting the working function of the roadheader and causing damage or deformation of the whole roadheader. In addition, since it is located above the cutting part, it cannot extend forward, and the position at the front end of the cutting part of the roadheader cannot be supported. Most of the on-site support is due to space limitations, and the support needs to extend a certain distance forward to the front end of the roadheader before support. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to solve the problems in the prior art, such as low support strength, great difficulty for workers and equipment to reach the roof, especially the pre-tightening and cutting of the top anchor cables, and the great difficulty in the construction and installation of the rib bolts and anchor cables in the shoulder socket part. Only the inefficient stratified tunneling process can be adopted, and full-face construction cannot be carried out.

[0008] The present invention is realized by the following technical solutions: An on-board support platform system for a roadheader, including a roadheader, a multi-stage telescopic mechanism fixedly connected to both sides of the crawler chassis of the roadheader at one end, a vertical support device connected to the other end of the multi-stage telescopic mechanism, a top frame mechanism fixedly connected to the top of the vertical support device, a lifting platform arranged below the top frame mechanism, and an operation console arranged in the roadheader;

[0009] The multi-stage telescopic mechanism expands and contracts along the horizontal direction of the roadheader;

[0010] An adjustment device is arranged between the vertical support device and the multi-stage telescopic mechanism;

[0011] The adjustment device can be adjusted along the width direction and height direction of the roadheader;

[0012] The operation console provides hydraulic control for the multi-stage telescopic mechanism, the vertical support device, the top frame mechanism and the lifting platform.

[0013] Furthermore:

[0014] The multi-stage telescopic mechanism includes a left telescopic mechanism arranged on the left side of the crawler chassis of the roadheader and a right telescopic mechanism arranged on the right side of the crawler chassis of the roadheader;

[0015] The left telescopic mechanism includes a left support leg fixed to the left side of the crawler chassis of the roadheader, a left support frame fixed to the upper plane of the left support leg, a left outer cylinder slidably connected to the upper plane of the left support frame, a left middle cylinder penetrating through the inner side of the left outer cylinder, and a left inner cylinder penetrating through the inner side of the left middle cylinder;

[0016] The rear end of the left support frame is rotatably connected to a left outer cylinder oil cylinder;

[0017] The free end of the left outer cylinder oil cylinder is rotatably connected to the front lower end of the left outer cylinder;

[0018] The front upper end of the left middle cylinder is rotatably connected to a left middle cylinder oil cylinder;

[0019] The rear upper end of the left outer cylinder is rotatably connected to the free end of the left middle cylinder oil cylinder;

[0020] The front upper end of the left outer cylinder is rotatably connected to a left inner cylinder oil cylinder; the free end of the left inner cylinder oil cylinder is rotatably connected to the adjusting device;

[0021] The right telescopic mechanism and the left telescopic mechanism are symmetrically arranged on the left and right sides of the roadheader.

[0022] Furthermore:

[0023] A left slide rail is fixedly connected to the left support frame; the left slide rail is provided with an inverted T-shaped slide rail groove A;

[0024] The left outer cylinder includes an inverted T-shaped slideway adapted to the inverted T-shaped slide rail groove and a left fixed cylinder fixedly connected to the upper end of the inverted T-shaped slideway; the left middle cylinder slides within the left fixed cylinder.

[0025] Furthermore:

[0026] The adjusting device includes a left adjusting device and a right adjusting device;

[0027] The left adjusting device includes a left vertical adjusting seat fixedly connected to the front end of the left inner cylinder, an upper left guiding seat arranged at the upper end of the left vertical adjusting seat, and a lower left guiding seat arranged at the lower end of the left vertical adjusting seat;

[0028] The left vertical adjusting seat includes a left back plate, an upper lifting ear fixedly connected to the upper end of the left back plate, a lower lifting ear fixedly connected to the lower end of the left back plate, a left side plate fixedly connected to the left side of the left back plate, and a right side plate fixedly connected to the right side of the left back plate;

[0029] A through high-low long slot adjusting hole C is provided from the left side plate to the right side plate;

[0030] A left pin shaft is slidably connected within the high-low long slot adjusting hole C;

[0031] The left pin shaft is rotatably connected to the free end of the left inner cylinder oil cylinder;

[0032] The left adjusting device further includes a left vertical shaft rotatably connected to the left vertical adjusting seat;

[0033] An upper left horizontal long slot is provided on the upper left guiding seat;

[0034] A lower left guiding seat is provided with a lower left horizontal long groove;

[0035] The left vertical shaft is slidably connected to both the upper left horizontal long groove and the lower left horizontal long groove;

[0036] The upper left guiding seat and the lower left guiding seat are fixedly connected to the vertical supporting device;

[0037] The right adjusting device and the left adjusting device are symmetrically arranged on the left and right sides of the roadheader.

[0038] Furthermore:

[0039] The vertical supporting device includes a left vertical supporting device and a right vertical supporting device;

[0040] The left vertical supporting device includes a left column body, an upper left middle cylinder slidably arranged at the upper end of the inner wall of the left column body, an upper left support pillar slidably arranged at the upper end of the inner wall of the upper left middle cylinder, a lower left middle cylinder slidably arranged at the lower end of the inner wall of the left column body, a lower left support pillar slidably connected to the lower end of the inner wall of the lower left middle cylinder, and a left double-headed secondary oil cylinder fixedly connected to the middle of the left column body;

[0041] The upper free end of the left double-headed secondary oil cylinder is fixedly connected to the upper left column;

[0042] The lower free end of the left double-headed secondary oil cylinder is fixedly connected to the lower left column;

[0043] The upper left column is provided with an upper left protruding screw; the upper left middle cylinder is provided with an upper left long groove adapted to the upper left protruding screw;

[0044] The lower left column is provided with a lower left protruding screw; the lower left middle cylinder is provided with a lower left long groove adapted to the lower left protruding screw;

[0045] The right vertical supporting device includes a right column body, an upper right middle cylinder slidably arranged at the upper end of the inner wall of the right column body, an upper right support pillar slidably arranged at the upper end of the inner wall of the upper right middle cylinder, a lower right middle cylinder slidably arranged at the lower end of the inner wall of the right column body, a lower right support pillar slidably connected to the lower end of the inner wall of the lower right middle cylinder, and a right double-headed secondary oil cylinder fixedly connected to the middle of the right column body;

[0046] The right vertical supporting device and the left vertical supporting device are symmetrically arranged on the left and right sides of the roadheader.

[0047] Furthermore:

[0048] The upper end of the upper left column is fixedly connected with a left spherical joint bearing; the left spherical joint bearing is rotationally connected with the top frame mechanism.

[0049] Further:

[0050] On the side of the left vertical column body close to the center of the roadheader, a left pipe body is fixedly arranged; a left platform lifting oil cylinder is arranged inside the left pipe body;

[0051] The free end of the left platform lifting oil cylinder is hinged with a left platform connecting plate;

[0052] On the side of the right vertical support device close to the center of the roadheader, a right pipe body is fixedly arranged; a right platform lifting oil cylinder is arranged inside the right pipe body;

[0053] The free end of the right platform lifting oil cylinder is hinged with a right platform connecting plate;

[0054] The lifting platform is fixedly connected to the left platform connecting plate and the right platform connecting plate.

[0055] Further:

[0056] The lifting platform includes a main platform, a folding platform rotatably connected to the main platform, a left main side platform slidably connected to the lower left of the main platform, a right main side platform slidably connected to the lower right of the main platform, a left folding side platform slidably connected to the lower left of the folding platform, and a right folding side platform slidably connected to the lower right of the folding platform;

[0057] The lifting platform further includes a left rotation oil cylinder fixedly connected to the left platform connecting plate and a right rotation oil cylinder fixedly connected to the right platform connecting plate; the rotation output end of the left rotation oil cylinder is fixedly connected to the left side of the folding platform;

[0058] The rotation output end of the right rotation oil cylinder is fixedly connected to the right side of the folding platform;

[0059] The left side of the main platform is vertically and fixedly connected to the left vertical column body;

[0060] The right vertical support device includes a right vertical column body;

[0061] The right side of the main platform is vertically and fixedly connected to the right vertical column body.

[0062] Further:

[0063] The top frame mechanism includes a top frame body fixedly connected to the upper ends of the left vertical support device and the right vertical support device, a left top frame oil cylinder fixedly connected to the left side of the top frame body, a right top frame oil cylinder fixedly connected to the right side of the top frame body, a front extension frame fixedly connected to the front movable end of the left top frame oil cylinder, and a rear extension frame fixedly connected to the rear movable end of the left top frame oil cylinder;

[0064] The front movable end of the right top frame oil cylinder is fixedly connected to the front extension frame;

[0065] The rear movable end of the right top frame oil cylinder is fixedly connected to the front outrigger;

[0066] The top frame is a frame structure;

[0067] The front extension frame is slidably connected to the front end of the top frame body;

[0068] The rear extension frame is slidably connected to the rear end of the top frame body.

[0069] Further:

[0070] Step 1: After the cutting part of the tunnel boring machine is finished, the left vertical support device and the right vertical support device push the top frame mechanism to move upward to a certain distance above the top of the tunnel boring machine, and the left platform lifting cylinder and the right platform lifting cylinder push the lifting platform upward to above the top of the tunnel boring machine;

[0071] Step 2: The multi-stage telescopic mechanism pushes the front vertical support device, the top frame mechanism and the lifting platform to move toward the front of the tunnel boring machine until they reach the working position and stop;

[0072] Step 3: The left top frame cylinder pushes the front extension frame to move toward the front end, and the right top frame cylinder pushes the rear extension frame to move toward the rear end until the top frame mechanism is extended to the working state.

[0073] Step 4: The left double-headed secondary cylinder and the right double-headed secondary cylinder continue to push the top frame mechanism upward until the top frame mechanism supports the roadway; the left double-headed secondary cylinder and the right double-headed secondary cylinder move downward until the left lower column and the right lower column contact the ground and then stop;

[0074] Step 5: The left rotating cylinder and the right rotating cylinder rotate the folding platform to the same plane as the main platform and stop; unfold the left main side platform, the right main side platform, the left folding side platform and the right folding side platform;

[0075] Step 6: The staff stands on the lifting platform to perform anchoring operations. The left platform lifting cylinder and the right platform lifting cylinder push the lifting platform up and down according to the different height operation requirements;

[0076] Step 7: After completing all the work in step 6, start the left rotating cylinder and the right rotating cylinder to rotate the folding platform to the upper plane of the main platform, and retract the left main side platform, the right main side platform, the left folding side platform and the right folding side platform; lower the lifting platform and the top frame mechanism to the same height as step 1; retract the multi-stage telescopic mechanism to both sides of the crawler base of the tunnel boring machine; and then retract the lifting platform and the top frame mechanism to a fully retracted state;

[0077] Step 8: Start the tunnel boring machine and dig forward.

[0078] Beneficial Effects

[0079] 1. It can be used in various forms of roadways

[0080] The present invention uses a multi-stage telescopic mechanism connected to both sides of the crawler base of the roadheader, a vertical support device connected to the other end of the multi-stage telescopic mechanism, a top frame mechanism fixedly connected to the top of the vertical support device, a lifting platform arranged below the top frame mechanism and other mechanisms to perform telescopic adjustment in the length direction and height direction. It forms a structure of the roadheader with double columns standing upright to support the temporary support and the workers on the lifting platform, increasing the stability effect of the on-board support platform of the roadheader. Since the lifting platform breaks through the suspended structure mode of the existing products located above the cutting head of the roadheader, especially the safety of the manual anchoring work is greatly improved, and the requirement of the existing technology for the height of the roadway by the flipping structure is avoided, and it is applicable to various forms of roadway operations.

[0081] 2. Firm support effect, remote operation, high safety

[0082] Inside the left and right column bodies of this application, there are left and right double-headed secondary oil cylinders respectively pushing the upper left and right columns and the lower left and right columns; the lower left and right columns support the ground and play the role of a stabilizing mechanism; the upper left and right columns are connected to the temporary support frame body, support the roof of the roadway, and fix the whole mechanism to form a sky-reaching and ground-standing type. This makes the support effect more firm and prevents the occurrence of large-area coal seam caving caused by suspension. Below, due to the multi-stage telescopic mechanism, the lifting platform is far away from the upper part of the cutting part, which will not pose a threat to the safety of the operators and truly eliminates the hidden dangers of the anchoring workers.

[0083] 3. High degree of automation and energy saving

[0084] It can realize seamless conversion and continuous operation of the cutting, temporary support, and permanent anchoring processes: the multi-stage telescopic mechanism, the vertical support device, the top frame mechanism, and the lifting platform all share energy with the hydraulic system of the roadheader, rely on an adjustable flow dividing valve for flow division, and adopt a control method of separately controlling the left and right sides and the high and low directions, increasing the flexible applicability of this equipment.

[0085] 4. Effectively improve the anchor support speed

[0086] The operation console of this application uses hydraulic control to realize the omnidirectional adjustment of the lifting platform and the top frame mechanism, without manual operation, which not only reduces the safety accidents of the underground workers, but also shortens the adjustment time of the temporary support and the height lifting of the platform operation, improving the production efficiency. It greatly reduces the preparatory, auxiliary, and transitional processes and labor intensity.

[0087] 5. The support position can be adjusted

[0088] The present application also provides a top frame mechanism. The upper support roof plate is realized by the oil cylinders inside the left and right upper columns. By independently controlling the oil cylinders inside the left and right upper columns, the left and right tilting angles of ±25° can be achieved. The left and right upper columns and the top frame are connected through oval slots, pin shafts, and spherical hinges. The top frame can adapt to the angle of the roadway roof with a front and rear tilting angle of ±8°. The oval slots are used to compensate for the distance offset between the two columns when the top frame tilts left and right, so as to fit the change of the inclination angle of the roadway roof.

[0089] 6. Large support width

[0090] The structure of the present application is simple, and the work such as assembly and maintenance is easy. The top frame mechanism can be telescoped back and forth through the oil cylinders built in the square tubes, increasing the support area. Thus, the contact area between the roof and the coal seam is increased in all directions, realizing a large-area lifting effect and improving the operation safety and stability.

[0091] 7. Wide application range

[0092] Hydraulic, pneumatic, and waterway interfaces are installed on the platform or the two side columns, facilitating workers to use various hydraulic and pneumatic tools such as bolt machines, side machines, rock drills, power wrenches, cutters, and tension jacks. There is no need to pull pipes and wire, improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0093] Attached Figure 1 is a schematic diagram of the three-dimensional unfolded structure of the present invention; Figure 1 ;

[0094] Attached Figure 2 is a schematic diagram of the three-dimensional unfolded structure of the present invention; Figure 2 ;

[0095] Attached Figure 3 is a schematic top view structure diagram of the present invention;

[0096] Attached Figure 4 is a schematic diagram of the three-dimensional unfolded structure of the multi-stage telescopic mechanism of the present invention;

[0097] Attached Figure 5 is a schematic three-dimensional structure diagram of the adjustment device of the present invention; Figure 1 ;

[0098] Attached Figure 6 is a schematic three-dimensional structure diagram of the adjustment device of the present invention; Figure 2 ;

[0099] Attached Figure 7 is a schematic three-dimensional structure diagram of the left vertical support device of the present invention;

[0100] Attached Figure 8 is a schematic three-dimensional structure diagram of the lifting platform of the present invention;

[0101] Attached Figure 9 is a schematic three-dimensional structure diagram of the top frame mechanism of the present invention;

[0102] Appendix Figure 10 is the front view structural schematic diagram of the contraction state of the present invention;

[0103] Appendix Figure 11 is the three-dimensional structural schematic diagram of the contraction state of the present invention.

[0104] Among them, 1 is the multi-stage telescopic mechanism; 11 is the left telescopic mechanism; 111 is the left support leg; 112 is the left support frame; 1121 is the left slide rail; 113 is the left outer cylinder; 1131 is the inverted T-shaped slideway; 1132 is the left fixed cylinder; 114 is the left middle cylinder; 115 is the left inner cylinder; 116 is the left outer cylinder oil cylinder; 117 is the left middle cylinder oil cylinder; 118 is the left inner cylinder oil cylinder; 12 is the right telescopic mechanism; 2 is the vertical support device; 21 is the left vertical support device; 211 is the left column body; 212 is the upper left middle cylinder; 213 is the upper left support pillar; 214 is the lower left middle cylinder; 215 is the lower left support pillar; 216 is the left double-headed secondary oil cylinder; 217 is the left spherical joint bearing; 218 is the left pipe body; 22 is the right vertical support device; 23 is the left platform lifting oil cylinder; 24 is the left platform connecting plate; 25 is the right platform connecting plate; 3 is the top frame mechanism; 31 is the top frame body; 32 is the left top frame oil cylinder; 33 is the right top frame oil cylinder; 34 is the front extension frame; 35 is the rear extension frame; 36 is the horizontal long circular hole; 4 is the adjustment device; 41 is the left adjustment device; 4111 is the left back plate; 4112 is the upper hanging ear; 4113 is the lower hanging ear; 4114 is the left side plate; 4115 is the right side plate; 42 is the right adjustment device; 43 is the lower left guide seat; 44 is the left pin shaft; 45 is the left vertical shaft; 46 is the upper left guide seat; 5 is the lifting platform; 51 is the main platform; 52 is the folding platform; 531 is the left main side platform; 532 is the right main side platform; 541 is the left folding side platform; 542 is the right folding side platform; 55 is the left rotating oil cylinder; 56 is the right rotating oil cylinder; the operation console 6; the roadheader 7. Specific embodiments

[0105] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0106] It should be explained that the terms: "length", "width", "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0107] Such as Figures 1 - 11As shown in the figure, an on-board support platform system for a roadheader, characterized in that: it includes a roadheader 7, a multi-stage telescopic mechanism 1 fixedly connected to both sides of the crawler chassis of the roadheader 7 at one end, a vertical support device 2 connected to the other end of the multi-stage telescopic mechanism, a top frame mechanism 3 fixedly connected to the top of the vertical support device 2, a lifting platform 5 arranged below the top frame mechanism 3, and an operating platform 6 arranged inside the roadheader 7; the multi-stage telescopic mechanism 1 telescopes along the horizontal direction of the roadheader 7; an adjustment device 4 is arranged between the vertical support device 2 and the multi-stage telescopic mechanism 1; the adjustment device 4 can be adjusted along the width direction and height direction of the roadheader 7; the operating platform 6 provides hydraulic control for the multi-stage telescopic mechanism 1, the vertical support device 2, the top frame mechanism 3, and the lifting platform 5. The present invention uses a multi-stage telescopic mechanism connected to both sides of the crawler base of the roadheader, a vertical support device connected to the other end of the multi-stage telescopic mechanism, a top frame mechanism fixedly connected to the top of the vertical support device, a lifting platform arranged below the top frame mechanism and other mechanisms to perform telescopic adjustment in the length direction and height direction. A structure form that stands firm on both sides of the roadheader is formed to support the temporary support and the workers on the lifting platform, increasing the stability effect of the on-board support platform for the roadheader. Since the lifting platform breaks through the suspended structure mode of the existing products located above the cutting head of the roadheader, especially the safety of manual anchoring is greatly improved, and the requirement of the existing technology for the height of the roadway by the flipping structure is avoided, and it is applicable to various forms of roadway operations. A platform for workers' anchor support operations with adjustable height is provided, and double-column temporary support for ensuring the safe work of workers is provided.

[0108] The multi-stage telescopic mechanism 1 includes a left telescopic mechanism 11 arranged on the left side of the crawler chassis of the roadheader 7 and a right telescopic mechanism 12 arranged on the right side of the crawler chassis of the roadheader 7; the left telescopic mechanism includes a left support leg 111 fixedly connected to the left side of the crawler chassis of the roadheader 7, a left support frame 112 fixedly connected to the upper plane of the left support leg 111, a left outer cylinder 113 slidably connected to the upper plane of the left support frame 112, a left middle cylinder 114 penetrating through the inner side of the left outer cylinder 113, and a left inner cylinder 115 penetrating through the inner side of the left middle cylinder 114; a left outer cylinder oil cylinder 116 is rotatably connected to the rear end of the left support frame 112;

[0109] The free end of the left outer cylinder oil cylinder 116 is rotatably connected to the front lower end of the left outer cylinder 113; the front upper end of the left middle cylinder 114 is rotatably connected to a left middle cylinder oil cylinder 117; the rear upper end of the left outer cylinder 113 is rotatably connected to the free end of the left middle cylinder oil cylinder 117; the front upper end of the left outer cylinder 113 is rotatably connected to a left inner cylinder oil cylinder 118; the free end of the left inner cylinder oil cylinder 118 is rotatably connected to the adjusting device 4; a left slide rail 1121 is fixedly connected to the left support frame 112; the left slide rail 1121 is provided with an inverted T-shaped slide rail groove A; the left outer cylinder 113 includes an inverted T-shaped slideway 1131 adapted to the inverted T-shaped slide rail groove and a left fixed cylinder 1132 fixedly connected to the upper end of the inverted T-shaped slideway 1131. The left middle cylinder 114 slides within the left fixed cylinder 1132.

[0110] The right telescopic mechanism 12 includes a right support leg frame fixedly connected to the right side of the roadheader crawler chassis, a right support frame fixedly connected to the upper plane of the right support leg frame, a right outer cylinder slidably connected to the upper plane of the right support frame, a right middle cylinder penetrating through the inner side of the right outer cylinder, and a right inner cylinder penetrating through the inner side of the right middle cylinder; the rear end of the right support frame is rotatably connected to a right outer cylinder oil cylinder; the free end of the right outer cylinder oil cylinder is rotatably connected to the front lower end of the right outer cylinder; the front upper end of the right middle cylinder is rotatably connected to a right middle cylinder oil cylinder; the rear upper end of the right outer cylinder is rotatably connected to the free end of the right middle cylinder oil cylinder; the front upper end of the right outer cylinder is rotatably connected to a right inner cylinder oil cylinder; the free end of the right inner cylinder oil cylinder is rotatably connected to the adjusting device; a right slide rail is fixedly connected to the right support frame; the right slide rail is provided with an inverted T-shaped slide rail groove A; the right outer cylinder includes an inverted T-shaped slideway B adapted to the inverted T-shaped slide rail groove and a right fixed cylinder fixedly connected to the upper end of the inverted T-shaped slideway. The right middle cylinder slides within the right fixed cylinder.

[0111] The right telescopic mechanism 12 and the left telescopic mechanism 11 are symmetrically arranged on the left and right sides of the roadheader 7. In this embodiment, the left and right outer cylinder oil cylinders are first-stage oil cylinders, and the first-stage oil cylinders adopt a chute track type to increase the extension strength. The left and right middle cylinder oil cylinders and the left and right inner cylinder oil cylinders are respectively the second stage and the third stage, and are all sleeve types. The left and right outer cylinders, inner cylinders and middle cylinders all adopt square tube structures to increase the extension strength and stability. In this embodiment, the first-stage oil cylinders are of the built-in type, and the second-stage and third-stage oil cylinders are of the external type. In other embodiments, the second-stage and third-stage oil cylinders can be of the built-in type. It can reduce the influence of dust on the operation of the oil cylinders and extend the service life of the oil cylinders.

[0112] The adjustment device 4 includes a left adjustment device 41 and a right adjustment device 42; the left adjustment device 41 includes a left vertical adjustment seat 411 fixedly connected to the front end of the left inner cylinder 115, an upper left guide seat 46 arranged at the upper end of the left vertical adjustment seat 411, and a lower left guide seat 43 arranged at the lower end of the left vertical adjustment seat 411; the left vertical adjustment seat 411 includes a left back plate 4111, an upper hanging ear 4112 fixedly connected to the upper end of the left back plate 4111, a lower hanging ear 4113 fixedly connected to the lower end of the left back plate 4112, a left side plate 4114 fixedly connected to the left side of the left back plate 4111, and a right side plate 4115 fixedly connected to the right side of the left back plate 4111; a through high-low long slot adjustment hole C is provided from the left side plate 4114 to the right side plate 4115; a left pin shaft 44 is slidably connected in the high-low long slot adjustment hole C; the left pin shaft 43 is rotatably connected to the free end of the left inner cylinder oil cylinder 118; the left adjustment device 41 further includes a left vertical shaft 45 rotatably connected to the left vertical adjustment seat 411. An upper left horizontal long slot is provided on the upper left guide seat 46; a lower left horizontal long slot is provided on the lower left guide seat 43; the left vertical shaft 45 is slidably connected to both the upper left horizontal long slot and the lower left horizontal long slot; the upper left guide seat 46 and the lower left guide seat 43 are fixedly connected to the vertical support device 2; the right adjustment device 42 is symmetrically arranged with the left adjustment device 41 on the left and right sides of the roadheader 7. It includes a right vertical adjustment seat fixedly connected to the front end of the right inner cylinder, an upper right guide seat arranged at the upper end of the right vertical adjustment seat, and a lower right guide seat arranged at the lower end of the right vertical adjustment seat; the right vertical adjustment seat includes a right back plate, an upper hanging ear fixedly connected to the upper end of the right back plate, a lower hanging ear fixedly connected to the lower end of the right back plate, a right side plate fixedly connected to the right side of the right back plate, and a right side plate fixedly connected to the right side of the right back plate; a through high-low long slot adjustment hole is provided from the right side plate to the right side plate; a right pin shaft is slidably connected in the high-low long slot adjustment hole; the right pin shaft is rotatably connected to the free end of the right inner cylinder oil cylinder; the right adjustment device further includes a right vertical shaft rotatably connected to the right vertical adjustment seat. An upper right horizontal long slot is provided on the upper right guide seat; a lower right horizontal long slot is provided on the lower right guide seat; the right vertical shaft is slidably connected to both the upper right horizontal long slot and the lower right horizontal long slot; the upper right guide seat and the lower right guide seat are fixedly connected to the vertical support device;

[0113] The horizontal long slot holes on the upper left guide seat 46 and the lower left guide seat 43, and the horizontal long slot holes on the lower right guide seat and the upper right guide seat can be used to adjust the deviation between the entire system and the roadway and compensate for the inclination angle existing between the roadheader and the roadway.

[0114] In other embodiments, a round hole is provided on the upper right guide seat; a round hole with the same position and the same diameter as that on the upper right guide seat is provided on the lower right guide seat; the right vertical shaft is hinged to the round holes on the upper right guide seat and the lower right guide seat; the upper right guide seat and the lower right guide seat and the right pin shaft serve as the positioning ends in the width direction of the whole system. By only adjusting the left horizontal long slot hole, the structural error caused by stretching can be adjusted, and the jamming phenomenon caused by deformation of the system can be avoided.

[0115] The vertical support device 2 includes a left vertical support device 21 and a right vertical support device 22; the left vertical support device 21 includes a left column body 211, an upper left middle cylinder 212 sliding on the upper inner wall of the left column body 211, an upper left support column 213 sliding on the upper inner wall of the upper left middle cylinder 212, a lower left middle cylinder 214 sliding on the lower inner wall of the left column body 211, a lower left support column 215 slidably connected to the lower inner wall of the lower left middle cylinder 214, and a left double-headed secondary oil cylinder 216 fixedly connected to the middle of the left column body 211; the upper free end of the left double-headed secondary oil cylinder 216 is fixedly connected to the upper left column 213;

[0116] The lower free end of the left double-headed secondary oil cylinder 216 is fixedly connected to the lower left column 215; the upper left column 213 is provided with an upper left protruding screw; the upper left middle cylinder 212 is provided with an upper left long slot adapted to the upper left protruding screw; the lower left column 215 is provided with a lower left protruding screw; the lower left middle cylinder 214 is provided with a lower left long slot adapted to the lower left protruding screw; the right vertical support device includes a right column body, an upper right middle cylinder sliding on the upper inner wall of the right column body, an upper right support column sliding on the upper inner wall of the upper right middle cylinder, a lower right middle cylinder sliding on the lower inner wall of the right column body, a lower right support column slidably connected to the lower inner wall of the lower right middle cylinder, and a right double-headed secondary oil cylinder fixedly connected to the middle of the right column body; the right vertical support device 22 and the left vertical support device 21 are symmetrically arranged on both sides of the roadheader 7 left and right. The upper end of the upper left column 213 is fixedly connected with a left joint ball bearing 217; the left joint ball bearing 217 is rotationally connected with the top frame mechanism 3. The top frame can be adjusted ±8° forward and backward. In this application, left and right double-headed secondary oil cylinders are arranged inside the left and right column bodies respectively to push the upper left and right columns and the lower left and right columns; the lower left and right columns support the ground and play a role in stabilizing the mechanism; the upper left and right columns are connected to the temporary support frame body, support the roof of the roadway, and fix the whole mechanism, forming a sky-reaching and earth-standing type. The support effect is more firm, and the situation of large-area coal seam falling caused by suspension will not occur. Since the multi-stage telescopic mechanism moves the lifting platform away from the upper part of the cutting part below, it will not pose a threat to the safety of operators and truly eliminate the hidden dangers of the anchoring workers.

[0117] A left pipe body 218 is fixedly arranged on the side of the left vertical column body 211 close to the center of the roadheader 7; a left platform lifting oil cylinder 23 is arranged in the left pipe body 218; the free end of the left platform lifting oil cylinder 23 is hinged with a left platform connecting plate 24; a right pipe body is fixedly arranged on the side of the right vertical support device 22 close to the center of the roadheader 7; a right platform lifting oil cylinder is arranged in the right pipe body; the free end of the right platform lifting oil cylinder is hinged with a right platform connecting plate 25; the lifting platform 5 is fixedly connected to the left platform connecting plate 24 and the right platform connecting plate 25.

[0118] The lifting platform 5 includes a main platform 51, a folding platform 52 rotatably connected to the main platform 51, a left main side platform 531 slidably connected to the lower left of the main platform 51, a right main side platform 532 slidably connected to the lower right of the main platform 51, a left folding side platform 541 slidably connected to the lower left of the folding platform 52, and a right folding side platform 542 slidably connected to the lower right of the folding platform 52;

[0119] The lifting platform 5 further includes a left rotation oil cylinder 55 fixedly connected to the left platform connecting plate 24 and a right rotation oil cylinder 56 fixedly connected to the right platform connecting plate 25; the rotation output end of the left rotation oil cylinder 55 is fixedly connected to the left side of the folding platform 52; the rotation output end of the right rotation oil cylinder 56 is fixedly connected to the right side of the folding platform 52; the left side of the main platform 51 is vertically and fixedly connected to the left vertical column body 211; the right vertical support device 22 includes a right vertical column body; the right side of the main platform 51 is vertically and fixedly connected to the right vertical column body. Hydraulic, pneumatic, and waterway interfaces 58 are installed on the lifting platform 5 or on the left and right vertical columns on both sides, which is convenient for workers to use various hydraulic and pneumatic tools such as rock bolt machines, rib machines, rock drifters, power wrenches, cutters, and tensioning jacks, without the need for pipe pulling and wiring, improving work efficiency. A guardrail 57 and a buffer rubber pad 58 are also arranged on the outside of the lifting platform 5, and anti-slip patterns are provided on the surfaces of the main platform, folding and translating platforms, and side platforms. Manual plug-in guardrails are provided at the front and rear of the platform to protect personnel safety.

[0120] The lifting platform 5 adopts a front-back folding and left-right telescopic structure. During the bolting operation, the platform has a large area and high strength (the left and right telescoping parts are inside the platform, and the cross-sectional size of the platform is large, resulting in high strength). During the tunneling operation, when the platform is not needed, the bolting platform system can be retracted and folded onto the body of the roadheader, occupying a small space and not affecting the operation of the roadheader itself. The height of the lifting platform 5 can also be adjusted by the upper and lower left platform lifting cylinders and right platform lifting cylinders arranged inside the left and right columns, so as to find a suitable height for work. The platform adopts a front-back folding and left-right telescopic structure. During the bolting operation, the platform has a large area and high strength. The left and right telescoping parts are inside the platform, and the cross-sectional size of the platform is large, resulting in high strength. During the tunneling operation, when the platform is not needed, the bolting platform system can be retracted and folded onto the body of the roadheader, occupying a small space and not affecting the operation of the roadheader itself.

[0121] The top frame mechanism 3 includes a top frame body 31 fixedly connected to the upper ends of the left vertical support device 21 and the right vertical support device 22, a left top frame oil cylinder 32 fixedly connected to the left side of the top frame body 31, a right top frame oil cylinder 33 fixedly connected to the right side of the top frame body 31, a front extension frame 34 fixedly connected to the front movable end of the left top frame oil cylinder 32, and a rear extension frame 35 fixedly connected to the rear movable end of the left top frame oil cylinder 32;

[0122] The front movable end of the right top frame oil cylinder 33 is fixedly connected to the front extension frame 34; the rear movable end of the right top frame oil cylinder 33 is fixedly connected to the front extension frame 34; the top frame body 31 is a frame structure; the front extension frame 34 is slidably connected to the front end of the top frame body 31; the rear extension frame 35 is slidably connected to the rear end of the top frame body 31. Horizontal transverse oblong holes 36 are provided on both sides of the top frame body 31. Through the oblong grooves, pin shafts, and spherical hinges, the top frame can adapt to the angle of the roadway roof by ±8° front and back. The oblong grooves are used to compensate for the offset of the distance from the two columns when adjusting the left and right inclination of the top frame, so as to fit the change of the inclination angle of the roadway roof.

[0123] The bolting platform is basically an independent mechanism, which is installed on the crawler frames on both sides of the roadheader by relying on the left and right pushing main arms. The front ends of the left and right pushing main arms are installed with gantry frames, and the platform is installed on the gantry frames. When the roadheader is cutting, the left and right pushing main arms are retracted, and the gantry frame will be above the slewing platform, not affecting the cutting work of the roadheader. When bolting and drilling is required, the left and right pushing main arms push forward, driving the gantry frame to move forward to the front of the cutting head. After the temporary support is completed, the bolting machine starts to drill.

[0124] The installation and adjustment of the bolting platform mainly refer to the hydraulic pipelines. During installation, it is necessary to ensure that during the operation of the whole machine, the pipeline configuration is reasonable, the dragging speed is reliable, and no damage will be caused. After installation, it is necessary to operate in a full cycle several times. During the operation process, pay attention to whether the pipelines are hung or collided. If there is any hanging, collision or inappropriate length, the operation should be stopped immediately and the pipelines should be adjusted.

[0125] A construction method for an airborne support platform system for a tunnel boring machine.

[0126] Step 1: After the cutting part of the tunnel boring machine 7 is finished, the left vertical support device 21 and the right vertical support device 22 push the top frame mechanism 3 to move upward to a certain distance above the top of the tunnel boring machine 7, and the left platform lifting cylinder 23 and the right platform lifting cylinder push the lifting platform 5 to move upward to above the top of the tunnel boring machine 7;

[0127] Step 2: The multi-stage telescopic mechanism 1 pushes the front vertical support device 2, the top frame mechanism 3 and the lifting platform 5 to move toward the front of the tunnel boring machine 7 until they reach the working position and stop;

[0128] Step 3: The left top frame cylinder 32 pushes the front extension frame 34 to move toward the front end, and the right top frame cylinder 33 pushes the rear extension frame 35 to move toward the rear end until the top frame mechanism 3 is extended to the working state.

[0129] Step 4: The left double-headed secondary oil cylinder 216 and the right double-headed secondary oil cylinder continue to push the top frame mechanism 3 upward until the top frame mechanism 3 supports the laneway; the left double-headed secondary oil cylinder 216 and the right double-headed secondary oil cylinder move downward until the left lower column 215 and the right lower column contact the ground and then stop;

[0130] Step 5: The left rotating cylinder 55 and the right rotating cylinder 56 rotate the folding platform 52 to the same plane as the main platform 51 and stop; unfold the left main side platform 531, the right main side platform 532, the left folding side platform 541 and the right folding side platform 542;

[0131] Step 6: The staff stands on the lifting platform 5 to perform anchoring operations, and the left platform lifting cylinder 23 and the right platform lifting cylinder push the lifting platform 5 up and down according to different height operation requirements;

[0132] Step 7: After completing all the work in step 6, start the left rotating cylinder 55 and the right rotating cylinder 56 to rotate the folding platform 52 to the upper plane of the main platform 51, and retract the left main side platform 531, the right main side platform 532, the left folding side platform 541 and the right folding side platform 542; lower the lifting platform 5 and the top frame mechanism 3 to the same height as in step 1; retract the multi-stage telescopic mechanism 1 to both sides of the crawler base of the tunnel boring machine 7; and then retract the lifting platform 5 and the top frame mechanism 3 to a fully retracted state;

[0133] Step 8: Start the tunnel boring machine 7 to dig forward.

[0134] The above-described embodiments are only the preferred embodiments of the present invention and not an exhaustive list of the feasible embodiments of the present invention. For those of ordinary skill in the art, any obvious changes made without departing from the principle and spirit of the present invention should be considered to be included within the scope of protection of the claims of the present invention.

Claims

1. An on-board support platform system for a roadheader, characterized in that: It includes a roadheader (7), a multi-stage telescopic mechanism (1) fixedly connected to both sides of the crawler chassis of the roadheader (7) at one end, a vertical support device (2) connected to the other end of the multi-stage telescopic mechanism, a top frame mechanism (3) fixedly connected to the top of the vertical support device (2), a lifting platform (5) arranged below the top frame mechanism (3), and an operating platform (6) arranged in the roadheader (7); The multi-stage telescopic mechanism (1) telescopes in the horizontal direction of the roadheader (7); An adjustment device (4) is arranged between the vertical support device (2) and the multi-stage telescopic mechanism (1); The adjustment device (4) can be adjusted in the width direction and height direction of the roadheader (7); The operating platform (6) provides hydraulic control for the multi-stage telescopic mechanism (1), the vertical support device (2), the top frame mechanism (3), and the lifting platform (5); The vertical support device (2) includes a left vertical support device (21) and a right vertical support device (22); the left vertical support device (21) includes a left column body (211), an upper left middle cylinder (212) sliding on the inner wall at the upper end of the left column body (211), an upper left support column (213) sliding on the inner wall at the upper end of the upper left middle cylinder (212), a lower left middle cylinder (214) sliding on the inner wall at the lower end of the left column body (211), a lower left support column (215) slidably connected to the inner wall at the lower end of the lower left middle cylinder (214), and a left double-headed secondary oil cylinder (216) fixedly connected to the middle of the left column body (211); The right vertical support device includes a right column body, an upper right middle cylinder sliding on the inner wall at the upper end of the right column body, an upper right support column sliding on the inner wall at the upper end of the upper right middle cylinder, a lower right middle cylinder sliding on the inner wall at the lower end of the right column body, a lower right support column slidably connected to the inner wall at the lower end of the lower right middle cylinder, and a right double-headed secondary oil cylinder fixedly connected to the middle of the right column body; A right tube body is fixedly arranged on the side of the right vertical support device (22) close to the center of the roadheader (7); a right platform lifting oil cylinder is arranged in the right tube body; A left tube body (218) is fixedly arranged on the side of the left column body (211) close to the center of the roadheader (7); a left platform lifting oil cylinder (23) is arranged in the left tube body (218); The top frame mechanism (3) includes a top frame body (31) fixedly connected to the upper ends of the left vertical support device (21) and the right vertical support device (22), a left top frame oil cylinder (32) fixedly connected to the left side of the top frame body (31), a right top frame oil cylinder (33) fixedly connected to the right side of the top frame body (31), a front extension frame (34) fixedly connected to the front movable end of the left top frame oil cylinder (32), and a rear extension frame (35) fixedly connected to the rear movable end of the right top frame oil cylinder (33); The lifting platform (5) comprises a main platform (51), a folding platform (52) rotatably connected to the main platform (51), a left main side platform (531) slidably connected to the lower left of the main platform (51), a right main side platform (532) slidably connected to the lower right of the main platform (51), a left folding side platform (541) slidably connected to the lower left of the folding platform (52), and a right folding side platform (542) slidably connected to the lower right of the folding platform (52); The lifting platform (5) further comprises a left rotating oil cylinder (55) fixedly connected to the left platform connecting plate (24) and a right rotating oil cylinder (56) fixedly connected to the right platform connecting plate (25); The construction method of the roadheader airborne support platform system comprises the following steps: Step 1: After the cutting part of the tunnel boring machine (7) has completed its operation, the left vertical support device (21) and the right vertical support device (22) push the top frame mechanism (3) to move upward to a certain distance above the top of the tunnel boring machine (7), and the left platform lifting cylinder (23) and the right platform lifting cylinder push the lifting platform (5) to move upward to above the top of the tunnel boring machine (7); Step 2: The multi-stage telescopic mechanism (1) pushes the front vertical support device (2), the top frame mechanism (3) and the lifting platform (5) to move toward the front of the tunnel boring machine (7) until they reach the working position and stop; Step 3: The left top frame oil cylinder (32) pushes the front extension frame (34) to move toward the front end, and the right top frame oil cylinder (33) pushes the rear extension frame (35) to move toward the rear end, until the top frame mechanism (3) is extended to the working state; Step 4: The left double-headed secondary oil cylinder (216) and the right double-headed secondary oil cylinder continue to push the top frame mechanism (3) upward until the top frame mechanism (3) supports the roadway; the left double-headed secondary oil cylinder (216) and the right double-headed secondary oil cylinder move downward until the left lower column (215) and the right lower column contact the ground and then stop; Step 5: The left rotating cylinder (55) and the right rotating cylinder (56) rotate the folding platform (52) to the same plane as the main platform (51) and stop; the left main side platform (531), the right main side platform (532), the left folding side platform (541) and the right folding side platform (542) are unfolded; Step 6: The worker stands on the lifting platform (5) to perform anchoring operations, and the left platform lifting cylinder (23) and the right platform lifting cylinder push the lifting platform (5) up and down according to different height operation requirements; Step 7: After completing all the work in step 6, start the left rotating cylinder (55) and the right rotating cylinder (56) to rotate the folding platform (52) to the upper plane of the main platform (51), and retract the left main side platform (531), the right main side platform (532), the left folding side platform (541) and the right folding side platform (542); lower the lifting platform (5) and the top frame mechanism (3) to the same height as step 1; retract the multi-stage telescopic mechanism (1) to both sides of the crawler base of the tunnel boring machine (7); and then retract the lifting platform (5) and the top frame mechanism (3) to a fully retracted state; Step 8: Start the roadheader (7) and carry out roadheading work forward.

2. The airborne support platform system for a roadheader according to claim 1, wherein: The multi-stage telescopic mechanism (1) includes a left telescopic mechanism (11) arranged on the left side of the crawler chassis of the roadheader (7) and a right telescopic mechanism (12) arranged on the right side of the crawler chassis of the roadheader (7); The left telescopic mechanism includes a left support leg (111) fixedly connected to the left side of the crawler chassis of the roadheader (7), a left support frame (112) fixedly connected to the upper plane of the left support leg (111), a left outer cylinder (113) slidably connected to the upper plane of the left support frame (112), a left middle cylinder (114) penetrating through the inner side of the left outer cylinder (113), and a left inner cylinder (115) penetrating through the inner side of the left middle cylinder (114); A left outer cylinder oil cylinder (116) is rotatably connected to the rear end of the left support frame (112); The free end of the left outer cylinder oil cylinder (116) is rotatably connected to the front lower end of the left outer cylinder (113); A left middle cylinder oil cylinder (117) is rotatably connected to the front upper end of the left middle cylinder (114); The rear upper end of the left outer cylinder (113) is rotatably connected to the free end of the left middle cylinder oil cylinder (117); A left inner cylinder oil cylinder (118) is rotatably connected to the front upper end of the left outer cylinder (113); the free end of the left inner cylinder oil cylinder (118) is rotatably connected to the adjusting device (4); The right telescopic mechanism (12) is symmetrically arranged with the left telescopic mechanism (11) on the left and right sides of the roadheader (7).

3. The airborne support platform system for a roadheader according to claim 2, wherein: A left slide rail (1121) is fixedly connected to the left support frame (112); the left slide rail (1121) is provided with an inverted T-shaped slide rail groove A; The left outer cylinder (113) includes an inverted T-shaped slideway (1131) adapted to the inverted T-shaped slide rail groove and a left fixed cylinder (1132) fixedly connected to the upper end of the inverted T-shaped slideway (1131); the left middle cylinder (114) slides within the left fixed cylinder (1132).

4. The airborne support platform system for a roadheader according to claim 2, wherein: The adjusting device (4) includes a left adjusting device (41) and a right adjusting device (42); The left adjusting device (41) includes a left vertical adjusting seat fixedly connected to the front end of the left inner cylinder (115), an upper left guiding seat (46) arranged at the upper end of the left vertical adjusting seat, and a lower left guiding seat (43) arranged at the lower end of the left vertical adjusting seat; The left vertical adjusting seat includes a left back plate (4111), an upper lifting ear (4112) fixedly connected to the upper end of the left back plate (4111), a lower lifting ear (4113) fixedly connected to the lower end of the left back plate (4111), a left side plate (4114) fixedly connected to the left side of the left back plate (4111), and a right side plate (4115) fixedly connected to the right side of the left back plate (4111); A through high-low long slot adjustment hole C is provided from the left side plate (4114) to the right side plate (4115). A left pin shaft (44) is slidably connected in the high-low long slot adjustment hole C. The left pin shaft (44) is rotatably connected to the free end of the left inner cylinder oil cylinder (118). The left adjustment device (41) further includes a left vertical shaft (45) rotatably connected to the left vertical adjustment seat. A left upper horizontal long slot is provided on the left upper guide seat (46). A left lower horizontal long slot is provided on the left lower guide seat (43). The left vertical shaft (45) is slidably connected to both the left upper horizontal long slot and the left lower horizontal long slot. The left upper guide seat (46) and the left lower guide seat (43) are fixedly connected to the vertical support device (2). The right adjustment device (42) is symmetrically arranged with the left adjustment device (41) on both sides of the roadheader (7).

5. The on-vehicle support platform system for a roadheader according to claim 4, wherein: The upper free end of the left double-headed secondary oil cylinder (216) is fixedly connected to the left upper column (213). The lower free end of the left double-headed secondary oil cylinder (216) is fixedly connected to the left lower column (215). The left upper column (213) is provided with a left upper protruding screw; the left upper middle cylinder (212) is provided with a left upper long slot adapted to the left upper protruding screw. The left lower column (215) is provided with a left lower protruding screw; the left lower middle cylinder (214) is provided with a left lower long slot adapted to the left lower protruding screw. The right vertical support device (22) is symmetrically arranged with the left vertical support device (21) on both sides of the roadheader (7).

6. The on-vehicle support platform system for a roadheader according to claim 5, wherein: The upper end of the left upper column (213) is fixedly connected with a left spherical joint bearing (217); the left spherical joint bearing (217) is rotatably connected to the top frame mechanism (3).

7. The on-vehicle support platform system for a roadheader according to claim 6, wherein: The free end of the left platform lifting oil cylinder (23) is hinged with a left platform connecting plate (24). The free end of the right platform lifting oil cylinder is hinged with a right platform connecting plate (25). The lifting platform (5) is fixedly connected to the left platform connecting plate (24) and the right platform connecting plate (25).

8. The on-vehicle support platform system for a roadheader according to claim 7, wherein: The rotary output end of the left rotary oil cylinder (55) is fixedly connected to the left side of the folding platform (52). The rotary output end of the right rotary oil cylinder (56) is fixedly connected to the right side of the folding platform (52). The left side of the main platform (51) is vertically fixedly connected to the left column body (211). The right vertical support device (22) includes a right column body. The right side of the main platform (51) is vertically fixedly connected to the right column body.

9. The on-vehicle support platform system for a roadheader according to claim 8, wherein: The front movable end of the left roof support oil cylinder (32) is fixedly connected to the front extension frame (34); The rear movable end of the right roof support oil cylinder (33) is fixedly connected to the rear extension frame (35); The roof support body (31) is of a frame structure; The front extension frame (34) is slidably connected to the front end of the roof support body (31); The rear extension frame (35) is slidably connected to the rear end of the roof support body (31).

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