A hydraulic lifting platform for tunnel drilling rigs in coal mines

Abstract

The present invention relates to the field of lifting platforms, and in particular to a hydraulic lifting platform for a tunnel drilling rig for a coal mine. Since the drilling rig itself vibrates during use and has a certain weight, if the hydraulic lifting platform rises to a certain height and is not locked, the hydraulic lifting platform will slide downward, which will have a great impact on the stability of the lifting platform, thereby affecting the stability and operation accuracy of the drilling rig. In severe cases, it will cause damage to the drilling rig and endanger the safety of personnel. It includes a fixed platform, positioning mechanisms are arranged on both sides of the fixed platform, a fixing mechanism is arranged on the lower side of the fixed platform, a locking mechanism is arranged on one side of the fixing mechanism, supporting mechanisms are arranged on both sides of the fixing mechanism, a horizontal mechanism is arranged on the lower side of the supporting mechanism, and the fixing mechanism includes a connecting seat. By setting the fixing mechanism and the locking mechanism, the drilling rig can be quickly fixed on the lifting platform, the operation steps are simplified, and the drilling rig can be effectively prevented from being displaced due to vibration.

Description

Technical Field

[0001] The invention relates to the field of lifting platforms, and in particular to a hydraulic lifting platform for a tunnel drill used in coal mines. Background Art

[0002] In China, coal resources are mainly distributed in many provinces and regions, such as Shanxi, Inner Mongolia, Shaanxi, Xinjiang, etc. These regions are rich in coal resources and are important coal production and supply bases in my country. With the advancement of science and technology and the development of intelligent technology, improving coal mining efficiency, reducing mining costs, and reducing safety hazards are important development trends in the coal mining industry in the future. When the coal seam is far from the surface, it is generally chosen to dig tunnels underground to mine coal, which is an underground coal mine. The mining of underground coal mines requires complex tunnel systems and mining equipment, and the working conditions are relatively difficult.

[0003] In order to adapt to the needs of different works, improve drilling efficiency and quality, ensure drilling safety and maintain equipment stability, it is necessary to adjust the height of the drilling rig. In the prior art, square wood and steel are mostly used to support the drilling rig, and the support is unstable. When adjusting the height of the drilling rig, the steps are complicated and inconvenient to operate, and it is not easy to move. After the drilling rig is lifted to a certain height, since the drilling rig itself vibrates during use and has a certain weight, if the hydraulic lifting platform rises to a certain height and is not locked, the hydraulic lifting platform will slide downward, which will have a great impact on the stability of the lifting platform, thereby affecting the stability and operation accuracy of the drilling rig, and in severe cases, it will cause damage to the drilling rig and endanger the safety of personnel. Summary of the invention

[0004] In order to overcome the disadvantage that after the drilling rig is lifted to a certain height, the drilling rig itself vibrates during use and has a certain weight. If the hydraulic lifting platform is not locked after rising to a certain height, the hydraulic lifting platform will slide downward, which will have a great impact on the stability of the lifting platform, thereby affecting the stability and operation accuracy of the drilling rig, and in severe cases causing damage to the drilling rig and endangering the safety of personnel, the technical problem to be solved by the present invention is to provide a hydraulic lifting platform for a tunnel drilling rig in a coal mine.

[0005] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod has a round shank to contact with said linking rod.

[0006] Preferably, the fixing mechanism also includes two connecting blocks, the connecting block is fixedly connected to the lower surface of the fixed platform, the connecting block is slidably connected to the driving shaft, one end of the driving shaft is fixedly connected to a fixed handle, the outer side of the driving shaft is fixedly connected to a driving gear, one side of the driving gear is provided with a driven gear, the driving gear is meshingly connected to the driven gear, the middle part of the driven gear is fixedly connected to a driven shaft, the driven shaft is rotatably connected to the other connecting block, and the end of the driven shaft passing through the connecting block is fixedly connected to a plurality of teeth.

[0007] Preferably, the locking mechanism includes an axial seat, two axial seats are fixedly connected to the side of the connecting block, each of the axial seats is rotatably connected to a prying rod via a rotating shaft, one end of the prying rod is rotatably connected to a locking block via a rotating shaft, one side of the locking block is provided with an arc surface, the arc surface is provided with tooth grooves matching the teeth on the driven shaft, the other ends of the two prying rods are fixedly connected with tension springs on both sides via fixing blocks, the side of the connecting block is rotatably connected to a locking handle, and the outer side of the end of the locking handle is fixedly connected to a protrusion.

[0008] Preferably, two positioning blocks are fixedly connected to both side surfaces of the fixed platform, a plurality of teeth are fixedly connected to both sides of the positioning blocks, and a guide plate is slidably connected to the outer side of the positioning blocks.

[0009] Preferably, the positioning mechanism includes a positioning shaft, the positioning shaft is rotatably connected to the guide plate, a toggle gear is fixedly connected to the outer side of the positioning shaft, two toggle racks are arranged on both sides of the toggle gear, the toggle gear is meshingly connected to the toggle rack, a positioning bar is fixedly connected to each of the two ends of the toggle rack, the opposite sides of the two positioning bars are provided with tooth grooves matching the teeth of the positioning block, and the sides of the two toggle gears are rotated with connecting rods through rotating shafts.

[0010] The cam is connected with the outer cover of the sliding panel and the outer cover is fixedly provided with a toothed plate, and the toothed plate is connected with the toothed plate by the toothed plate, and the toothed plate is connected with the toothed plate through the toothed plate.

[0011] Preferably, the lower surface of the guide plate is fixedly connected to a base, and the lower surface of the base is rotatably connected to four universal wheels.

[0012] Preferably, the horizontal mechanism includes a fixed sleeve, which is fixedly connected to the lower surface of the base, and two sliding shafts are slidably connected in the fixed sleeve, one end of the sliding shaft is fixedly connected to a synchronization rack, a synchronization gear is arranged between the two synchronization racks, the two synchronization racks are meshed and connected with the synchronization gear, and the synchronization gear is rotatably connected to the fixed sleeve through a rotating shaft, the other end of the sliding shaft is connected to an adjusting shaft through a thread, one end of the adjusting shaft is fixedly connected to a pad, and the other end of the adjusting shaft is fixedly connected to a locking nut.

[0013] Preferably, the supporting mechanism includes an upper sliding sleeve, which is fixedly connected to the lower surface of the fixed platform, a support arm is slidably connected inside the upper sliding sleeve, the two support arms are rotatably connected via a rotating shaft, the other end of the support arm is slidably connected to a lower sliding sleeve, and the lower sliding sleeve is fixedly connected to the upper surface of the base.

[0014] Preferably, a hydraulic telescopic rod is fixedly connected to the upper surface of the base, and an output end of the hydraulic telescopic rod is fixedly connected to the lower surface of the fixed platform.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting up a fixing mechanism and a locking mechanism, the drilling rig can be quickly fixed on the lifting platform, which simplifies the operation steps and can effectively prevent the drilling rig from changing position due to vibration, causing the center of gravity of the lifting platform to shift and overturn; by setting up a positioning mechanism, the fixed platform can be locked and positioned after the lifting platform reaches the specified height to prevent the fixed platform from sliding down, causing equipment damage and personnel injury, and ensuring the safety of equipment and personnel; by setting up a horizontal mechanism, the lifting platform can be adjusted to a horizontal plane, and the force support can be increased to prevent the lifting platform from overturning and ensure the smooth operation of the equipment;

[0017] 2. By setting up hydraulic telescopic rods and supporting mechanisms, the lifting platform can be balanced and stable when rising, and it is easy to operate and adjust, which improves work efficiency and reduces the work intensity of workers; by setting universal wheels, the lifting platform can be easily moved, increasing the convenience of the lifting platform, and the position can be adjusted at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the fixing mechanism structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the locking mechanism structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the positioning mechanism structure of the present invention;

[0023] Figure 6 It is a schematic diagram of the positioning block structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the positioning shaft structure of the present invention;

[0025] Figure 8 It is a schematic diagram of the ratchet structure of the present invention;

[0026] Fig. 9 It is a schematic diagram of the horizontal mechanism structure of the present invention;

[0027] Fig.10 It is a schematic diagram of the support mechanism structure of the present invention.

[0028] The markings in the accompanying drawings are: 1-base, 2-support mechanism, 201-upper sliding sleeve, 202-support arm, 203-lower sliding sleeve, 3-hydraulic telescopic rod, 4-horizontal mechanism, 401-fixed sleeve, 402-sliding shaft, 403-synchronous rack, 404-synchronous gear, 405-locking nut, 406-adjusting shaft, 407-pad, 5-universal wheel, 6-fixed platform, 601-positioning block, 602-slide groove, 7-guide plate, 8-fixed mechanism, 801-clamping block, 802-synchronous rod, 803-synchronous belt, 804-first pulley, 805-connecting seat, 806-second pulley, 807-driving shaft, 808-driving Gear, 809-connecting block, 810-fixed handle, 811-driven gear, 812-driven shaft, 9-positioning mechanism, 901-positioning bar, 902-sliding rack, 903-sliding gear, 904-connecting rod, 905-positioning shaft, 906-positioning handle, 907-positioning plate, 908-housing, 909-unlocking rod, 910-locking rod, 911-pushing rod, 912-ratchet, 913-reset spring, 914-compression spring, 915-locking block, 10-locking mechanism, 1001-locking handle, 1002-bump, 1003-tension spring, 1004-prying rod, 1005-axis seat, 1006-locking block. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] Embodiment 1: A hydraulic lifting platform for a tunnel drill for a coal mine, such as Figure 1-Figure 3As shown in the figure, it includes a fixed platform 6. Positioning mechanisms 9 are arranged on both sides of the fixed platform 6. The fixed platform 6 is locked by the positioning mechanisms 9 to prevent it from sliding down. A fixing mechanism 8 is arranged on the lower side of the fixed platform 6. The drilling rig is fixed at a specified position by the fixing mechanism 8. A locking mechanism 10 is arranged on one side of the fixing mechanism 8. The fixing mechanism 8 is locked by the locking mechanism 10 to prevent it from loosening and causing the position of the drilling rig to change. Support mechanisms 2 are arranged on both sides of the fixing mechanism 8. The support mechanisms 2 assist the fixed platform 6 to rise and fall to ensure the stability of the lifting platform. A horizontal mechanism 4 is arranged on the lower side of the support mechanism 2. Through the horizontal mechanism 4, the force-bearing area and the support width are increased to prevent the lifting platform from tipping over. The fixing mechanism 8 includes four connecting seats 805. The connecting seats 805 are fixedly connected to the lower surface of the fixed platform 6. One of the connecting seats 805 is rotatably connected to a first pulley 804 through a rotating shaft. The middle part of another connecting seat 805 is rotatably connected to a driving shaft 807. A second pulley 806 is fixedly connected to the outside of the driving shaft 807. A synchronous belt 803 is sleeved on the first pulley 804 and the second pulley 806. One side of the synchronous belt 803 is fixedly connected to a synchronous rod 802. A clamping block 801 is fixedly connected to the upper surface of the synchronous rod 802. The upper part of the clamping block 801 is in a U shape, and the lower part of the clamping block 801 is in an I shape. Two sliding grooves 602 are formed in the fixed platform 6. The clamping block 801 is slidably connected in the sliding grooves 602 of the fixed platform 6. A connecting block 809 is fixedly connected to the lower surface of the fixed platform 6. The connecting block 809 is rotatably connected to the driving shaft 807. A fixing handle 810 is fixedly connected to one end of the driving shaft 807. A driving gear 808 is fixedly connected to the outside of the driving shaft 807. A driven gear 811 is arranged on one side of the driving gear 808. The driving gear 808 is meshed with the driven gear 811. A driven shaft 812 is fixedly connected to the middle part of the driven gear 811. A first pulley 804 is fixedly connected to the end of the driven shaft 812. The first pulley 804 is rotatably connected inside the connecting seat 805. The driven shaft 812 is rotatably connected to another connecting block 809. A plurality of teeth are fixedly connected to the end of the driven shaft 812 passing through the connecting block 809. The cross section of the teeth is triangular.

[0031] As Figure 4 shown, the locking mechanism 10 includes an axis seat 1005. The axis seat 1005 is fixedly connected to the connecting block 809. The axis seat 1005 is rotatably connected to a prying rod 1004 through a rotating shaft. One end of the prying rod 1004 is rotatably connected to a locking block 1006 through a rotating shaft. An arc surface is formed on one side of the locking block 1006. A tooth groove matching with the teeth on the driven shaft 812 is formed on the arc surface. The other ends of the two prying rods 1004 are fixedly connected with a tension spring 1003 through fixing blocks on both sides. A locking handle 1001 is rotatably connected to the side surface of the connecting block 809. A convex block 1002 is fixedly connected to the outside of the locking handle 1001. The convex block 1002 is oval.

[0032] like Figure 2 , Figure 6 As shown, two positioning blocks 601 are fixedly connected to each of the two side surfaces of the fixed platform 6. The positioning blocks 601 are T-shaped. A plurality of teeth are fixedly connected to both sides of the positioning blocks 601. The teeth are triangular in shape. A guide plate 7 is slidably connected to the outer side of the positioning blocks 601.

[0033] like Figure 5-Figure 8 As shown, the positioning mechanism 9 is located inside the guide plate 7, and the positioning mechanism 9 includes a positioning shaft 905, which is rotatably connected to the guide plate 7, and a toggle gear 903 is fixedly connected to the outer side of the positioning shaft 905. Two toggle racks 902 are arranged on both sides of the toggle gear 903, and the toggle gear 903 is meshed and connected with the toggle rack 902. A positioning bar 901 is fixedly connected to each of the two ends of the toggle rack 902, and the opposite sides of the two positioning bars 901 are provided with tooth grooves that match the teeth of the positioning block 601. The side of the movable gear 903 is connected with a connecting rod 904 through a rotating shaft, and the other end of the connecting rod 904 is also connected to the toggle gear 903 through the rotating shaft. The upper and lower sides of the toggle gear 903 are also meshed and connected with the toggle rack 902. The two ends of the toggle rack 902 are also fixedly connected to the positioning bar 901. The stability of the locking is increased by the setting of this mechanism. The outer side of the positioning shaft 905 is slidably connected with a housing 908, and the housing 908 is fixedly connected to the guide plate 7. The outer side of the positioning shaft 905 is slidably connected with a positioning plate 907. The positioning plate 907 is slidably connected to the housing 908 through a rotating shaft, a return spring 913 is fixedly connected between the positioning plate 907 and the housing 908, and the return spring 913 is sleeved on the outside of the rotating shaft, an unlocking rod 909 is fixedly connected to the side of the positioning plate 907, and the other end of the unlocking rod 909 is provided with an inclined surface, and locking rods 910 are slidably connected to both sides of the housing 908, and a square through hole is provided on the locking rod 910 and located on the outside of the housing 908, and the locking rod 910 passes through the housing 908 and extends to the end of the housing 908. A locking block 915 is fixedly connected, and the locking block 915 is triangular. A compression spring 914 is fixedly connected between the locking block 915 and the inner side of the outer shell 908, and the compression spring 914 is sleeved on the outside of the locking rod 910. A ratchet 912 is fixedly connected to the outside of the positioning shaft 905, and an inclined surface matching the ratchet 912 is provided at the end of the locking block 915. A cross-shaped through hole is provided at the other end of the positioning shaft 905, and a positioning handle 906 is slidably connected in the cross-shaped through hole, and a push rod 911 is fixedly connected to one side of the positioning handle 906.

[0034] like Figure 1 As shown, the lower surface of the guide plate 7 is fixedly connected to the base 1, and the lower surface of the base 1 is rotatably connected to four universal wheels 5.

[0035] like Fig. 9As shown, the horizontal mechanism 4 includes a fixed sleeve 401, which is fixedly connected to the lower surface of the base 1, and two sliding shafts 402 are slidably connected in the fixed sleeve 401. The sliding shaft 402 is square, and one end of the sliding shaft 402 is fixedly connected to a synchronous rack 403, and a synchronous gear 404 is arranged between the two synchronous racks 403. The two synchronous racks 403 are meshed and connected with the synchronous gear 404, and the synchronous gear 404 is rotatably connected to the fixed sleeve 401 through a rotating shaft, and the other end of the sliding shaft 402 is connected to an adjusting shaft 406 through a thread, and one end of the adjusting shaft 406 is fixedly connected to a pad 407, and the other end of the adjusting shaft 406 is fixedly connected to a locking nut 405.

[0036] like Fig.10 As shown, the support mechanism 2 includes an upper sliding sleeve 201, which is fixedly connected to the lower surface of the fixed platform 6. A support arm 202 is slidably connected inside the upper sliding sleeve 201. The two support arms 202 are rotatably connected through a rotating shaft. The other end of the support arm 202 is slidably connected to a lower sliding sleeve 203, and the lower sliding sleeve 203 is fixedly connected to the upper surface of the base 1.

[0037] like Figure 1 As shown, a hydraulic telescopic rod 3 is fixedly connected to the upper surface of the base 1 . The hydraulic telescopic rod 3 is three-stage telescopic and has smoother movement. The output end of the hydraulic telescopic rod 3 is fixedly connected to the lower surface of the fixed platform 6 .

[0038] Working principle: When the lifting platform is used, first push the lifting platform to the specified position, use the horizontal mechanism 4 to adjust the fixed platform 6 to a horizontal position, hoist the drilling rig onto the fixed platform 6, use the fixing mechanism 8 to fix the drilling rig, use the locking mechanism 10 to lock the fixing mechanism 8 to prevent the drilling rig from moving, start the hydraulic telescopic rod 3, the output end of the hydraulic telescopic rod 3 pushes the fixed platform 6 to move upward, the upward movement of the fixed platform 6 drives the support mechanism 2 to shrink and slide, the upward movement of the fixed platform 6 pulls the two support arms 202 to slide inward, and the downward movement of the fixed platform 6 pushes the two support arms 20 2 slides outward, when the fixed platform 6 rises to the specified position, the hydraulic telescopic rod 3 is closed, and the fixed platform 6 is locked by the positioning mechanism 9 to prevent it from sliding down. At this time, the drilling rig can be operated to start working. When it is necessary to adjust the height of the fixed platform 6, the positioning mechanism 9 is unlocked first, and then the hydraulic telescopic rod 3 is started. When the fixed platform 6 is adjusted to the specified position, the hydraulic telescopic rod 3 is closed, and the positioning mechanism 9 is locked. At this time, the drilling rig can be operated to continue working. When it is necessary to replace the drilling rig, the locking mechanism 10 is unlocked, and the fixing mechanism 8 is separated from the drilling rig. At this time, the drilling rig can be replaced.

[0039] When the fixed platform 6 is adjusted to be horizontal using the horizontal mechanism 4, the sliding shaft 402 is pulled outward, and the sliding shaft 402 slides outward to drive the synchronous rack 403 to slide outward, and the synchronous rack 403 slides outward to drive the synchronous gear 404 to rotate, and the synchronous gear 404 rotates to drive another synchronous rack 403 to slide outward, and the other synchronous rack 403 slides outward to push the other sliding shaft 402 to slide outward. After the sliding shaft 402 is pulled to the specified position, the locking nut 405 is turned, and the locking nut 405 pushes the adjusting shaft 406 to move downward, and the adjusting shaft 406 moves downward to push the pad 407 to contact the ground. The fixed platform 6 is adjusted to be horizontal by rotating the adjusting nut. When the lifting platform needs to move, the locking nut 405 is rotated in the opposite direction. The locking nut 405 pulls the adjusting shaft 406 to move upward. The adjusting shaft 406 moves upward and pulls the pad 407 out of contact with the ground, pushing the sliding shaft 402 to slide inward. The sliding shaft 402 slides inward and pushes the synchronous rack 403 to slide inward. The sliding of the synchronous rack 403 inward drives the synchronous gear 404 to rotate. The rotation of the synchronous gear 404 pulls the other synchronous rack 403 to slide inward. At this time, the two sliding shafts 402 are reset, and the position of the lifting platform can be moved.

[0040] When the drilling rig is fixed by the fixing mechanism 8, the drilling rig is first hoisted onto the fixed platform 6, and then the fixing handle 810 is rotated. The fixing handle 810 rotates to drive the driving shaft 807 to rotate, and the driving shaft 807 rotates to drive the driving gear 808 to rotate. The driving shaft 807 rotates to drive the second pulley 806 to rotate. Under the action of the synchronous belt 803, the second pulley 806 rotates to drive the first pulley 804 to rotate. The synchronous belt 803 pushes the synchronous rod 802 to move inward. The synchronous rod 802 moves inward to push the clamping block 801 to move inward, and the driving gear 808 and the driven gear 811 are meshed and connected, the driving gear 808 rotates to drive the driven gear 811 to rotate, the driven gear 811 rotates to drive the driven shaft 812 to rotate, the driven shaft 812 rotates to drive the second pulley 806 on the other side to rotate, under the action of the synchronous belt 803 on the other side, the second pulley 806 on the other side rotates to drive the first pulley 804 on the other side to rotate, the synchronous belt 803 on the other side pushes the synchronous rod 802 on the other side to move inward, the synchronous rod 802 on the other side moves inward and pushes the clamping block 801 on the other side to move inward, at this time the drilling rig is fixed at the specified position.

[0041] When the fixing mechanism 8 is separated from the drilling rig, the fixing handle 810 is rotated in the opposite direction, and the fixing handle 810 rotates in the opposite direction to drive the driving shaft 807 to rotate in the opposite direction, and the driving shaft 807 rotates in the opposite direction to drive the driving gear 808 to rotate in the opposite direction, and the driving shaft 807 rotates in the opposite direction to drive the second pulley 806 to rotate in the opposite direction. Under the action of the synchronous belt 803, the second pulley 806 rotates in the opposite direction to drive the first pulley 804 to rotate in the opposite direction, and the synchronous belt 803 pulls the synchronous rod 802 to move outward, and the synchronous rod 802 moves outward to push the clamping block 801 to move outward, and the driving gear 808 is meshed and connected with the driven gear 811. The driving gear 808 rotates in the opposite direction, driving the driven gear 811 rotates in the opposite direction, driving the driven shaft 812 rotates in the opposite direction, and the driven shaft 812 rotates in the opposite direction, driving the second pulley 806 on the other side rotates in the opposite direction. Under the action of the synchronous belt 803 on the other side, the second pulley 806 on the other side rotates in the opposite direction, driving the first pulley 804 on the other side rotates in the opposite direction. The synchronous belt 803 on the other side pulls the synchronous rod 802 on the other side to move outward. The synchronous rod 802 on the other side moves outward, pushing the clamping block 801 on the other side to move outward. At this time, the fixing mechanism 8 is separated from the drilling rig.

[0042] When the fixing mechanism 8 has fixed the drilling rig, the locking mechanism 10 is used to lock the fixing mechanism 8, and the locking handle 1001 is twisted clockwise. The locking handle 1001 rotates clockwise to drive the convex block 1002 to rotate clockwise. The convex block 1002 rotates clockwise to push one end of the two prying rods 1004 to move to both sides and stretch the tension spring 1003. The other end of the prying rod 1004 moves in the opposite direction with the shaft seat 1005 as the center. The two prying rods 1004 move in the opposite direction to push the locking block 1006 to contact the driven shaft 812. At this time, the locking mechanism 10 locks the fixing mechanism 8, thereby locking the drilling rig. The drilling rig is fixedly locked on the fixed platform 6, which can effectively prevent the occurrence of self-displacement due to the vibration of the drilling rig itself during use. When the locking mechanism 10 is used to unlock the fixing mechanism 8, the locking handle 1001 is twisted in the opposite direction, and the locking handle 1001 rotates to one side to drive the protrusion 1002 to rotate to one side. The tension spring 1003 contracts and pulls the two prying rods 1004 to move toward each other with the axis seat 1005 as the center. The two prying rods 1004 move toward each other and pull the locking block 1006 out of contact with the driven shaft 812. At this time, the fixing mechanism 8 is unlocked, and the locking mechanism 10 is released from the locking of the drilling rig.

[0043] When the positioning mechanism 9 is used to lock the fixed platform 6, the positioning handle 906 is rotated counterclockwise, and the positioning handle 906 rotates counterclockwise to drive the positioning shaft 905 to rotate counterclockwise, and the positioning shaft 905 rotates counterclockwise to drive the toggle gear 903 to rotate counterclockwise. Under the action of the connecting rod 904, the two toggle gears 903 rotate counterclockwise synchronously, and the toggle gear 903 is meshed and connected with the toggle rack 902. The toggle gear 903 pushes the two toggle racks 902 to move inward, and the two toggle racks 902 move inward to push the two corresponding positioning bars 901 to move toward each other. The two corresponding positioning bars 901 move toward each other and contact the positioning block 601. At this time, the locking block 915 is stuck in the tooth groove of the ratchet 912, and the positioning mechanism 9 locks the fixed platform 6 to prevent it from sliding down.

[0044] When the positioning mechanism 9 is used to unlock the fixed platform 6, the positioning handle 906 is pushed inward, and the positioning handle 906 moves inwardly to drive the pushing rod 911 to move inwardly. The pushing rod 911 moves inwardly to push the positioning plate 907 to move inwardly. The positioning plate 907 moves inwardly to compress the return spring 913. The positioning plate 907 moves inwardly to push the unlocking rod 909 to move inwardly. Under the action of the inclined surface at the end of the unlocking rod 909, the unlocking rod 909 moves inwardly to toggle the locking rod 910 to move outward. The locking rod 910 moves outward to pull the locking block 915 to move outward. The locking block 915 moves outward to compress the compression spring 914. At this time, the locking block 915 is out of contact with the ratchet 912, and the positioning handle 906 is rotated clockwise. The positioning handle 906 rotates clockwise to drive the positioning shaft 905 to rotate clockwise. The positioning shaft 905 rotates clockwise to drive the toggle gear 903 to rotate clockwise. Under the action of the connecting rod 904, the two The toggle gear 903 rotates clockwise synchronously, and the toggle gear 903 is meshed with the toggle rack 902. The toggle gear 903 pulls the two toggle racks 902 to move outward. The two toggle racks 902 move outward and push the two corresponding positioning bars 901 to move in the opposite direction. The two corresponding positioning bars 901 move in the opposite direction and disengage from the positioning block 601. At this time, the positioning mechanism 9 unlocks the fixed platform 6, pulls the positioning handle 906 to move outward, and the reset spring 913 releases the pressure to push the positioning plate 907 to move outward. The positioning plate 907 moves outward and pulls the unlocking rod 909 to move outward. The compression spring 914 releases the pressure to push the locking block 915 to move inward. The locking block 915 is meshed with the ratchet 912. At this time, the ratchet 912 can only rotate in one direction to lock the height position of the fixed platform 6. After the fixed platform 6 is locked, a stable support platform is provided for the drilling rig, thereby ensuring the safety of the drilling rig during use.

[0045] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A hydraulic lifting platform for a tunnel drill for a coal mine, characterized in that: The invention comprises a fixed platform (6), positioning mechanisms (9) are arranged on both sides of the fixed platform (6), a fixing mechanism (8) is arranged on the lower side of the fixed platform (6), a locking mechanism (10) is arranged on one side of the fixing mechanism (8), supporting mechanisms (2) are arranged on both sides of the fixing mechanism (8), a horizontal mechanism (4) is arranged on the lower side of the supporting mechanism (2), the fixing mechanism (8) comprises a plurality of connecting seats (805), the connecting seats (805) are fixedly connected to the lower surface of the fixed platform (6), and the connecting seats (805) are rotatably connected to a first pulley (804) via a rotating shaft. , a driving shaft (807) is rotatably connected to the middle of the other connecting seat (805), a second pulley (806) is fixedly connected to the outer side of the end of the driving shaft (807), a synchronous belt (803) is sleeved on the first pulley (804) and the second pulley (806), a synchronous rod (802) is fixedly connected to one side of the synchronous belt (803), and both ends of the upper surface of the synchronous rod (802) are fixedly connected to a clamping block (801), two sliding grooves (602) are opened in the fixed platform (6), and the clamping block (801) is slidably connected in the sliding grooves (602); The fixing mechanism (8) further comprises two connecting blocks (809), wherein the connecting blocks (809) are fixedly connected to the lower surface of the fixing platform (6), the connecting blocks (809) are rotatably connected to the driving shaft (807), one end of the driving shaft (807) is fixedly connected to a fixing handle (810), the outer side of the driving shaft (807) is fixedly connected to a driving gear (808), one side of the driving gear (808) is provided with a driven gear (811), the driving gear (808) is meshingly connected to the driven gear (811), the middle part of the driven gear (811) is fixedly connected to a driven shaft (812), the driven shaft (812) is rotatably connected to the other connecting block (809), and the driven shaft (812) passes through the end of the connecting block (809) and is fixedly connected to a plurality of teeth; The locking mechanism (10) comprises an axle seat (1005), two axle seats (1005) are fixedly connected to the side of the connecting block (809), each axle seat (1005) is rotatably connected to a prying rod (1004) via a rotating shaft, one end of the prying rod (1004) is rotatably connected to a locking block (1006) via a rotating shaft, one side of the locking block (1006) is provided with an arc surface, the arc surface is provided with a tooth groove matching the teeth on the driven shaft (812), the other ends of the two prying rods (1004) are fixedly connected to tension springs (1003) via fixed blocks, the side of the connecting block (809) is rotatably connected to a locking handle (1001), and the outer side of the end of the locking handle (1001) is fixedly connected to a protrusion (1002); Two positioning blocks (601) are fixedly connected to both sides of the fixed platform (6), a plurality of teeth are fixedly connected to both sides of the positioning block (601), and a guide plate (7) is slidably connected to the outer side of the positioning block (601); The positioning mechanism (9) comprises a positioning shaft (905), the positioning shaft (905) is rotatably connected to the guide plate (7), a toggle gear (903) is fixedly connected to the outer side of the positioning shaft (905), two toggle racks (902) are arranged on both sides of the toggle gear (903), the toggle gear (903) is meshingly connected to the toggle rack (902), and a positioning bar (901) is fixedly connected to each of the two ends of the toggle rack (902), tooth grooves matching the teeth of the positioning block (601) are provided on the opposite sides of the two positioning bars (901), and connecting rods (904) are rotatably connected to the sides of the two toggle gears (903) via a rotating shaft; The positioning mechanism (9) further comprises a housing (908), wherein the housing (908) is rotatably connected to the positioning shaft (905), the housing (908) is fixedly connected to the guide plate (7), a positioning plate (907) is slidably connected to the outer side of the positioning shaft (905), the positioning plate (907) is slidably connected to the housing (908) via a rotating shaft, a return spring (913) is fixedly connected between the positioning plate (907) and the housing (908), and the return spring (913) is sleeved on the outer side of the rotating shaft, an unlocking rod (909) is fixedly connected to the side of the positioning plate (907), and the other end of the unlocking rod (909) is provided with an inclined surface, and a locking rod (910) is slidably connected to the upper and lower side surfaces of the housing (908), and the locking rod (910) is located on the housing (908) A square through hole is provided on the outer side of the housing (908); the locking rod (910) passes through the housing (908) and extends to the end inside the housing (908) and is fixedly connected to a locking block (915); a compression spring (914) is fixedly connected between the locking block (915) and the inner side of the housing (908), and the compression spring (914) is sleeved on the outer side of the locking rod (910); the positioning shaft (905) is located on the outer side of the housing (908) and is fixedly connected to a ratchet (912); an inclined surface matching the ratchet (912) is provided on the end of the locking block (915); a cross-shaped through hole is provided at the other end of the positioning shaft (905); a positioning handle (906) is slidably connected in the cross-shaped through hole; and a push rod (911) is fixedly connected to one side of the positioning handle (906).

2. A hydraulic lifting platform for a tunnel drill for coal mines according to claim 1, characterized in that: The lower surface of the guide plate (7) is fixedly connected to a base (1), and the lower surface of the base (1) is rotatably connected to four universal wheels (5).

3. The hydraulic lifting platform for a tunnel drill for coal mines according to claim 2, characterized in that: The horizontal mechanism (4) comprises a fixed sleeve (401), the fixed sleeve (401) being fixedly connected to the lower surface of the base (1), two sliding shafts (402) being slidably connected inside the fixed sleeve (401), one end of the sliding shaft (402) being fixedly connected to a synchronous rack (403), a synchronous gear (404) being arranged between the two synchronous racks (403), the two synchronous racks (403) being meshingly connected to the synchronous gear (404), the synchronous gear (404) being rotatably connected to the fixed sleeve (401) via a rotating shaft, the other end of the sliding shaft (402) being threadedly connected to an adjusting shaft (406), one end of the adjusting shaft (406) being fixedly connected to a pad (407), and the other end of the adjusting shaft (406) being fixedly connected to a locking nut (405).

4. A hydraulic lifting platform for a tunnel drill for coal mines according to claim 2, characterized in that: The support mechanism (2) comprises an upper sliding sleeve (201), the upper sliding sleeve (201) being fixedly connected to the lower surface of the fixed platform (6), a support arm (202) being slidably connected inside the upper sliding sleeve (201), the two support arms (202) being rotatably connected via a rotating shaft, the other end of the support arm (202) being slidably connected to a lower sliding sleeve (203), and the lower sliding sleeve (203) being fixedly connected to the upper surface of the base (1).

5. The hydraulic lifting platform for a tunnel drill for coal mines according to claim 2, characterized in that: A hydraulic telescopic rod (3) is fixedly connected to the upper surface of the base (1), and an output end of the hydraulic telescopic rod (3) is fixedly connected to the lower surface of the fixed platform (6).

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