A support platform for tunnel construction

Abstract

The present invention relates to the technical field of support platforms, and specifically to a support platform for tunnel construction, comprising a frame and a support mechanism installed at the lower end of the frame, the support mechanism comprising rollers, an upper support seat, a lower support seat, a support assembly and a locking member. The support assembly comprises an upper rotating rod, a lower rotating rod and an adjusting rod. One end of the upper rotating rod is rotatably installed on the upper support seat, and the other end is rotatably connected to one end of the lower rotating rod. The other end of the lower rotating rod is rotatably installed on the lower support seat and is rotatably connected to one end of the adjusting rod. The locking member connects the lower rotating rod and the adjusting rod. A support platform for tunnel construction of the present invention is provided with a support mechanism. When the adjusting rod abuts against the ground, the support assembly, the upper support seat and the lower support seat are all kept in a relatively stable state, and the adjusting rod can also serve as a side support to support the entire frame after abutting against the ground, thereby improving the stability of the frame.

Description

Technical Field

[0001] The present invention relates to the technical field of supporting platforms, and in particular to a supporting platform for tunnel construction. Background Art

[0002] In the field of tunnel construction, the construction environment is complex and changeable, and strict requirements are placed on construction equipment. In order to meet the needs of operations at different heights, mobile scaffolding is often used.

[0003] Instructions attached Figure 1 and attached Figure 2 A schematic diagram of a supporting mechanism of a supporting platform in the prior art is given in FIG. A scaffold frame (not shown) is installed at the upper end of the supporting mechanism. When the scaffold needs to be moved, see FIG. Figure 1 As shown, only the universal wheel 1 is in contact with the ground, which facilitates the overall movement of the scaffold. After the movement, the foot pedal 2 is stepped on to rotate the foot pedal 2 clockwise, and the locking rod 3 is driven to rotate counterclockwise until the locking rod 3 abuts against the support seat 4, limiting the rotation of the locking rod 3. Figure 2 As shown, at this time, the hinge point of the pedal rod 2 and the locking rod 3 passes through the central axis of the support seat 1 4 in the vertical direction. At this time, the pedal rod 2 and the locking rod 3 cannot automatically reset, and the support seat 1 4 and the support seat 2 5 are far away from each other in the vertical direction. After lifting the universal wheel 1 and installing the side support rod to support the scaffold, it can start normal use. After use, first remove the side support rod, then push the locking rod 3 to rotate clockwise, and drive the pedal rod 2 to rotate counterclockwise, so that the support seat 1 4 and the support seat 2 5 are close to each other in the vertical direction and reset, and the universal wheel 1 contacts the ground again, which is convenient for the scaffold to move. However, since the locking rod 3 is always exposed to the outside, it is easy to be accidentally touched, affecting the normal use of the scaffold. Summary of the invention

[0004] The invention provides a supporting platform for tunnel construction, so as to solve the problem that when the existing supporting platform is in use, after the universal wheel is lifted, a locking rod is easily touched by mistake, thereby affecting the normal use of a scaffold.

[0005] A support platform for tunnel construction of the present invention adopts the following technical scheme: a support platform for tunnel construction, including a frame and four support mechanisms; the frame is arranged along a first direction and has four legs, the first direction being a vertical direction; the four support mechanisms are arranged in a one-to-one correspondence with the four legs, and each support mechanism is installed at the lower end of the corresponding leg; the support mechanism includes a roller, an upper support seat, a lower support seat, a support assembly and a locking piece, the roller is arranged at the lower end of the leg and can be rotatable around a first direction and a second direction, the second direction being a horizontal direction; the upper support seat is arranged at the lower end of the frame; the upper support seat and the lower support seat are both arranged along the first direction, and the upper support seat and the lower support seat can move relative to each other in the first direction; the support assembly includes an upper rotating rod, a lower rotating rod and an adjusting rod; one end of the upper rotating rod can be arranged to rotate around the second direction It is installed on the upper support seat, and the other end of the upper rotating rod is rotatably connected to one end of the lower rotating rod, and the other end of the lower rotating rod can be rotatably installed on the lower support seat around a second direction, and is rotatably connected to one end of the adjusting rod, and the other end of the adjusting rod can abut against the ground; the locking piece connects the lower rotating rod and the adjusting rod, and can limit the rotation of the lower rotating rod and the adjusting rod relative to the locking piece; the supporting mechanism has a first state and a second state, when in the first state, the roller contacts the ground, and the adjusting rod and the lower support seat are not in contact with the ground; when in the second state, the roller does not contact the ground, and the adjusting rod and the lower support seat are in contact with the ground; in the initial state, the supporting mechanism is in the first state, and the rotation of the adjusting rod around the second direction can make the upper support seat and the lower support seat move away from each other in the first direction, and switch the supporting mechanism from the first state to the second state.

[0006] Furthermore, the upper support seat and the lower support seat are connected via a first elastic member, and the first elastic member is arranged along the first direction.

[0007] Furthermore, the end of the upper rotating rod rotatably connected to the upper support seat is called the first connecting end, and the end of the lower rotating rod rotatably connected to the lower support seat is called the second connecting end, and when the support mechanism is in the second state, the distance from the first connecting end to the second connecting end along the first direction is greater than the distance from the first connecting end to the second connecting end along the first direction when the support mechanism is in the first state.

[0008] Furthermore, one end of the adjusting rod abutting against the ground is rotatably connected to a support.

[0009] Furthermore, the adjusting rod is a telescopic rod.

[0010] Furthermore, the adjusting rod includes a first rod body and a second rod body, the first rod body and the second rod body are slidably connected, and the first rod body is provided with a first socket, and the second rod body is provided with multiple second sockets, and the first socket is connected to any second socket through a pin.

[0011] Furthermore, the locking member is a locking rod; both ends of the locking rod are respectively connected to the lower rotating rod and the adjusting rod.

[0012] Furthermore, each supporting mechanism is mounted on the lower end of its corresponding supporting leg through a mounting plate.

[0013] Furthermore, two support assemblies are provided, the two support assemblies are arranged in parallel in the second direction, and the adjustment rods of the two support assemblies are connected by a connecting plate, and the connecting plate is arranged along the second direction.

[0014] Furthermore, the locking member is a first hydraulic cylinder, the first rod body and the lower rotating rod are connected through the first hydraulic cylinder, the first rod body and the second rod body are connected through the second hydraulic cylinder, and the first hydraulic cylinder and the second hydraulic cylinder are connected through a connecting pipe.

[0015] The beneficial effects of the present invention are as follows: a support platform for tunnel construction of the present invention is provided with four support mechanisms at the lower ends of the legs of the frame, and the support mechanism is in the first state in the initial state, at which time the roller contacts the ground, and the entire frame can be driven to move in the tunnel by the roller. After moving to the designated position, the adjustment rod is rotated clockwise around the second direction, and the rotation of the adjustment rod will drive the lower rotating rod to rotate, and the lower rotating rod drives the upper rotating rod to rotate, so that both the lower rotating rod and the upper rotating rod rotate around the second direction until the adjustment rod can contact the ground, and the support mechanism is in the second state. At this time, the adjustment rod abuts against the ground, and the locking member connects the lower rotating rod and the adjustment rod, and can limit the rotation of the lower rotating rod and the adjustment rod relative to the locking member, that is, at this time, the angle of the connection between the lower rotating rod and the adjustment rod is fixed, and a stable fit is formed by the lower rotating rod, the adjustment rod and the locking member, which limits the upper support seat and the lower support seat from approaching each other in the first direction, so that the support assembly, the upper support seat and the lower support seat are all kept in a relatively stable state, and the adjustment rod can also serve as a side support to support the entire frame after abutting against the ground, thereby improving the stability of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the universal wheel in the existing support platform in contact with the ground;

[0018] Figure 2 It is a schematic diagram of the existing support platform when the support seat 2 is in contact with the ground;

[0019] Figure 3 It is a schematic diagram of the overall structure of an embodiment of a supporting platform for tunnel construction of the present invention;

[0020] Figure 4 It is a schematic diagram of a supporting mechanism of an embodiment of a supporting platform for tunnel construction of the present invention in an initial state;

[0021] Figure 5 It is a schematic diagram of a supporting mechanism of an embodiment of a supporting platform for tunnel construction of the present invention in a second state;

[0022] Figure 6 It is a structural schematic diagram of a support assembly of an embodiment of a support platform for tunnel construction of the present invention;

[0023] Figure 7 It is a schematic structural diagram of an adjusting rod of an embodiment of a supporting platform for tunnel construction of the present invention;

[0024] Figure 8 This is a state diagram of a supporting platform for tunnel construction according to another embodiment of the present invention.

[0025] In the figure: 1, universal wheel; 2, pedal rod; 3, locking rod; 4, support seat 1; 5, support seat 2; 100, frame; 101, support leg; 110, mounting plate; 200, support mechanism; 210, roller; 220, upper support seat; 230, lower support seat; 240, locking piece; 250, upper rotating rod; 260, lower rotating rod; 270, adjusting rod; 271, support seat; 272, connecting plate; 273, first rod body; 274, second rod body; 275, first socket; 276, second socket; 277, latch; 300, ground. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] An embodiment of a support platform for tunnel construction of the present invention is as follows Figures 3 to 7 shown.

[0028] A support platform for tunnel construction includes a frame 100 and four support mechanisms 200. The frame 100 is arranged along a first direction and has four legs 101, and the first direction is a vertical direction. The four support mechanisms 200 are arranged in a one-to-one correspondence with the four legs 101, and each support mechanism 200 is installed at the lower end of the corresponding leg 101.

[0029] The support mechanism 200 includes a roller 210, an upper support seat 220, a lower support seat 230, a support assembly and a locking member 240. The roller 210 is arranged at the lower end of the leg 101 so as to be rotatable around a first direction and a second direction, and the second direction is a horizontal direction. The upper support seat 220 is arranged at the lower end of the leg 101. The upper support seat 220 and the lower support seat 230 are both arranged along the first direction, and the upper support seat 220 and the lower support seat 230 can move relative to each other in the first direction.

[0030] The support assembly includes an upper rotating rod 250, a lower rotating rod 260 and an adjusting rod 270. One end of the upper rotating rod 250 is rotatably mounted on the upper support seat 220 around the second direction, the other end of the upper rotating rod 250 is rotatably connected to one end of the lower rotating rod 260, the other end of the lower rotating rod 260 is rotatably mounted on the lower support seat 230 around the second direction, and is rotatably connected to one end of the adjusting rod 270, and the other end of the adjusting rod 270 can abut against the ground 300. The locking member 240 connects the lower rotating rod 260 and the adjusting rod 270, and can limit the rotation of the lower rotating rod 260 and the adjusting rod 270 relative to the locking member 240.

[0031] The support mechanism 200 has a first state and a second state. When in the first state, the roller 210 is in contact with the ground 300, and the adjustment rod 270 and the lower support seat 230 are not in contact with the ground 300; when in the second state, the roller 210 is not in contact with the ground 300, and the adjustment rod 270 and the lower support seat 230 are in contact with the ground 300; in the initial state, the support mechanism 200 is in the first state, and the rotation of the adjustment rod 270 about the second direction can make the upper support seat 220 and the lower support seat 230 move away from each other in the first direction, and switch the support mechanism 200 from the first state to the second state.

[0032] Specifically, the upper support seat 220 and the lower support seat 230 are connected via a first elastic member, the first elastic member is arranged along the first direction, and the first elastic member is a tension spring.

[0033] Furthermore, each support mechanism 200 is mounted on the lower end of the corresponding support leg 101 through the mounting plate 110. The end of the adjustment rod 270 that abuts against the ground 300 is rotatably connected to a support 271.

[0034] There are two support assemblies, which are arranged in parallel in the second direction, and the adjustment rods 270 of the two support assemblies are connected by a connecting plate 272, which is arranged along the second direction.

[0035] In this embodiment, four supporting mechanisms 200 are arranged at the lower ends of the legs 101 of the frame 100. Figure 4 As shown, in the initial state, the support mechanism 200 is in the first state, at which time the roller 210 is in contact with the ground 300, and the roller 210 can drive the entire frame 100 to move in the tunnel.

[0036] After moving to the designated position, the adjusting rod 270 is rotated clockwise around the second direction. Figure 4 The adjustment rod 270 rotates clockwise, which drives the lower rotating rod 260 to rotate, and drives the upper rotating rod 250 to rotate through the lower rotating rod 260, so that the lower rotating rod 260 and the upper rotating rod 250 rotate around the second direction until the adjustment rod 270 can contact the ground 300. At this time, the support mechanism 200 is moved from the surrounding Figure 4 The status shown switches to the Figure 5 The state shown in the figure, and the upper support seat 220 and the lower support seat 230 are away from each other in the first direction, that is, the heights of the upper support seat 220 and the lower support seat 230 in the first direction increase, the lower support seat 230 contacts the ground 300, and lifts the entire roller 210 to make the roller 210 leave the ground 300, and the support mechanism 200 is in the second state.

[0037] At this time, the adjustment rod 270 is in contact with the ground 300. Since the locking piece 240 connects the lower rotating rod 260 and the adjustment rod 270, and can limit the rotation of the lower rotating rod 260 and the adjustment rod 270 relative to the locking piece 240, that is, at this time, the angle of the connection between the lower rotating rod 260 and the adjustment rod 270 is fixed, and the lower rotating rod 260, the adjustment rod 270 and the locking piece 240 form a stable fit, which limits the upper support seat 220 and the lower support seat 230 from approaching each other in the first direction, so that the support assembly, the upper support seat 220 and the lower support seat 230 are all maintained in a relatively stable state, and after the adjustment rod 270 abuts against the ground 300, it can also serve as a side support to support the entire frame 100, thereby improving the stability of the frame 100.

[0038] In this embodiment, the end of the upper rotating rod 250 rotatably connected to the upper support seat 220 is called the first connection end, and the end of the lower rotating rod 260 rotatably connected to the lower support seat 230 is called the second connection end, and when the support mechanism 200 is in the second state, the distance from the first connection end to the second connection end along the first direction is greater than the distance from the first connection end to the second connection end along the first direction when the support mechanism 200 is in the first state.

[0039] See attached Figure 4 To Attachment Figure 5As shown, in the initial state, the distance from the first connection end to the second connection end along the first direction is the shortest, and during the rotation of the adjustment rod 270, the distance from the first connection end to the second connection end along the first direction gradually increases, and when the upper rotating rod 250 and the lower rotating rod 260 pass through the connecting line of the upper support seat 220 and the lower support seat 230 in the first direction, the distance from the first connection end to the second connection end along the first direction reaches the maximum, and then becomes smaller for a distance, so that when the support mechanism 200 is in the second state, the distance from the first connection end to the second connection end along the first direction is greater than the distance from the first connection end to the second connection end when the support mechanism 200 is in the first state. That is, the height of the upper support seat 220 and the lower support seat 230 in the first direction increases, and the entire roller 210 is lifted, so that the roller 210 is off the ground 300.

[0040] In this embodiment, the adjustment rod 270 is a telescopic rod.

[0041] Specifically, the adjustment rod 270 includes a first rod body 273 and a second rod body 274, the first rod body 273 and the second rod body 274 are slidably connected, and a first hole 275 is opened on the first rod body 273, and a plurality of second holes 276 are opened on the second rod body 274. The first hole 275 is connected to any one of the second holes 276 through a pin 277.

[0042] By setting the adjusting rod 270 as a telescopic rod, the adjusting rod 270 needs to be extended to different lengths due to the different heights of the frame 100. Therefore, the adjusting rod 270 is set as a telescopic rod. When the adjusting rod 270 needs to be extended, the pin 277 is first pulled out, and then the second rod body 274 is slid relative to the first rod body 273, thereby extending the entire adjusting rod 270. After the adjusting rod 270 reaches the required length, a suitable second socket 276 is selected, and the pin 277 is inserted back into the first socket 275 and the second socket 276 to lock the length of the adjusting rod 270 again. The extended length of the adjusting rod 270 can be adjusted as needed to adapt it to the height of the frame 100.

[0043] In this embodiment, the locking member 240 is a locking rod, and two ends of the locking rod are connected to the lower rotating rod 260 and the adjusting rod 270 respectively.

[0044] By setting a locking rod, when in use, the relative positions among the lower rotating rod 260, the adjusting rod 270 and the locking rod are fixed, and then when the support 271 abuts against the ground 300, the locking rod can limit the lower rotating rod 260 and the adjusting rod 270 from rotating relative to the locking rod, thereby limiting the upper support seat 220 and the lower support seat 230 from approaching each other in the first direction.

[0045] In another possible embodiment, see the attached Figure 8As shown, the locking member 240 is a first hydraulic cylinder, the first rod body 273 and the lower rotating rod 260 are connected through the first hydraulic cylinder, the first rod body 273 and the second rod body 274 are connected through the second hydraulic cylinder, and the first hydraulic cylinder and the second hydraulic cylinder are connected through a connecting pipe.

[0046] The present embodiment sets a first hydraulic cylinder between the first rod body 273 and the lower rotating rod 260. The difference from the previous embodiment is that: when the second rod body 274 moves relative to the first rod body 273, thereby extending the entire adjusting rod 270, the second rod body 274 moves relative to the first rod body 273, so that the hydraulic oil in the first hydraulic cylinder flows from the connecting pipe into the second hydraulic cylinder, replenishing the hydraulic oil for the second hydraulic cylinder, thereby shortening the length of the first hydraulic cylinder. The shortening of the length of the first hydraulic cylinder will pull the lower rotating rod 260, and the first hydraulic cylinder is used as the main force to promote the lower rotating rod 260 to move. Figure 8 The upper rotating rod 250 rotates clockwise as shown, and drives the upper rotating rod 250 to rotate counterclockwise, that is, the angle defined by the upper rotating rod 250 and the lower rotating rod 260 toward the side of the roller 210 is reduced.

[0047] After the adjusting rod 270 is extended, it will contact the ground 300, and at this time the length of the first hydraulic cylinder no longer changes but is a constant value, that is, the lower rotating rod 260 and the adjusting rod 270 are restricted by the first hydraulic cylinder and cannot rotate relative to each other. At this time, the lower rotating rod 260 and the adjusting rod 270 can be regarded as a whole, and the rotation connection point of the upper rotating rod 250 and the lower rotating rod 260 is analyzed, and its rotation torque M=F*L, wherein F is the supporting force of the support 271 on the frame 100, and the lever arm L is the vertical distance from the rotation connection point of the upper rotating rod 250 and the lower rotating rod 260 to the vertical line passing through the point where the support 271 is located. Therefore, the longer the adjusting rod 270 is, the larger L is.

[0048] When the upper rotating rod 250 and the lower rotating rod 260 pass through the line connecting the upper support seat 220 and the lower support seat 230 in the first direction, that is, when the distance from the first connecting end to the second connecting end along the first direction reaches the maximum, the lever arm L is 0 at this time, so the turning torque M is 0, and as the upper rotating rod 250 and the lower rotating rod 260 continue to rotate, M will gradually increase. At this time, the angle defined by the upper rotating rod 250 and the lower rotating rod 260 on the side facing the roller 210 decreases, that is, the angle defined by the upper rotating rod 250 and the lower rotating rod 260 on the side facing the roller 210 decreases, and the turning torque M of the rotating connection point of the upper rotating rod 250 and the lower rotating rod 260 will increase.

[0049] Therefore, by reducing the angle defined by the upper rotating rod 250 and the lower rotating rod 260 on the side facing the roller 210, the turning torque M of the rotation connection point of the upper rotating rod 250 and the lower rotating rod 260 is gradually increased, so that the supporting force F of the support 271 on the frame 100 remains basically unchanged, that is, after the adjusting rod 270 is extended, L becomes larger. If F is to remain basically unchanged, it is necessary to increase M. By using the first hydraulic cylinder as the main driving force, the lower rotating rod 260 and the upper rotating rod 250 are driven to rotate after the adjusting rod 270 is extended, thereby increasing the turning torque M of the rotation connection point, so that the supporting force of the support 271 on the frame 100 remains basically unchanged, and the support of the entire support mechanism 200 to the frame 100 is more stable.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A support platform for tunnel construction, characterized in that: It comprises a frame and four supporting mechanisms; the frame is arranged along a first direction and has four legs, the first direction being a vertical direction; the four supporting mechanisms are arranged in one-to-one correspondence with the four legs, and each supporting mechanism is installed at the lower end of the corresponding leg; the supporting mechanism comprises a roller, an upper supporting seat, a lower supporting seat, a supporting assembly and a locking member, the roller is arranged at the lower end of the leg so as to be rotatable around a first direction and a second direction, the second direction being a horizontal direction; the upper supporting seat is arranged at the lower end of the frame; the upper supporting seat and the lower supporting seat are both arranged along the first direction, and the upper supporting seat and the lower supporting seat can move relative to each other in the first direction; The support assembly includes an upper rotating rod, a lower rotating rod and an adjusting rod; one end of the upper rotating rod is rotatably mounted on the upper support seat around a second direction, the other end of the upper rotating rod is rotatably connected to one end of the lower rotating rod, the other end of the lower rotating rod is rotatably mounted on the lower support seat around the second direction, and is rotatably connected to one end of the adjusting rod, and the other end of the adjusting rod can abut against the ground; a locking member connects the lower rotating rod and the adjusting rod, and can limit the lower rotating rod and the adjusting rod from rotating relative to the locking member; The support mechanism has a first state and a second state. When in the first state, the roller contacts the ground, and the adjusting rod and the lower support seat are not in contact with the ground; when in the second state, the roller is not in contact with the ground, and the adjusting rod and the lower support seat are in contact with the ground; in the initial state, the support mechanism is in the first state, and the adjustment rod rotates around the second direction to make the upper support seat and the lower support seat move away from each other in the first direction, and the support mechanism switches from the first state to the second state; the end of the upper rotating rod and the upper support seat that are rotatably connected is called the first connecting end, and the end of the lower rotating rod and the lower support seat that are rotatably connected is called the second connecting end, and when the support mechanism is in the second state, the distance from the first connecting end to the second connecting end along the first direction is greater than the distance from the first connecting end to the second connecting end along the first direction when the support mechanism is in the first state; the adjusting rod is a telescopic rod; the adjusting rod includes a first rod body and a second rod body, the first rod body and the second rod body are slidably connected, and a first plug hole is provided on the first rod body, and a plurality of second plug holes are provided on the second rod body, and the first plug hole is connected to any one of the second plug holes by a pin.

2. A tunnel construction support platform according to claim 1, characterized in that: The upper support seat and the lower support seat are connected via a first elastic member, and the first elastic member is arranged along a first direction.

3. A tunnel construction support platform according to claim 1, characterized in that: One end of the adjusting rod abutting against the ground is rotatably connected with a support.

4. A tunnel construction support platform according to claim 1, characterized in that: The locking piece is a locking rod; two ends of the locking rod are respectively connected with the lower rotating rod and the adjusting rod.

5. A tunnel construction support platform according to claim 1, characterized in that: Each supporting mechanism is mounted on the lower end of the corresponding supporting leg through a mounting plate.

6. A tunnel construction support platform according to claim 1, characterized in that: There are two support assemblies, which are arranged in parallel in the second direction, and the adjustment rods of the two support assemblies are connected by a connecting plate, which is arranged along the second direction.

7. A tunnel construction support platform according to claim 1, characterized in that: The locking member is a first hydraulic cylinder, the first rod body and the lower rotating rod are connected through the first hydraulic cylinder, the first rod body and the second rod body are connected through the second hydraulic cylinder, and the first hydraulic cylinder and the second hydraulic cylinder are connected through a connecting pipe.

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