U-shaped steel leg extraction tool for deformed roadway
By designing a U-shaped steel leg puller including a pulling cylinder, pulley and clamping mechanism, the problem of low manual operation efficiency in the prior art is solved, and the rapid and effective pulling of the U-shaped steel leg is achieved.
Patent Information
- Application Number
- CN202420208749.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-01-29
AI Technical Summary
In the prior art, the steel legs of the deformed U-shaped steel bracket are removed by manually operating crowbars, sledgehammers, etc., which is inefficient and time-consuming.
A U-shaped steel leg lifter for deformation tunnels is designed, including a base frame, a vertical frame, an adjustable mounting hole, a movable base, a pulley cylinder, a top frame, a pulley, a wire rope and a clamping mechanism. By controlling the contraction of the pulling cylinder, the clamping mechanism quickly pulls out the U-shaped steel legs upwards with the cooperation of the pulley rope mechanism.
It realizes the rapid pull-out of U-shaped steel legs, solves the problems of low efficiency and time-consuming and labor-intensive manual operation methods, and improves work efficiency.
Smart Images
Figure CN222680128U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tunnel support maintenance, and in particular relates to a U-shaped steel leg puller for a deformed tunnel. Background Art
[0002] U-shaped steel supports are widely used in tunnel support because of their advantages such as high initial support force, fast resistance increase speed, high support strength and certain shrinkability. When the tunnel is deformed, the U-shaped steel support may be deformed. In a tunnel with rheological surrounding rock, the stress and deformation of the surrounding rock may change over time, thus generating uneven pressure on the support, causing it to bend or twist. In addition, empty sides, empty tops and unbalanced loads can also cause the support to bend or twist.
[0003] The deformed U-shaped steel bracket will lose its proper supporting performance. In order to ensure the safety of support, the deformed U-shaped steel bracket needs to be disassembled. During the disassembly process, the upper arched part needs to be cut and separated from the lower steel leg, so as to remove the arched bracket, and then pull the steel leg upward. Then, during the support process, the bottom of the steel leg sinks into the bottom plate of the tunnel under the pressure of the tunnel, and the space in the tunnel is small, which makes it inconvenient for large equipment to enter. Therefore, the existing technology often uses manual operation of crowbars, sledgehammers, etc. to remove the steel legs. This method has low work efficiency and is time-consuming and labor-intensive. Utility Model Content
[0004] In view of the above problems, the purpose of the utility model is to provide a U-shaped steel leg puller for a deformed tunnel, so as to solve the problems of low work efficiency, time-consuming and labor-intensive removal of steel legs by manual operation of crowbars, sledgehammers and the like in the prior art.
[0005] To achieve the above purpose, the utility model adopts the following technical solution: a U-shaped steel leg puller for a deformable tunnel, comprising a base frame, the base frame is connected to the bottom end of a vertical frame, the vertical frame is provided with an adjustable mounting hole adapted to mount a movable base, a pulling cylinder is mounted on the movable base, a top frame is mounted on the top of the vertical frame, a first pulley and a second pulley are mounted on the bottom of the top frame, the top end of the pulling cylinder piston rod is tied to one end of a steel wire rope, the other end of the steel wire rope is passed around the first pulley and the second pulley and is tied to a clamping mechanism, and the clamping mechanism is connected to the U-shaped steel leg by bolts.
[0006] The beneficial effect of the utility model is that after the clamping mechanism is connected to the U-shaped steel leg, the clamping mechanism can quickly pull out the U-shaped steel leg upward with the cooperation of the pulley and rope mechanism by controlling the contraction of the pulling cylinder, thereby solving the problems of low work efficiency, time-consuming and labor-intensive manual operation.
[0007] In order to firmly connect the U-shaped steel legs and effectively pull out the U-shaped steel legs;
[0008] As a further improvement of the above technical solution: the clamping mechanism includes an upper connecting member, and two lower connecting members are arranged on the left and right sides of the bottom of the upper connecting member. The inner walls of the two lower connecting members are adapted to fit the web of the U-shaped steel leg, and the lower connecting members are provided with plug-in holes.
[0009] The beneficial effect of this improvement is that when the web of the U-shaped steel leg slides between the two lower connecting parts, the operator can drill a hole on the U-shaped steel leg at the corresponding position of the plug-in hole, and then connect the clamping mechanism and the U-shaped steel leg by bolts, so that the U-shaped steel leg can be stably pulled out through the clamping mechanism.
[0010] In order to ensure the structural strength of the clamping mechanism;
[0011] As a further improvement of the above technical solution: reinforcing ribs are provided on both sides of the lower connecting member, and the reinforcing ribs are right-angled triangular plate structures.
[0012] The beneficial effect of this improvement is that the reinforcing rib plate serves to improve the structural strength of the lower connecting member, ensuring that the clamping mechanism can stably drive the U-shaped steel legs to pull out of the bottom plate.
[0013] In order to make the device adapt to pull up the U-shaped steel legs of different cutting heights;
[0014] As a further improvement of the above technical solution: the number of the adjustable mounting holes is multiple, and they are arranged on the vertical frame at equal intervals up and down.
[0015] The beneficial effect of this improvement is that by adjusting the installation height of the movable base on the vertical frame, the height of the clamping mechanism can be adjusted within a larger range, so that the clamping mechanism can adapt to being installed on the top of the U-shaped steel legs at different cutting heights.
[0016] In order to ensure the stability of the movable base installation;
[0017] As a further improvement of the above technical solution: the movable base includes a base body, the base body is an angle iron structure, a screw and a pin are arranged on the side surface of the base body facing the vertical frame, and the adjustable mounting hole is composed of two through holes adapted to connect the screw and the pin.
[0018] The beneficial effect of this improvement is that the screw rod and the pin rod can be inserted into the adjustable mounting hole, and then the movable base can be stably mounted on the vertical frame by tightening the nut, thereby providing reliable support for the lifting cylinder.
[0019] In order to ensure the stability of the device during the extraction process;
[0020] As a further improvement of the above technical solution: the upper side of the vertical frame is threadedly connected with a supporting bolt.
[0021] The beneficial effect of this improvement is that the operator can adjust the position of the support bolt on the vertical frame so that the tail end of the support bolt rests on the side of the tunnel, thereby ensuring better balance of the device during the lifting process.
[0022] In order to ensure the stability of the device structure;
[0023] As a further improvement of the above technical solution: a reinforcing bracket is connected between the vertical frame and the bottom frame, and the bottom frame, the vertical frame and the reinforcing bracket form a tripod structure.
[0024] The beneficial effect of this improvement is that the tripod structure composed of the base frame, the vertical frame and the reinforcing bracket has good structural stability and can effectively ensure the strength of the device during the pulling process.
[0025] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;
[0027] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;
[0028] Figure 3 It is a front view of the utility model;
[0029] Figure 4 It is a structural schematic diagram of the movable base in the utility model;
[0030] Figure 5 It is a structural schematic diagram of the clamping mechanism in the utility model;
[0031] In the figure: 1. base frame; 2. vertical frame; 3. adjustable mounting hole; 4. movable base; 41. base body; 42. screw rod; 43. pin rod; 5. lifting cylinder; 6. top frame; 7. supporting bolt; 8. first pulley; 9. second pulley; 10. wire rope; 11. clamping mechanism; 111. upper connecting piece; 112. lower connecting piece; 113. plug-in hole; 114. reinforcing rib plate; 12. reinforcing bracket; 13. U-shaped steel leg. DETAILED DESCRIPTION
[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.
[0033] Embodiment 1:
[0034] like Figure 1—5 shows: a U-shaped steel leg puller for a deformed tunnel, comprising a base frame 1, wherein the base frame 1 is connected to the bottom end of a vertical frame 2, wherein the vertical frame 2 is provided with an adjustable mounting hole 3 adapted to mount a movable base 4, wherein a lifting cylinder 5 is mounted on the movable base 4, wherein a top frame 6 is mounted on the top of the vertical frame 2, wherein a first pulley 8 and a second pulley 9 are mounted on the bottom of the top frame 6, wherein the top end of the piston rod of the lifting cylinder 5 is fastened to one end of a steel wire rope 10, wherein the other end of the steel wire rope 10 passes through the first pulley 8 and the second pulley 9 and is fastened to a clamping mechanism 11, wherein the clamping mechanism 11 is connected to a U-shaped steel leg 13 by bolts, wherein after the clamping mechanism 11 is connected to the U-shaped steel leg 13, the clamping mechanism 11 can be moved in the sliding position by controlling the contraction of the lifting cylinder 5. With the cooperation of the wheel and rope mechanism, the U-shaped steel leg 13 is quickly pulled out upward, thereby solving the problems of low work efficiency, time-consuming and labor-intensive manual operation. The clamping mechanism 11 includes an upper connecting member 111, and two lower connecting members 112 are relatively arranged on the left and right sides of the bottom of the upper connecting member 111. The inner walls of the two lower connecting members 112 are adapted to fit the web of the U-shaped steel leg 13. The lower connecting member 112 is provided with a plug hole 113. When the web of the U-shaped steel leg 13 is slid into between the two lower connecting members 112, the operator can drill a hole on the U-shaped steel leg 13 at the corresponding position of the plug hole 113, and then connect the clamping mechanism 11 and the U-shaped steel leg 13 by bolts, so that the U-shaped steel leg 13 can be stably pulled out through the clamping mechanism 11. Steel legs 13, both sides of the lower connecting member 112 are provided with reinforcing ribs 114, the reinforcing ribs 114 are of a right-angled triangular plate structure, and the reinforcing ribs 114 play a role in improving the structural strength of the lower connecting member 112, ensuring that the clamping mechanism 11 can stably drive the U-shaped steel legs 13 to be pulled out of the bottom plate, the number of the adjustable mounting holes 3 is multiple, and they are evenly spaced apart on the vertical frame 2, and the height of the clamping mechanism 11 can be adjusted within a large range by adjusting the mounting height of the movable base 4 on the vertical frame 2, so that the clamping mechanism 11 can adapt to the top of the U-shaped steel legs 13 installed at different cutting heights, and the movable base 4 includes a base body 41, and the base body 41 is an angle iron structure, and the base body 41 faces A screw rod 42 and a pin rod 43 are provided on one side of the vertical frame 2. The adjustable mounting hole 3 is composed of two through holes adapted to connect the screw rod 42 and the pin rod 43. The screw rod 42 and the pin rod 43 can be inserted into the adjustable mounting hole 3, and then the movable base 4 can be firmly mounted on the vertical frame 2 by the tightening of the nut, so as to provide reliable support for the lifting cylinder 5. The upper side of the vertical frame 2 is threadedly connected with a support bolt 7. The operator can adjust the position of the support bolt 7 on the vertical frame 2 so that the tail end of the support bolt 7 rests on the side of the laneway, thereby ensuring a better balance of the device during the lifting process. A reinforcing bracket 12 is connected between the vertical frame 2 and the base frame 1. The base frame 1, the vertical frame 2, and the reinforcing bracket 12 form a tripod structure.The tripod structure composed of the base frame 1, the vertical frame 2, and the reinforcing bracket 12 has good structural stability and can effectively ensure the strength of the device during the lifting process.
[0035] The working principle of the present technical solution is as follows: the device is moved to one side of the cut U-shaped steel leg 13, so that the head end of the support bolt 7 faces away from the side wall of the lane where the U-shaped steel leg 13 is located, and then the movable base 4 is placed in the adjustable mounting hole 3 of a suitable height according to the height of the U-shaped steel leg 13 for fixing, so that the clamping mechanism 11 can effectively connect to the top of the U-shaped steel leg 13; then, the lifting and pulling cylinder 5 is controlled to extend, so that the clamping mechanism 11 under the traction of the wire rope 10 falls to the top of the U-shaped steel leg 13, so that the web of the U-shaped steel leg 13 enters The two reinforcing rib plates 114 are arranged between them, and then holes are drilled on the U-shaped steel leg 13 on the inner side of the corresponding plug-in hole 113. Then, bolts are inserted into the plug-in hole 113 and the U-shaped steel leg 13 and tightened. Then, the operator turns the supporting bolts 7 to make the screw ends of the two supporting bolts 7 touch the side of the tunnel, and then controls the piston rod of the pulling cylinder 5 to contract, so that the steel wire rope 10 is pulled upward by the pulling of the pulling cylinder 5 and the rolling support of the first pulley 8 and the second pulley 9, thereby driving the U-shaped steel leg 13 to move upward and pull out the U-shaped steel leg 13.
[0036] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.
[0037] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.
Claims
1. A U-shaped steel leg puller for a deformed tunnel, characterized in that: The utility model comprises a bottom frame (1), wherein the bottom frame (1) is connected to the bottom end of a vertical frame (2), the vertical frame (2) is provided with an adjustable mounting hole (3) adapted to mount a movable base (4), the movable base (4) is provided with a lifting cylinder (5), the top end of the vertical frame (2) is provided with a top frame (6), the bottom of the top frame (6) is provided with a first pulley (8) and a second pulley (9), the top end of the piston rod of the lifting cylinder (5) is fastened to one end of a steel wire rope (10), the other end of the steel wire rope (10) passes around the first pulley (8) and the second pulley (9) and is fastened to a clamping mechanism (11), and the clamping mechanism (11) is connected to a U-shaped steel leg (13) by bolts.
2. A U-shaped steel leg puller for a deformed tunnel according to claim 1, characterized in that: The clamping mechanism (11) comprises an upper connecting member (111), and two lower connecting members (112) are arranged opposite to each other on the left and right sides of the bottom of the upper connecting member (111), the inner walls of the two lower connecting members (112) are adapted to fit the web of the U-shaped steel leg (13), and the lower connecting members (112) are provided with plug-in holes (113).
3. A U-shaped steel leg puller for a deformed tunnel according to claim 2, characterized in that: Reinforcement rib plates (114) are provided on both sides of the lower connecting member (112), and the reinforcement rib plates (114) are of a right-angled triangular plate structure.
4. The U-shaped steel leg puller for a deformed tunnel according to claim 1, characterized in that: The adjustable mounting holes (3) are multiple in number and are arranged on the vertical frame (2) at equal intervals up and down.
5. The U-shaped steel leg puller for a deformed tunnel according to claim 1, characterized in that: The movable base (4) comprises a base body (41), the base body (41) is an angle iron structure, a screw rod (42) and a pin rod (43) are arranged on the side surface of the base body (41) facing the vertical frame (2), and the adjustable mounting hole (3) is composed of two through holes adapted to connect the screw rod (42) and the pin rod (43).
6. The U-shaped steel leg puller for a deformed tunnel according to claim 1, characterized in that: The upper side of the vertical frame (2) is threadedly connected with a supporting bolt (7).
7. The U-shaped steel leg puller for a deformed tunnel according to claim 1, characterized in that: A reinforcing bracket (12) is connected between the vertical frame (2) and the bottom frame (1); the bottom frame (1), the vertical frame (2) and the reinforcing bracket (12) form a tripod structure.