Movable and position-limited tunnel reinforcing steel bar trolley operation platform

Abstract

The utility model discloses a movable limit's tunnel reinforcing steel bar trolley operation platform belongs to the technical field of tunnel construction auxiliary equipment, including platform stand, fixed in the channel steel slide way of platform stand top, stretch platform, fixed in the support plate no.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction auxiliary equipment technology, and in particular to a movable and limited tunnel rebar trolley operating platform. Background Technology

[0002] Tunnel rebar trolleys are key equipment in tunnel lining construction, used for binding and installing rebars. To facilitate work by construction personnel at different heights and positions, rebar trolleys are equipped with work platforms.

[0003] As the tunnel face advances, the working platform needs to frequently adjust its extension distance to adapt to construction needs. Therefore, existing working platforms are designed as movable and retractable structures. However, in achieving this retractable function, existing technologies often use simple mechanical rails and roller structures.

[0004] This simple structure leads to significant defects. First, the platform lacks active drive and precise limit locking mechanisms. After the platform is extended into position, it relies heavily on friction and simple manual pins for positioning. When the platform is carrying heavy objects and is subjected to vibrations from the construction environment, this positioning method is unreliable and can cause positional shifts and accidental slippage, resulting in poor stability. Second, the large gap between the guide structure and the track causes the extended platform to sway from side to side during operation, seriously affecting construction safety and operational accuracy.

[0005] How to provide a work platform that can move smoothly, be precisely locked and stopped, and remain highly stable during operation to prevent shaking is a technical problem that urgently needs to be solved in this field.

[0006] Therefore, this utility model proposes a movable and limited tunnel rebar trolley operating platform to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems in the existing tunnel rebar trolley operating platform, such as the lack of precise drive and limit locking mechanisms and the simple guide structure that causes the platform to sway left and right during movement and operation, this utility model aims to provide a movable limit tunnel rebar trolley operating platform with an improved structure that can effectively solve the above problems.

[0008] This utility model provides a movable and limited tunnel rebar trolley operating platform, including: platform column, channel steel slide, extension platform, support plate 2, wedge pulley, hydraulic limit cylinder, connecting boss and connecting rod.

[0009] The bottom of the extension platform is fixedly connected to a support plate two, and a wedge-shaped pulley is rotatably connected to the support plate two. The wedge-shaped pulley rolls and fits in the channel steel slide at the top of the platform column, and the outer circumferential contour of the wedge-shaped pulley is closely matched with the inner wall contour of the channel steel slide.

[0010] Furthermore, the hydraulic limit cylinder is fixedly connected to the upper inner side of the platform column. One end of the connecting rod is slidably connected to the hydraulic limit cylinder, and the other end is fixedly connected to the connecting bosses fixedly connected to both sides of the bottom of the extension platform. Through this combination, the hydraulic limit cylinder drives the connecting rod to move the connecting bosses and the extension platform back and forth on the channel steel slide. The pressure holding characteristics of the hydraulic system are used to achieve reliable platform limiting. At the same time, the tight cooperation between the wedge pulley and the channel steel slide achieves precise guidance and restriction of the lateral movement of the platform when it moves.

[0011] Preferably, when the wedge-shaped pulley is installed on the second support plate, it also includes a high-strength bolt and a high-strength nut. The high-strength bolt passes through the inner wall of the second support plate and is rotatably connected to the inner wall of the wedge-shaped pulley. One end of the high-strength bolt is threadedly connected to the high-strength nut. The high-strength bolt acts as the wheel axle of the wedge-shaped pulley, and the high-strength nut is used to provide reliable fastening force.

[0012] Preferably, the outer periphery of the wedge pulley is designed with a wedge or V-shaped cross section that matches the inner wall profile of the channel steel slide. This close fit of shapes is used to limit the left and right swaying of the extended platform when it moves, thereby significantly improving the lateral stability of the platform in the extended state.

[0013] Preferably, it also includes a support plate one, which is fixedly connected to the front and rear sides of the bottom of the extension platform. The support plate one and the support plate two together form the load-bearing frame at the bottom of the extension platform, providing the main vertical support.

[0014] Preferably, it also includes reinforcing ribs, the outer wall of which is fixedly connected to the inner wall of the second support plate. The reinforcing ribs are provided to improve the structural strength of the second support plate and enhance the overall load-bearing rigidity of the platform.

[0015] Preferably, it also includes an anti-slip protrusion, which is fixedly connected to the adjacent side of the wedge-shaped pulley. The anti-slip protrusion is used to block dust and debris, providing basic physical protection for the wedge-shaped pulley.

[0016] Preferably, the system also includes bolt bushings, with multiple bolt bushings respectively fixedly connected to adjacent sides of multiple high-strength nuts. The bolt bushings are provided to protect the high-strength bolts from wear and impact from the external environment, thereby improving the durability of the pulley system.

[0017] Preferably, it also includes anti-slip protrusions, which are fixedly connected to the top of the extension platform. The function of the anti-slip protrusions is to increase the friction of the platform surface, effectively prevent workers from slipping in wet or dusty environments, and enhance the safety of the operation.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problem of the existing platform being difficult to accurately position and lock after extension and retraction by fixing a hydraulic limit cylinder to the platform column and driving the extension platform through the connecting rod and connecting boss. It achieves the effect of enabling the platform to automatically extend and retract and reliably limit and lock at the extreme position, thereby improving the stability and safety of operation.

[0020] 2. This utility model solves the problem of structural instability and lateral swaying of existing platforms when they move and bear loads by setting a support plate and a rotatably connected wedge pulley at the bottom of the extension platform. The wedge pulley rolls in the channel steel slide at the top of the platform column, and the wedge-shaped fit between the outer contour of the pulley and the inner wall of the slide solves the problem of structural instability and lateral swaying of existing platforms when they move and bear loads. It achieves the effect of effectively suppressing the lateral swaying of the platform while moving smoothly, and ensures the high rigidity of the platform in the cantilever state.

[0021] 3. This utility model, by adding anti-slip protrusions and bolt bushings, protects the rotating connection between the wedge pulley and the high-strength bolt, solving the problem of accelerated wear caused by dust and debris intruding into rotating parts in the tunnel construction environment, and achieving the effect of protecting the core rotating components and extending the service life of the equipment under harsh working conditions. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a movable and limited tunnel rebar trolley operating platform proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the connecting boss of a movable and limiting tunnel rebar trolley operating platform proposed in this utility model.

[0024] Figure 3 This is a schematic diagram of the support plate two of a movable and limited tunnel rebar trolley operating platform proposed in this utility model.

[0025] Figure 4 This is a schematic diagram of the anti-slip protrusion of a movable and limiting tunnel rebar trolley operating platform proposed in this utility model.

[0026] Legend:

[0027] 1. Platform column; 2. Channel steel slide rail; 3. Extension platform; 4. Connecting boss; 5. Support plate one; 6. Support plate two; 7. Reinforcing rib; 8. High-strength bolt; 9. High-strength nut; 10. Wedge pulley; 11. Anti-slip protrusion; 12. Bolt bushing; 13. Hydraulic limit cylinder; 14. Connecting rod; 15. Anti-slip protrusion. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example:

[0030] Please refer to Figures 1 to 4 This utility model provides a movable and limited tunnel rebar trolley operating platform, which aims to solve the technical problems of existing tunnel construction platforms lacking effective guidance during telescopic movement, resulting in left and right swaying and difficulty in locking firmly after reaching the desired position.

[0031] like Figure 1 and Figure 2 As shown, a movable and limited tunnel rebar trolley operating platform includes a platform column 1 as a supporting foundation and an extension platform 3 that is slidably mounted on the top of the platform column 1. The platform column 1 is mainly used to install the guide mechanism and drive mechanism to provide vertical support for the entire operating platform. The extension platform 3 is used to carry construction personnel or materials and can reciprocate horizontally relative to the platform column 1 to adjust the operating range.

[0032] In terms of specific structure and connection, a channel steel slide 2 is fixedly connected to the top of the platform column 1. The channel steel slide 2 extends along the preset extension direction. The bottom of the extension platform 3 is slidably set in the channel steel slide 2. In order to realize the automatic movement and position locking of the extension platform 3, a hydraulic limit cylinder 13 is fixedly connected to the upper side of the inside of the platform column 1. At the same time, connecting bosses 4 are fixedly connected to both sides of the bottom of the extension platform 3. The connecting bosses 4 serve as power receiving ends and are connected to the hydraulic limit cylinder 13 through connecting rods 14. One end of the connecting rod 14 is slidably connected to the inside of the hydraulic limit cylinder 13, and the other end of the connecting rod 14 is fixedly connected to the inside of the connecting bosses 4. During operation, the hydraulic limit cylinder 13 outputs power to push or pull the connecting rod 14. The connecting rod 14 drives the connecting bosses 4 and the extension platform 3 to move on the channel steel slide 2. By utilizing the stroke end point of the hydraulic limit cylinder 13 and the pressure holding and locking characteristics of the hydraulic system, the platform is stably limited at the limit position of extension or retraction.

[0033] To ensure the smoothness and stability of the movement process, a support plate 2 6 is fixedly connected to the bottom of the extension platform 3. A wedge-shaped pulley 10 is rotatably connected to the support plate 2 6. The wedge-shaped pulley 10 rolls and fits inside the channel steel slide 2. Unlike conventional flat pulleys, in this embodiment, the outer periphery of the wedge-shaped pulley 10 is closely matched with the inner wall contour of the channel steel slide 2 to limit the left and right swaying when the extension platform 3 moves. Through this wedge-shaped fit structure, the wedge-shaped pulley 10 can provide lateral support force while bearing vertical load, effectively preventing the extension platform 3 from tilting or shaking when it is suspended in the air.

[0034] Please refer to Figure 3 and Figure 4 The second support plate 6 serves as the base for mounting the wedge pulley 10. A through hole is provided on the inner wall, including a high-strength bolt 8 and a high-strength nut 9. The high-strength bolt 8 passes through the through hole and the center hole of the wedge pulley 10 in sequence. The inner wall of the wedge pulley 10 is rotatably connected to the outer wall of the high-strength bolt 8 through a bearing, so that the high-strength bolt 8 acts as the axle of the wedge pulley 10. One end of the high-strength bolt 8 is threaded with a high-strength nut 9. After the high-strength nut 9 is tightened, it is used to firmly fix the high-strength bolt 8 on the second support plate 6.

[0035] To protect the rotating assembly, an anti-slip protrusion 11 is fixedly connected to the adjacent side of the wedge pulley 10. The anti-slip protrusion 11 is an L-shaped or arc-shaped cover that covers the side and part of the outer periphery of the wedge pulley 10 to block external dust or debris. At the same time, a bolt bushing 12 is also fixedly connected between the high-strength nut 9 and the anti-slip protrusion 11. The bolt bushing 12 surrounds the rod of the high-strength bolt 8 corresponding to the high-strength nut 9. The bolt bushing 12 not only isolates the high-strength nut 9 from direct contact with the anti-slip protrusion 11, but also enhances the stability of the anti-slip protrusion 11 during installation.

[0036] To further enhance the overall load-bearing capacity of the extension platform 3, support plates 1 and 5 are fixedly connected to the front and rear sides of the bottom of the extension platform 3; and reinforcing ribs 7 are fixedly connected to the inner wall of support plate 2 6 to improve the structural strength of support plate 2 6. Support plate 1 and support plate 2 6 together constitute the bottom load-bearing frame of the extension platform 3.

[0037] As a preferred implementation method, to further improve the accuracy and stability of the guidance, please refer to... Figure 1 The outer periphery of the wedge pulley 10 is specially designed to be a wedge or V-shaped section that matches the inner wall profile of the channel steel slide 2. This close fit of shapes is used to limit the left and right swaying when the extension platform 3 moves, ensuring the high lateral stiffness of the platform in the extended state.

[0038] As another preferred embodiment, to improve the safety of operators, please refer to... Figure 1 The top surface of the extension platform 3 is also fixedly connected with anti-slip protrusions 15. The anti-slip protrusions 15 can be rubber particles, metal welds, or integrally stamped protrusions, which are used to increase the friction of the platform surface and prevent personnel from slipping in wet or oily tunnel environments.

[0039] Working principle: When the operation starts, the hydraulic limit cylinder 13 receives the control command and starts to act. The internal piston rod extends or retracts and drives the connecting rod 14 to move. The connecting rod 14 pulls the extension platform 3 to slide back and forth on the channel steel slide 2 at the top of the platform column 1 through the connecting boss 4, thereby realizing the extension of the working platform to approach the construction surface or retraction to avoid obstacles. When the hydraulic limit cylinder 13 moves to the end of the stroke or stops supplying oil, the pressure holding and self-locking characteristics of the hydraulic system lock the extension platform 3 in the current position, realizing a reliable limit function and preventing the platform from sliding unexpectedly when under force.

[0040] During this movement and operation, the wedge-shaped pulley 10 installed on the second support plate 6 rolls and guides within the channel steel slide 2. Because the wedge-shaped outer contour of the wedge-shaped pulley 10 fits tightly against the inner wall of the channel steel slide 2, this structural cooperation allows the extension platform 3 to move smoothly in the longitudinal direction while its lateral freedom is strictly restricted, thereby eliminating the large-scale left and right swaying phenomenon that may occur when the platform is in a cantilever state, ensuring the stability and safety of high-altitude operations. At the same time, the load pressure on the extension platform 3 is effectively transmitted to the platform column 1 through the frame structure composed of the first support plate 5, the second support plate 6, and the reinforcing rib 7. The reinforcing rib 7 improves the bending strength of the second support plate 6, while the anti-slip protrusion 11 and the bolt bushing 12 effectively prevent external cement dust and debris from entering the connection between the high-strength bolt 8 and the wedge-shaped pulley 10, ensuring the long-term reliable operation of the core rotating components in the harsh tunnel environment.

Claims

1. A movable and limited tunnel rebar trolley operating platform, comprising: Platform column (1), the top of which is fixedly connected to a channel steel slide rail (2); Extending platform (3); Support plate two (6), which is fixedly connected to the bottom of the extension platform (3); A wedge-shaped pulley (10) is rotatably connected to the second support plate (6), and the wedge-shaped pulley (10) is rolled in the channel steel slide (2); Its characteristic is that it further includes: A hydraulic limit cylinder (13) is fixedly connected to the upper inside of the platform column (1); Connecting boss (4), the connecting boss (4) is fixedly connected to both sides of the bottom of the extension platform (3); A connecting rod (14) is provided, one end of which is slidably connected to the hydraulic limit cylinder (13), and the other end of which is fixedly connected to the connecting boss (4).

2. The movable and limited tunnel rebar trolley operating platform according to claim 1, characterized in that, It also includes a high-strength bolt (8) and a high-strength nut (9). The wedge pulley (10) is rotatably connected to the inner wall of the second support plate (6) through the high-strength bolt (8). One end of the high-strength bolt (8) is threadedly connected to the high-strength nut (9).

3. The movable and limited tunnel rebar trolley operating platform according to claim 1, characterized in that, The outer periphery of the wedge pulley (10) is adapted to the inner wall profile of the channel steel slide (2) to limit the left and right swaying when the extension platform (3) moves.

4. The movable and limited tunnel rebar trolley operating platform according to claim 1, characterized in that, It also includes a support plate one (5), which is fixedly connected to the bottom front and rear sides of the extension platform (3). The support plate one (5) and the support plate two (6) are used together to support the extension platform (3).

5. The movable and limited tunnel rebar trolley operating platform according to claim 1, characterized in that, It also includes a reinforcing rib (7), the outer wall of which is fixedly connected to the inner wall of the second support plate (6) to improve the structural strength of the second support plate (6).

6. The movable and limited tunnel rebar trolley operating platform according to claim 1, characterized in that, It also includes an anti-slip protrusion (11), which is fixedly connected to the adjacent side of the wedge pulley (10).

7. The movable and limited tunnel rebar trolley operating platform according to claim 2, characterized in that, It also includes bolt bushings (12), and a plurality of bolt bushings (12) are respectively fixedly connected to the adjacent side of a plurality of high-strength nuts (9) to protect the high-strength bolts (8).

8. The movable and limited tunnel rebar trolley operating platform according to claim 1, characterized in that, It also includes anti-slip protrusions (15), which are fixedly connected to the top of the extension platform (3).

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