Tunnel reinforcement cage operation equipment with longitudinal traction mechanism

Abstract

The utility model discloses tunnel reinforcement cage operation equipment with a longitudinal traction mechanism, which comprises a bearing frame, a pair of arc-shaped rails fixed on the outer side of the bearing frame, and a drawing device arranged on the arc-shaped rails and used for driving steel bars to be arranged in the circumferential direction of a tunnel from being arranged in the length direction of the tunnel. The traction mechanism is fixed to the bearing frame and used for dragging the steel bars in the length direction of the tunnel. By arranging the traction mechanism, the steel bars can be dragged in the length direction of the tunnel through electric energy, so that a manual dragging mode in the prior art can be replaced, the manpower demand is reduced, and the working efficiency and the automation degree can be relatively improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of tunnel construction, and particularly relates to a tunnel steel cage operation device with a longitudinal traction mechanism. Background Art

[0002] Secondary lining (abbreviated as "second lining") is a commonly used term in tunnel engineering construction. It refers to the reinforced concrete lining constructed on the inner side of the primary support, aiming to jointly form a composite lining with the primary support to achieve the function of strengthening the support and thus meet the requirements of modern tunnel construction.

[0003] The secondary lining includes steel bar construction, that is, an arched steel cage adapted to the shape of the tunnel inner wall is formed by binding. When using the existing tunnel steel cage operation device (such as the technical solution disclosed in the Chinese patent application document with the application publication number: CN 115163139 A and the invention name "Tunnel Steel Cage Operation Device and Tunnel Steel Cage Construction Method") for steel bar construction, first, the steel bars are arranged on one side of the tunnel floor along the longitudinal direction (i.e., the tunnel length direction), and then one end of the steel bar is pulled by a pulling device to make it move along the tunnel circumferential direction following the pulling device.

[0004] When the steel bars are lifted from the transport vehicle to one side of the tunnel floor, the steel bars are usually in a neatly arranged state (i.e., the two ends are basically flush), while the hanging parts used to connect the steel bars in the pulling device are arranged at intervals along the longitudinal direction (i.e., the tunnel length direction). Therefore, before connecting the steel bars to the pulling device, the steel bars must be moved along the longitudinal direction (i.e., the tunnel length direction) to make the ends correspond to the positions of the hanging parts of the pulling device one by one. The existing tunnel steel cage operation device does not have the mechanism and ability to pull the steel bars along the longitudinal direction (i.e., the tunnel length direction), so manual dragging is required, but this method requires a lot of manpower and has low efficiency, which does not meet the requirements of the automation trend. Therefore, a tunnel steel cage operation device provided with a traction mechanism capable of dragging the steel bars along the longitudinal direction is needed. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a tunnel steel cage operation device with a longitudinal traction mechanism.

[0006] To solve the above technical problem, the utility model adopts the following technical solutions:

[0007] A tunnel steel cage operation device with a longitudinal traction mechanism includes a carrier frame, a pair of arc-shaped tracks fixed on the outside of the carrier frame, a pulling device arranged on the arc-shaped tracks and used to drive the steel bars to change from being arranged along the tunnel length direction to being arranged along the tunnel circumferential direction, and a traction mechanism fixed on the carrier frame and used to drag the steel bars along the tunnel length direction.

[0008] As a further improvement of the above technical solution:

[0009] The traction mechanism includes a support connected to the carrier. The support is arranged along the length direction of the tunnel, and a gear is installed at each end of the support. A chain is sleeved on the gear and meshes with it. One end of the support is also equipped with a motor, the output shaft of the motor is fixed to the gear at this end, and the chain is connected to a hanging piece for pulling the steel bars.

[0010] The support includes a chute with an open lower end and a slider fitted in the chute. The slider is fixed to the chain and is connected to the hanging piece for pulling the steel bars.

[0011] Baffles for preventing the slider from slipping out are provided at both ends of the chute, and buffer blocks are arranged at both ends of the slider along the length direction of the tunnel.

[0012] Rollers are installed on the slider, and the slider is in rolling contact with the chute.

[0013] An installation frame is provided at each end of the chute. A first roller is penetrated through the installation frame, and the first roller is located below the chute. The chain is penetrated between the first roller and the chute.

[0014] The support includes a secondary chute with an open upper end. A number of second rollers are arranged at intervals along the length direction of the secondary chute. The chain is penetrated between the second roller and the bottom plate of the secondary chute.

[0015] The tunnel steel cage working equipment further includes a connecting frame. One end of the connecting frame is fixed to the carrier, and the other end is connected to the traction mechanism.

[0016] Compared with the prior art, the advantages of the present utility model are as follows:

[0017] By setting the traction mechanism, it is possible to realize dragging the steel bars along the length direction of the tunnel by using electric energy, thereby being able to replace the manual dragging method in the prior art, further reducing the labor demand, and relatively improving the working efficiency and automation degree. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the tunnel steel cage working equipment;

[0019] Figure 2 is a schematic structural diagram of the traction mechanism;

[0020] Figure 3 is Figure 2 a partial enlarged schematic diagram of A in

[0021] Figure 4 is Figure 2 a partial enlarged schematic diagram of B in

[0022] Figure 5 It is a structural schematic diagram of the slider and the hanging part;

[0023] Figure 6 It is a partial schematic diagram of the support.

[0024] Each label in the figure represents: 1. Bearing frame; 11. U-shaped frame; 12. Beam; 2. Arc track; 21. Belt; 3. Drawing device; 4. Traction mechanism; 41. Support; 411. Chute; 4111. Baffle; 412. Slider; 4121. Buffer block; 4122. Roller; 413. Mounting frame; 4131. First roller; 414. Auxiliary groove; 4141. Second roller; 4142. Bottom plate; 42. Gear; 43. Chain; 44. Motor; 45. Hanging part; 5. Connecting frame. Specific embodiments

[0025] The following will further describe the present invention in detail with reference to the accompanying drawings of the specification and specific embodiments.

[0026] Embodiment

[0027] As Figures 1 to 6, the tunnel steel cage working equipment with a longitudinal traction mechanism in this embodiment includes a carrier frame 1, a pair of arc tracks 2 fixed on the outside of the carrier frame 1, and a drawing device 3 arranged on the arc tracks 2 for driving the steel bars to be arranged along the tunnel length direction to be arranged along the tunnel circumferential direction. It also includes a traction mechanism 4 fixed on the carrier frame 1 for dragging the steel bars along the tunnel length direction. The carrier frame 1 is arranged as an arch frame, which includes four U-shaped frames 11 arranged at intervals along the tunnel length direction, and each U-shaped frame 11 is connected into a whole by a beam 12 arranged along the tunnel length direction. One arc track 2 is fixed at the forefront of the carrier frame 1 along the tunnel length direction, and the other arc track 2 is fixed at the end of the carrier frame 1 along the tunnel length direction. A belt 21 is arranged on the arc track 2, and the belt 21 is connected to the drawing device 3 arranged along the tunnel length direction. The belt 21 can reciprocate along the arc track 2 under the drive of an external driver, so as to drive the drawing device 3 to move synchronously along the arc track 2. The structures, assembly relationships, and working principles of the carrier frame 1, the arc track 2, and the drawing device 3 are all prior arts and will not be elaborated here. The difference between this embodiment and the prior art is mainly reflected in the addition of a traction mechanism 4 fixed on the carrier frame 1 for dragging the steel bars along the tunnel length direction. The traction mechanism 4 is connected to the carrier frame 1 through a connecting frame 5, and it includes a support 41 connected to the carrier frame 1. The support 41 is arranged along the tunnel length direction, and a gear 42 is arranged at each end of it. A chain 43 meshing with the gear 42 is sleeved on the gear 42; a motor 44 is also installed at one end of the support 41, and the output shaft of the motor 44 is fixed to the gear 42 at this end. The chain 43 is connected to a hanging part 45 for pulling the steel bars. Specifically, the support 41 includes a chute 411 with an open lower end, and a slider 412 fitted and installed in the chute 411. The slider 412 is fixed to the chain 43 and is connected to the hanging part 45 for pulling the steel bars. The linear chute 411 is arranged along the tunnel length direction. It is a rectangular cross-section profile with an incomplete open bottom end. A gear 42 is distributed at each end of the profile. One of the gears 42 is connected to the output shaft of the motor 44 fixed at the same end of the profile to transmit torque. A chain 43 is sleeved on the two gears 42, and the chain 43 meshes with the gears. Therefore, when the motor 44 is started, the gear 42 connected to its output shaft rotates and drives the chain 43 and the other gear 42 to rotate accordingly. And the chain 43 is connected to a slider 412 fitted and installed in the chute 411, and this slider is also connected to the hanging part 45 for pulling the steel bars at the same time. Therefore, the slider 412 and the hanging part 45 will reciprocate along the tunnel length direction with the forward / backward rotation of the motor 44. The hanging part 45 is detachably connected to the end of the steel bar. When the hanging part 45 moves along the tunnel length direction, it can drag the steel bar to move synchronously. That is to say, this embodiment can realize dragging the steel bar along the tunnel length direction by using electric energy through the setting of the traction mechanism 4, so as to be able to replace the manual dragging method in the prior art, thereby reducing the manpower requirement and relatively improving the work efficiency and automation degree.

[0028] In this embodiment, baffles 4111 for preventing the slider 412 from disengaging are provided at both ends of the chute 411, and buffer blocks 4121 are provided at both ends of the slider 412 along the tunnel length direction. Both ends of the chute 411 are open. To prevent the slider 412 from moving excessively and disengaging from the chute 411, a baffle 4111 is provided at each end thereof. The baffle 4111 is used to block the end opening of the chute 411. By providing this baffle 4111, when the slider 412 moves to the end position of the chute 411, it cannot continue to move due to the obstruction of the baffle 4111, thereby avoiding disengaging from the chute 411. At the same time, buffer blocks 4121 are provided at both ends of the slider 412 along the tunnel length direction. The buffer blocks 4121 can be made of rubber blocks. When the slider 412 moves to the end position of the chute 411, the buffer blocks 4121 directly collide with the baffle 4111. By utilizing the elastic properties of the buffer blocks 4121, a buffering effect can be achieved to a certain extent, thereby reducing the probability of damage to the slider 412 caused by the collision. Further, rollers 4122 are installed on the slider 412, and the slider 412 is in rolling contact with the chute 411. By providing the rollers 4122, the contact between the slider 412 and the chute 411 is changed from frictional contact to rolling contact. When the friction is reduced, the wear between the slider 412 and the chute 411 can be delayed to a certain extent, thereby extending the service life of the equipment.

[0029] In this embodiment, mounting brackets 413 are provided at both ends of the chute 411. A first roller 4131 is inserted through the mounting bracket 413. The first roller 4131 is located below the chute 411. The chain 43 is threaded between the first roller 4131 and the chute 411. It is difficult to fully tension the chain 43. Therefore, the chain 43 may disengage from the gear 42 during rotation. The chain 43 that rotates at high speed disengaging from the gear 42 will not only cause equipment failures, but may also cause personal injuries due to the collision of the flying chain 42. In this embodiment, by providing mounting brackets 413 with first rollers 4131 inserted therethrough at both ends of the chute 411 and arranging the chain 43 between the first roller 4131 and the chute 411, the probability of the chain 43 disengaging from the gear 42 can be reduced to a certain extent, and the complete flying out of the chain 43 can be avoided, thereby enhancing the reliability and safety of the equipment to a certain extent. At the same time, the support 41 includes a secondary groove 414 with an open upper end. A number of second rollers 4141 are arranged at intervals along the length direction of the tunnel in the secondary groove 414. The chain 43 is threaded between the second roller 4141 and the bottom plate 4142 of the secondary groove 414. The secondary groove 414 is in contact with the chute 411. By providing a chute 411 with second rollers 4141 inserted therethrough and arranging the connection 43 between the second roller 4141 and the bottom plate 4142 of the secondary groove 414, the lateral swing amplitude of the chain 43 can be restricted by the groove wall of the secondary groove 414, thereby reducing the probability of the chain 43 disengaging from the gear 42 to a certain extent, and the complete flying out of the chain 43 can be avoided, thereby enhancing the reliability and safety of the equipment to a certain extent.

[0030] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model by using the above-disclosed technical content without departing from the scope of the technical solution of the present utility model, or modify it into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall fall within the scope of the protection of the technical solution of the present utility model.

Claims

1. A tunnel steel cage working device with a longitudinal traction mechanism, comprising a carrier frame (1), a pair of arc-shaped tracks (2) fixed on the outer side of the carrier frame (1), and a drawing device (3) arranged on the arc-shaped tracks (2) and used to drive the steel bars to be arranged along the length direction of the tunnel to be arranged along the circumferential direction of the tunnel, characterized in that: It further includes a traction mechanism (4) fixed on the carrier (1) and used for dragging steel bars along the tunnel length direction.

2. The tunnel steel cage working equipment with a longitudinal traction mechanism according to claim 1, characterized in that: The traction mechanism (4) includes a support (41) connected to the carrier (1). The support (41) is arranged along the tunnel length direction, and a gear (42) is installed at each of its two ends. A chain (43) meshing with the gear (42) is sleeved on the gear (42). One end of the support (41) is also equipped with a motor (44). The output shaft of the motor (44) is fixed to the gear (42) at this end. The chain (43) is connected to a hanging piece (45) for pulling the steel bars.

3. The tunnel steel cage working equipment with a longitudinal traction mechanism according to claim 2, characterized in that: The support (41) includes a chute (411) with an open lower end and a slider (412) fitted and installed in the chute (411). The slider (412) is fixed to the chain (43) and is connected to the hanging piece (45) for pulling the steel bars.

4. The tunnel steel cage working equipment with a longitudinal traction mechanism according to claim 3, characterized in that: Baffles (4111) for preventing the slider (412) from slipping out are provided at both ends of the chute (411). Buffer blocks (4121) are arranged at both ends of the slider (412) along the tunnel length direction.

5. The tunnel steel cage working equipment with a longitudinal traction mechanism according to claim 3, characterized in that: Rollers (4122) are installed on the slider (412), and the slider (412) is in rolling contact with the chute (411).

6. The tunnel steel cage working equipment with a longitudinal traction mechanism according to claim 3, characterized in that: An installation frame (413) is provided at each of the two ends of the chute (411). A first roller (4131) is penetrated through the installation frame (413). The first roller (4131) is located below the chute (411). The chain (43) is penetrated between the first roller (4131) and the chute (411).

7. The tunnel steel cage working equipment with a longitudinal traction mechanism according to claim 2, characterized in that: The support (41) includes a secondary chute (414) with an open upper end. A number of second rollers (4141) are arranged at intervals along the tunnel length direction in the secondary chute (414). The chain (43) is penetrated between the second roller (4141) and the bottom plate (4142) of the secondary chute (414).

8. The tunnel steel cage working equipment with a longitudinal traction mechanism according to claim 1, characterized in that: The tunnel steel cage operation equipment further includes a connecting frame (5). One end of the connecting frame (5) is fixed to the carrier (1), and the other end is connected to the traction mechanism (4).

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