Limiting device of guide pipe pouring platform

Abstract

The utility model relates to the technical field of underground diaphragm wall pouring, and provides a limiting device of a guide pipe pouring platform, which comprises a tension sensor arranged on a cross beam, a lifting rope connected to the tension sensor and a counterweight part connected with the lower end of the lifting rope, the tension sensor is electrically connected to a controller, the controller is electrically connected to a winch, and the winch is electrically connected to the lifting rope. And the counterweight piece is sleeved on the steel wire rope. The winch has the beneficial effects that the situation that the movable pulley block collides with the cross beam to affect subsequent use is reduced, and the possibility that the steel wire rope is broken after the winch works continuously is reduced.

Description

Technical Field

[0001] This application relates to the technical field of diaphragm wall casting, and in particular to a limiting device for a duct casting platform. Background Technology

[0002] Diaphragm walls are a type of deep foundation pit support structure. Their construction process generally includes multiple stages such as constructing the guide wall, excavation, sludge removal and wall cleaning, joint placement, reinforcement cage placement, insertion of the tremie pipe, and concrete pouring. Each step directly affects the stability and safety of the entire project. The installation and dismantling of the concrete tremie pipe requires auxiliary equipment, commonly a pouring platform. Figure 1 As shown, it typically includes a base, a mounting bracket on the base, a winch on one side of the mounting bracket, a crossbeam on the upper end of the mounting bracket, a movable pulley block below the crossbeam, and a wire rope connecting the movable pulley block and the winch. The crossbeam is equipped with a first pulley for the wire rope to slide and connect. Its essence is to use the winch in combination with the first pulley block to realize the lifting and lowering of the conduit, thereby achieving the purpose of assembling and disassembling the conduit.

[0003] The main problem with the use of the pouring platform during construction is that the start and stop of the pouring platform winch are manually controlled. If the operator does not stop the winch in time during the lifting of the guide pipe, the pulley block may collide with the crossbeam, affecting subsequent use. In severe cases, excessive tension may even cause the wire rope to break. Therefore, further improvements are needed. Utility Model Content

[0004] To address the above problems, this application provides a limiting device for a conduit casting platform.

[0005] The limiting device for a conduit casting platform provided in this application adopts the following technical solution:

[0006] A limiting device for a conduit casting platform includes a tension sensor mounted on a crossbeam, a lifting rope connected to the tension sensor, and a counterweight connected to the lower end of the lifting rope. The tension sensor is electrically connected to a controller, the controller is electrically connected to a winch, and the counterweight is sleeved on the wire rope.

[0007] By adopting the above technical solution, as the winch starts, it winds up the wire rope to drive the movable pulley block to rise and come into contact with the counterweight, thereby lifting the counterweight and changing the tension generated when the counterweight is pulled by the hoisting rope. After the tension is reduced, the corresponding data is transmitted to the controller for information processing, and then relevant instructions are sent to the winch to cut off the power to the winch, thereby stopping the rise of the wire rope and the movable pulley block. This reduces the possibility of the movable pulley block colliding with the crossbeam, affecting subsequent use, or causing the wire rope to break due to continuous operation of the winch.

[0008] Preferably, the end of the counterweight away from the wire rope is inclined downwards, and the end of the counterweight close to the wire rope is the abutting end, used to abut against the wire rope.

[0009] By adopting the above technical solution, the duct casting platform will experience some swaying during the hoisting of the duct. This swaying will be transmitted to the limiting device, causing it to sway as well. Therefore, the end of the reinforcing counterweight furthest from the wire rope is inclined downwards, making the counterweight eccentrically positioned. This reduces the possibility of large changes in tension caused by swaying, which could lead to the winch stopping. The eccentric positioning of the counterweight also prevents excessive friction between the counterweight and the wire rope, thus reducing the possibility of the counterweight being lifted due to excessive friction, which could affect the normal operation of the winch.

[0010] Preferably, the lifting rope includes a first lifting rope and a second lifting rope, the first lifting rope being connected to the abutting end of the counterweight, and the second lifting rope being connected to the end of the counterweight away from the wire rope.

[0011] Preferably, the tension sensor is located at the end of the crossbeam away from the winch.

[0012] By adopting the above technical solution, since the limiting device is installed on the existing conduit pouring platform, it is installed at the end of the crossbeam away from the winch for ease of installation.

[0013] Preferably, the wire rope includes a first section connected to the crossbeam, a second section opposite to the first section, and a third section passing through the crossbeam to connect with the winch. The counterweight, tension sensor, and hoisting rope may be located on the side of the first section away from the second section, and the second section passes through the counterweight.

[0014] By adopting the above technical solution, when the limiting device is located on the side of the second section away from the first section, if the friction is too high when the winch is working to move the second section upward, it may cause the counterweight to rise, thus affecting the normal operation of the winch. Alternatively, the limiting device can be located on the side of the first section away from the second section. Since the first section is stationary relative to the second section, the occurrence of the above situation can be reduced.

[0015] Preferably, the counterweight has a first through groove in the middle for the steel wire rope to pass through vertically, and a second through groove on the side wall for the steel wire rope to pass through horizontally. The second through groove is connected to the first through groove, and the counterweight is provided with an opening and closing device for opening and closing the second through groove.

[0016] By adopting the above technical solution, and by setting a second through groove and an opening and closing component, the limiting device can be installed on the crossbeam, thereby reducing the operation and time required to untie the wire rope and disassemble the movable pulley block from the wire rope.

[0017] Preferably, the counterweight includes two arc-shaped plates arranged in an arc shape, one end of the two arc-shaped rings is hinged, and the opening and closing component includes two mounting plates respectively disposed at the free ends of the two arc-shaped rings, bolts passing through the two mounting plates, and nuts threadedly connected to the bolts.

[0018] By adopting the above technical solution, the two arc-shaped plates are hinged at one end and connected by a bolt and nut mechanism, which facilitates the installation and disassembly of the counterweight and allows for flexible adjustment of its position on the wire rope.

[0019] Preferably, the bolt is coaxially fitted with a second pulley, and the wire rope is threaded through the second pulley.

[0020] By adopting the above technical solution, a second pulley is coaxially fitted on the bolt and the wire rope is threaded through the second pulley. This reduces the friction between the wire rope and the counterweight, allowing the wire rope to move more smoothly, reducing obstruction during the lifting process of the guide tube, and reducing the possibility that excessive friction between the counterweight and the wire rope could cause the counterweight to rise and affect the normal operation of the winch.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. By installing a tension sensor on the crossbeam, a suspension rope connected to the tension sensor, and a counterweight connected to the lower end of the suspension rope and sleeved on the wire rope, when the movable pulley block rises to abut against the counterweight, the counterweight is lifted. After the tension decreases, the corresponding data is transmitted to the controller for information processing, and then relevant instructions are sent to the winch to cut off the power to the winch, thereby stopping the rise of the wire rope and the movable pulley block. This reduces the possibility of the movable pulley block colliding with the crossbeam, affecting subsequent use, or causing the wire rope to break due to continuous operation of the winch.

[0023] 2. Set the counterweight at an angle with the end furthest from the wire rope pointing downwards, and the end closest to the wire rope as the contact end, so that the counterweight can continuously rest against the wire rope by its own weight, reducing the swaying of the counterweight. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure in the prior art;

[0025] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of this application;

[0026] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0027] Figure 4 This is a schematic diagram of the structure in Embodiment 1 of this application, showing the limiting device disposed on the side of the second segment away from the first segment;

[0028] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Base; 11. Mounting bracket; 12. Winch; 13. Crossbeam; 131. First pulley; 14. Moving pulley block; 15. Wire rope; 151. First section; 152. Second section; 153. Third section; 2. Tension sensor; 3. Lifting rope; 31. First lifting rope; 32. Second lifting rope; 33. Buckle; 4. Counterweight; 41. First through slot; 42. Through ring; 43. Second through slot; 44. Opening and closing component; 441. Mounting plate; 442. Bolt; 443. Nut; 45. Arc plate; 5. Second pulley. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail below.

[0031] This application discloses a limiting device for a conduit casting platform.

[0032] Example 1:

[0033] A limiting device for a conduit casting platform, referring to Figure 2 , Figure 3 The limiting device includes a tension sensor 2 mounted on the crossbeam 13, a suspension rope 3 connected to the tension sensor 2, and a counterweight 4 connected to the lower end of the suspension rope 3. In this embodiment, the tension sensor 2 is electrically connected to a controller (not shown in the figure), the controller is electrically connected to a winch 12, and the counterweight 4 is sleeved on the wire rope 15.

[0034] It should be noted that, regarding the installation position of the limiting device, since the wire rope 15 specifically includes a first section 151 connected to the crossbeam 13, a second section 152 wound around the movable pulley block 14 and positioned opposite to the first section 151, and a third section 153 passing through the crossbeam 13 and connected to the winch 12, the limiting device can be installed on the side of the first section 151 away from the second section 152, such as... Figure 2 , Figure 3 As shown, the tension sensor 2 is positioned at the end of the crossbeam 13 furthest from the mounting bracket 11, specifically fixed to the end of the crossbeam 13 furthest from the mounting bracket 11 by bolts 442, for easy installation, disassembly, and replacement. Alternatively, it can be... Figure 4As shown, the limiting device is set on the side of the second section 152 away from the first section 151, that is, on the relatively stationary end of the wire rope 15, in order to reduce the possibility of excessive friction causing the counterweight 4 to rise and affect the normal operation of the winch 12.

[0035] The suspension rope 3 specifically includes a first suspension rope 31 and a second suspension rope 32. The upper ends of the first suspension rope 31 and the second suspension rope 32 are both fixedly connected to the lower end of the tension sensor 2. The other end of the first suspension rope 31 is fixedly connected to the abutting end of the counterweight 4. The other end of the second suspension rope 32 is connected to the end of the counterweight 4 away from the wire rope 15. The two ends of the first suspension rope 31 and the second suspension rope 32 can be fixed by buckles 33.

[0036] In this embodiment, the counterweight 4 can be a ring. The middle of the counterweight 4 has a first through-groove 41 for the steel wire rope 15 to pass through vertically, so that the counterweight 4 is fitted onto the steel wire rope 15. The length of the counterweight 4 in the longitudinal direction is greater than the distance between the tension sensor 2 and the steel wire rope 15. The end of the counterweight 4 away from the steel wire rope 15 is inclined downwards, and the end of the counterweight 4 near the steel wire rope 15 is the abutting end, used to abut against the steel wire rope 15. Two through-rings 42 are fixedly connected to the two ends of the counterweight 4 in the longitudinal direction, for the first lifting rope 31 and the second lifting rope 32 to pass through.

[0037] The implementation principle of the limiting device for a conduit casting platform in this application embodiment is as follows: As the winch 12 starts, the wire rope 15 is wound up to drive the movable pulley block 14 to rise and come into contact with the counterweight 4, thereby lifting the counterweight 4 and changing the tension generated when the counterweight 4 is pulled by the hoisting rope 3. After the tension is reduced, the corresponding data is transmitted to the controller for information processing and then a relevant command is issued to the winch 12 to cause the winch 12 to be powered off, thereby stopping the rise of the wire rope 15 and the movable pulley block 14, reducing the possibility of the movable pulley block 14 colliding with the crossbeam 13, affecting subsequent use, or causing the wire rope 15 to break due to continuous operation of the winch 12.

[0038] Example 2:

[0039] Reference Figure 5 The difference from Embodiment 1 is that the counterweight 4 has a second through groove 43 on its side wall for the steel wire rope 15 to pass through laterally. The second through groove 43 is connected to the first through groove 41. The counterweight 4 is provided with an opening and closing member 44 for opening and closing the second through groove 43. The counterweight 4 includes two arc-shaped plates 45, one end of which is hinged. The opening and closing member 44 includes two mounting plates 441 respectively disposed at the free ends of the two arc-shaped rings, bolts 442 passing through the two mounting plates 441, and nuts 443 threadedly connected to the bolts 442, so as to install the counterweight 4 onto the steel wire rope 15.

[0040] Furthermore, in order to reduce the friction between the counterweight 4 and the wire rope 15, the bolt 442 is coaxially fitted with a second pulley 5, and the wire rope 15 passes through the second pulley 5.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A limiting device for a conduit casting platform, characterized in that: It includes a tension sensor (2) installed on a crossbeam (13), a hoisting rope (3) connected to the tension sensor (2), and a counterweight (4) connected to the lower end of the hoisting rope (3). The tension sensor (2) is electrically connected to a controller, the controller is electrically connected to a winch (12), and the counterweight (4) is sleeved on a wire rope (15).

2. The limiting device for a conduit casting platform according to claim 1, characterized in that: The counterweight (4) is inclined downward at the end away from the wire rope (15), and the end of the counterweight (4) close to the wire rope (15) is the abutting end, which is used to abut against the wire rope (15).

3. The limiting device for a conduit casting platform according to claim 1, characterized in that: The hoisting rope (3) includes a first hoisting rope (31) and a second hoisting rope (32). The first hoisting rope (31) is connected to the abutting end of the counterweight (4), and the second hoisting rope (32) is connected to the end of the counterweight (4) away from the wire rope (15).

4. The limiting device for a conduit casting platform according to claim 1, characterized in that: The tension sensor (2) is located at the end of the crossbeam (13) away from the winch (12).

5. The limiting device for a conduit casting platform according to claim 2, characterized in that: The wire rope (15) includes a first section (151) connected to the crossbeam (13), a second section (152) opposite to the first section (151), and a third section (153) passing through the crossbeam (13) and connected to the winch (12). The counterweight (4), the tension sensor (2), and the hoisting rope (3) may be located on the side of the first section (151) away from the second section (152), and the second section (152) passes through the counterweight (4).

6. The limiting device for a conduit casting platform according to claim 2, characterized in that: The counterweight (4) has a first through groove (41) in the middle for the steel wire rope (15) to pass through vertically, and a second through groove (43) is provided on the side wall of the counterweight (4) for the steel wire rope (15) to pass through horizontally. The second through groove (43) is connected to the first through groove (41), and the counterweight (4) is provided with an opening and closing member (44) for opening and closing the second through groove (43).

7. The limiting device for a conduit casting platform according to claim 6, characterized in that: The counterweight (4) includes two arc-shaped plates (45) arranged in an arc shape, one end of the two arc rings is hinged, and the opening and closing component (44) includes two mounting plates (441) respectively arranged at the free ends of the two arc rings, bolts (442) passing through the two mounting plates (441), and nuts (443) threadedly connected to the bolts (442).

8. The limiting device for a conduit casting platform according to claim 7, characterized in that: The bolt (442) is coaxially fitted with a second pulley (5), and the wire rope (15) is threaded through the second pulley (5).

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