CN-122014306-A - Lifting point device and anchor cable installation system

CN122014306ACN 122014306 ACN122014306 ACN 122014306ACN-122014306-A

Abstract

The invention belongs to the field of tunnel support, and particularly provides a lifting point device and an anchor cable installation system. The device comprises a main body, wherein a pulley, a retaining mechanism and a locking mechanism are assembled on the main body, the retaining mechanism comprises a retaining tongue, and the retaining tongue can be ejected and clamped on the wall of an anchor rope hole. The locking mechanism is used for locking the retaining tongue at an initial position and specifically comprises a pressing cap capable of axially moving relative to the main body, a spring for enabling the pressing cap to keep a locking position is connected between the main body and the pressing cap, and the front end of the pressing cap can be contacted with the bottom of an anchor cable hole to be pressed to an unlocking position. The system comprises a winch and the device. In the invention, the retaining tongue configured by the lifting point device can automatically and linearly pop up to clamp the hole wall of the anchor cable hole once unlocked, and the anchor cable hole with a reaming section does not need to be drilled in actual construction.

Inventors

WANG NING
SHAO YANG
CHEN YIFEI
FU ZENG
WANG QUANSHENG
JIA ZHENGWEN
BAI ZHONGKUN

Assignees

中铁工程装备集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260227

Claims (11)

1. The lifting point device is characterized by comprising a main body, wherein pulleys, a retaining mechanism and a locking mechanism are assembled on the main body, the retaining mechanism comprises more than two retaining tongues which are arranged at intervals according to a set angle, the retaining tongues can be assembled on the main body in a direct-acting manner, an inner retraction position and a retaining position which can be clamped in an anchor rope hole are arranged in the moving stroke of the retaining tongues, a spring which drives the retaining tongues to move from the inner retraction position to the retaining position is connected between the main body and the retaining tongues, the locking mechanism comprises a pressing cap which can axially move relative to the main body, the pressing cap is connected with locking hooks which respectively correspond to the retaining tongues, a hooking part is arranged on the retaining tongues, a locking position which enables the locking tongues to be hooked with the hooking part and an unlocking position which enables the locking hooks to be separated from the hooking part are arranged in the moving stroke of the pressing cap, a spring which enables the pressing cap to keep the locking position is connected between the main body and the pressing cap, and the front end of the pressing cap can be contacted with the bottom of the anchor rope hole to be pressed to the unlocking position.
2. The lifting point device according to claim 1, wherein the main body is provided with a guide hole, the retaining tongue is assembled in the guide hole, the spring for driving the retaining tongue to move from the retracted position to the retaining position is a pressure spring arranged in the guide hole, and the pressure spring is released to drive the retaining tongue to pop out and be clamped in the anchor cable hole.
3. A lifting point device according to claim 1 or 2, wherein the retaining tongue is adapted to engage an end of the anchor line bore and is provided with a cutting edge arrangement.
4. The lifting point device according to claim 1 or 2, wherein the hooking portion is a tooth structure provided on the retaining tongue.
5. The lifting point device according to claim 1 or 2, wherein the main body is connected with a guide sleeve, the pressing cap is assembled on the guide sleeve in a guide way, the main body is provided with a spring mounting hole, the spring for enabling the pressing cap to keep the locking position is a pressure spring arranged in the spring mounting hole, the pressure spring can push the pressing cap to keep the locking position, and the pressing cap is provided with an anti-falling boss for preventing the pressing cap from falling off the guide sleeve.
6. The lifting point device according to claim 5, wherein the guide sleeve is a spliced structure formed by splicing two or more split blocks, and the split blocks are jointly enclosed to form a sleeve structure wrapped outside the pressing cap.
7. A lifting point device according to claim 1 or claim 2, wherein the front end of the press cap is of a tapered tip configuration.
8. A hoisting point apparatus as claimed in claim 1 or 2, wherein the rear end of the main body is provided with a recess in which the pulley is fitted, and a rope passage is provided in a side wall of the recess for passage of a traction rope of the hoist.
9. The lifting point device of claim 8, wherein the rope-threading channels are provided in two groups, each group consisting of two diametrically opposed rope-threading channels.
10. An anchor cable installation system comprising a hoist and a hoisting point device, wherein the hoisting point device is a hoisting point device as claimed in any one of claims 1 to 9, and a traction rope of the hoist is capable of passing around a pulley of the hoisting point device and connecting to the front end of the anchor cable.
11. The cable installation system of claim 10, wherein the hoist is provided with a torque sensor for monitoring the torque of the spool thereof to determine if the cable is installed in place based on the torque sensor value.

Description

Lifting point device and anchor cable installation system Technical Field The invention belongs to the field of tunnel support, and particularly relates to a lifting point device and an anchor cable installation system. Background When a tunnel is constructed, primary support is a key procedure for ensuring safe construction. The mode that the preliminary bracing was used includes anchor bolt support, anchor rope support, bow member support etc. wherein the anchor rope support is as initiative supporting hand section, is applicable to broken country rock, large-span tunnel, stratum such as soft rock, specifically when being under construction, including boring the step of boring anchor rope hole and loading into the anchor rope hole with the anchor rope. In order to solve the problem of low anchor cable installation efficiency, in the related art, the invention patent application with the application publication number of CN109944241A discloses an anchor cable hole bottom reverse traction device, the device comprises a base, a fixed pulley and a barb mechanism are arranged on the base, the base can be arranged at the bottom of an anchor cable hole, the barb mechanism comprises a steel pin and a spring, one end of the steel pin is hinged on the base, and the other end of the steel pin extends out of the base. The fixed pulley can be used for winding a traction rope of the traction mechanism, one end of the traction rope is connected with the front end of the anchor rope, and the other end of the traction rope is connected with external power (human or machinery). During construction, the anchor cable hole needs to be drilled first, the tail end of the anchor cable hole needs to be reamed, then the device is pushed into the anchor cable hole, in the pushing process, the steel pin is pushed by the wall thrust of the anchor cable hole and is folded towards the base, the spring is compressed, when the device is pushed to the reaming section at the bottom of the anchor cable hole, under the action of the spring, the steel pin can be opened and clamped on the step of the reaming section, and a lifting point is provided, so that the device can be essentially called as a lifting point device. The external power controls the rope collecting, and the anchor rope can be pulled to the bottom of the hole from the hole. Although the above-mentioned traction device is simpler in structure, but in order to ensure that the traction device can be reliably fixed at the bottom of an anchor cable hole, a reaming section is required to be drilled out of the anchor cable hole, and the drilling difficulty of the anchor cable hole can be increased. Disclosure of Invention The invention aims to provide a lifting point device which adopts a brand new conception to solve the problem of anchor cable installation efficiency under the condition of not increasing the difficulty of drilling anchor cable holes. The invention also aims to provide an anchor cable installation system which adopts the lifting point device and is used for solving the problem of low anchor cable installation efficiency. In order to achieve the above purpose, the technical scheme of the lifting point device provided by the invention is as follows: The utility model provides a hoisting point device, including the main part, be equipped with the pulley on the main part, retaining mechanism and locking mechanism, retaining mechanism includes more than two retaining tongues according to setting angle interval arrangement, retaining tongue can directly move the assembly on the main part, retaining tongue removes the stroke in have interior receipts position and can block the retaining position in the anchor rope hole, be connected with the spring that drives retaining tongue and remove from interior receipts position to retaining position between main part and the retaining tongue, locking mechanism includes can be relative main part axial displacement's pressure cap, the pressure cap is connected with the latch hook that corresponds with each retaining tongue respectively, be equipped with the hook portion on the retaining tongue, have in the pressure cap removal stroke and make latch hook and hook portion hook locking retaining tongue in the locking position and make latch hook and the unblock position of hook portion separation, be connected with the spring that makes the pressure cap keep the locking position between main part and the pressure cap, the pressure cap front end can be pressed to the unblock position with anchor rope hole bottom contact. As a further improvement, a guide hole is arranged on the main body, the retaining tongue is assembled in the guide hole, the spring driving the retaining tongue to move from the inner retracted position to the retaining position is a pressure spring arranged in the guide hole, and the pressure spring is released to drive the retaining tongue to pop out and be clamped in the anchor cable hole. As a further improvement,