Wrench for load-retaining adjustable head of steel support

Abstract

The utility model discloses a wrench for a steel support load-retaining adjustable head, which comprises a mounting seat and a grip fixedly connected with the mounting seat, a movable head is arranged at the front end of the grip and connected with the mounting seat through a telescopic structure, lip plates are arranged on one side of the movable head opposite to the grip, and the two lip plates are arranged in parallel. Lip teeth are detachably connected to the opposite sides of the two lip plates, each lip tooth is of a cylindrical structure, and a plurality of diameter specifications of the lip teeth are selected. The distance between the two lip plates is adjusted by rotating the threaded sleeve and through the threads between the threaded sleeve and the threaded rod, the adjustable head is arranged between the two lip plates, the threaded sleeve is adjusted again to enable the two lip plates to be close to each other, and the lip teeth are aligned with the load-holding bolt holes in the adjustable head and inserted into the load-holding bolt holes, so that limiting is achieved when the grip is rotated, and the adjustable head is convenient to use. And moreover, the lip teeth can be replaced by various different diameter specifications so as to be matched with adjustable head load-holding bolt holes with different hole diameters, so that the adjustable head load-holding bolt hole clamping device has relatively good applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a wrench for a steel support load-keeping movable head. Background Art

[0002] Steel bracing, a common form of internal support, is widely used due to its light weight, ease of installation, high factory-manufactured quality control, rapid and efficient construction, easy dismantling and recycling, and high cost-effectiveness. However, in actual use, steel bracing systems suffer from localized weakening, making it difficult to maintain stable axial force and thus unable to provide effective support for the retaining structure. This impacts their bearing capacity and safety to varying degrees, and can easily cause excessive deformation in the foundation pit, even leading to a chain reaction and ultimately to pit collapse. This localized weakening primarily includes surface quality issues with flexible joints, steel enclosures, ground-connected walls, and crown beams, embedded steel plates, sudden changes in the cross-section of axial force gauges, and diagonal bracing shear structures.

[0003] During steel support construction, the retaining bolts of the load-holding joints often fail to tighten properly due to rust on the screws or damage to the threads during installation. This can cause an increase in the frequency of foundation pit monitoring alarms and, in severe cases, lead to pit collapse and steel support fall. Therefore, ensuring the tightening of the retaining bolts is a key measure to improve the safety and quality of deep foundation pit construction.

[0004] Due to the wide variety of steel support models and types, the diameter, size, and position of the retaining bolts of the retaining bolts are different. Due to the tooth lip spacing, the size of the ordinary wrench is limited. During the tightening process of the retaining bolts, it is often impossible to ensure the tightening degree of the bolts and there may be a risk of damage to the retaining bolts. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a wrench for a steel support load-keeping movable head.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A wrench for a steel support load-carrying movable head comprises a mounting base and a handle fixedly connected thereto. A movable head is provided at the front end of the handle, which is connected to the mounting base via a telescopic structure. Lip plates are provided on the side opposite to the movable head and the handle. The two lip plates are arranged in parallel, and the opposite sides of the two lip plates are detachably connected with lip teeth. The lip teeth are cylindrical in structure, and the lip teeth have several diameter specifications to choose from.

[0008] Preferably, the telescopic structure includes a threaded rod connected to the movable head, a threaded sleeve is threadedly connected to the threaded rod, a through opening corresponding to the threaded sleeve is provided on the mounting seat, and a symmetrically arranged flat structure is provided on the threaded rod.

[0009] Preferably, the lip plate is provided with a threaded hole corresponding to the lip tooth, and the lip tooth is threadedly connected with the threaded hole.

[0010] Preferably, a handle extension sleeve is sleeved on the handle.

[0011] Preferably, the handle extension sleeve is provided with an anti-skid structure.

[0012] Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses through the rotation threaded sleeve, the adjustment of the interval between two lip plates is realized through the thread between the threaded sleeve and the threaded rod, the loose joint is arranged between the two lip plates, the threaded sleeve is adjusted again, the two lip plates are close, and the lip tooth is inserted into the retaining bolt hole on the loose joint in alignment, so that the limiting is realized when the handle is rotated, the relative rotation of the two is prevented, and the lip tooth can be replaced by a plurality of different diameter specifications to match the retaining bolt hole of the loose joint of different hole diameters, and the utility model has good applicability. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more specifically and intuitively illustrate the technical scheme in the embodiment of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below.

[0014] Figure 1 Structure diagram of the utility model Figure 1 ;

[0015] Figure 2 Structure diagram of the utility model Figure 2 ;

[0016] Figure 3 Structure diagram of the utility model and the loose joint connection

[0017] Figure 4 Structure diagram of the handle extension sleeve of the utility model.

[0018] In the drawing: handle 1, mounting seat 2, threaded sleeve 3, threaded rod 4, movable head 5, lip plate 6, lip tooth 7, handle extension sleeve 8. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0020] Reference Figures 1-4The utility model provides a spanner for steel support keeps live knuckle head, including mounting seat 2 and with its fixed connection handle 1, the front end of handle 1 is provided with movable head 5, movable head 5 is connected with mounting seat 2 through telescopic structure, and the opposite side of movable head 5 and handle 1 is provided with lip plate 6, two lip plates 6 are parallelly arranged, and the opposite side of two lip plates 6 is detachably connected with lip tooth 7, and lip tooth 7 is cylindrical structure, and lip tooth 7 has a plurality of diameter specification selection.

[0021] By rotating threaded sleeve 3, the adjustment of the distance between the two lip plates 6 is realized through the thread between the threaded sleeve 3 and the threaded rod 4, the live knuckle head is placed between the two lip plates 6, the threaded sleeve 3 is adjusted again, the two lip plates 6 are close to each other, and the lip tooth 7 is aligned with and inserted into the live knuckle head bolt hole, so as to ensure that the limit is realized when the handle 1 is rotated, and the relative rotation of the two is prevented, and the lip tooth 7 can be replaced with a plurality of different diameter specifications to match the live knuckle head bolt hole of different hole diameters, and has good applicability.

[0022] In the embodiment, the telescopic structure includes a threaded rod 4 connected to the movable head 5, a threaded sleeve 3 threadedly connected to the threaded rod 4, a through hole corresponding to the threaded sleeve 3 provided on the mounting seat 2, and a flat structure symmetrically provided on the threaded rod 4.

[0023] In the embodiment, the lip plate 6 is provided with a threaded hole corresponding to the lip tooth 7, and the lip tooth 7 is threadedly connected to the threaded hole, which facilitates disassembly and replacement.

[0024] In the embodiment, the handle 1 is sleeved with a handle extension sleeve 8, and the handle extension sleeve 8 is provided with an anti-slip structure. By extending the length, a greater torque is provided.

[0025] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered within the protection scope of the utility model.

Claims

1. A wrench for a steel support locking clevis, comprising a mounting seat (2) and a handle (1) fixedly connected thereto, characterized in that, The front end of the handle (1) is provided with a movable head (5), the movable head (5) is connected with the mounting seat (2) through a telescopic structure, the opposite side of the movable head (5) and the handle (1) is provided with a lip plate (6), the two lip plates (6) are arranged in parallel, and the opposite side of the two lip plates (6) is detachably connected with a lip tooth (7), the lip tooth (7) is a cylindrical structure, and the lip tooth (7) has a plurality of diameter specifications.

2. A wrench for a steel support load retaining clevis according to claim 1, wherein, The telescopic structure comprises a threaded rod (4) connected with the movable head (5), a threaded sleeve (3) is threadedly connected on the threaded rod (4), a through hole corresponding to the threaded sleeve (3) is arranged on the mounting seat (2), and the threaded rod (4) is provided with symmetrically arranged flat structures.

3. A wrench for a steel support load retaining clevis according to claim 2, wherein, The lip plate (6) is provided with a threaded hole corresponding to the lip tooth (7), and the lip tooth (7) is threadedly connected with the threaded hole.

4. A wrench for a steel support load retaining clevis according to claim 3, wherein, The handle (1) is slidably sleeved with a handle extension sleeve (8).

5. A wrench for a steel support load retaining clevis according to claim 4, wherein, The handle extension sleeve (8) is provided with an anti-skid structure.

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