A rail vertical lifting clamp

Abstract

The present application provides a kind of steel rail vertical hoisting clamp, belongs to rail transit engineering construction tool technical field, to solve the problem that steel wire is easy to slip when steel rail is hoisted, safety risk is high, time-consuming is long, including clamp main body and two clamping blocks, the clamp main body center is provided with the accommodating channel that passes through bottom, the clamp main body top is provided with hoisting connecting piece, hoisting connecting piece is opened hoisting hole, the two side walls of accommodating channel are all set to form slide platform by recessing, two clamping blocks are symmetrically set in the two sides of accommodating channel and are slidably clamped on corresponding slide platform, and the clamping block top supports the head of steel rail.

Description

Technical Field

[0001] This invention belongs to the technical field of construction tools for rail transit engineering, and more specifically, it relates to a vertical rail hoisting clamp. Background Technology

[0002] During subway and national railway track laying construction, it is often necessary to vertically hoist individual rails for purposes such as vertical transport, shaft hoisting, and installation in special locations. Currently, the conventional practice on construction sites of directly binding the rail body with steel wire ropes for hoisting has the following drawbacks: 1. The friction coefficient between the wire rope and the rail head is small, making the wire rope prone to slippage during vertical lifting, which can lead to detachment in severe cases, resulting in extremely high safety risks during lifting operations; 2. Tying and untying the wire ropes takes a long time and requires multiple people to adjust the binding position, resulting in low hoisting efficiency. 3. The direct compression and friction of the wire rope against the working surface of the rail head can easily cause scratches and dents on the rail, resulting in surface defects that affect the safety of line operation.

[0003] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a vertical rail hoisting clamp in order to achieve a more practical purpose. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a vertical rail hoisting clamp.

[0005] The purpose and effect of the vertical lifting clamp for steel rails of this invention are achieved by the following specific technical means: A vertical rail hoisting clamp includes a clamp body and two clamping blocks. The clamp body has a receiving channel extending through the bottom at its center. A lifting connector is provided at the top of the clamp body, and a hoisting hole is provided on the lifting connector. The two side walls of the receiving channel are recessed to form sliding platforms. The two clamping blocks are symmetrically arranged on both sides of the receiving channel and are slidably locked onto the corresponding sliding platforms. The top of the clamping blocks supports the rail head.

[0006] Furthermore, the inner side of the clamping block forms a fitting part that hugs the rail body, and the top of the clamping block forms a guide part with an arc-shaped inclined surface.

[0007] Furthermore, a polyurethane anti-slip and wear-resistant pad layer is adhered to the inner side of the clamping block.

[0008] Furthermore, the lower end of the clamping block bends inward to form a limiting step, which is engaged within the corresponding slide.

[0009] Furthermore, the clamp body has horizontally opened locking holes on both sides, and a locking screw threadedly connected to the locking hole passes through the locking hole.

[0010] Furthermore, the lock hole sliding latch is provided with an elastic pressing member, and the locking screw pushes the elastic pressing member to abut against the clamping block.

[0011] Furthermore, the elastic extrusion member includes an end and a movable block, the movable block and the end are connected by a spring, the locking screw abuts against the movable block, and the end abuts against the clamping block.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The clamping block wraps around the rail head, and with the bottom limiting step for double limiting, the rail cannot slide down or move left or right during vertical lifting, eliminating the risk of unhooking from the root and greatly improving the safety of lifting. At the same time, it protects the surface of the rail and reduces scratches and bumps.

[0013] 2. Relying on the mechanical locking of the transverse locking screw, a single person can complete the clamping and disassembly work. The operation process is simple and significantly improves the efficiency of rail hoisting construction. Attached Figure Description

[0014] Figure 1 This is a perspective view of a vertical rail hoisting clamp according to the present invention.

[0015] Figure 2 This is a cross-sectional view of a vertical rail hoisting clamp according to the present invention.

[0016] Figure 3 This is a structural cross-sectional view of Embodiment 2.

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Fixture body; 2. Clamping block; 201. Limiting step; 202. Fitting part; 203. Guide part; 3. Locking hole; 4. Locking screw; 5. Lifting connector; 6. Lifting hole; 7. Receiving channel; 8. Slide table; 9. Movable block; 10. End; 11. Spring. Detailed Implementation

[0018] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0019] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Example: As attached Figure 1 To be continued Figure 2 As shown: This invention provides a vertical lifting clamp for rails, comprising a clamp body 1 made of block-shaped cast steel and two clamping blocks 2. The clamp body 1 has a receiving channel 7 extending through the bottom at its center. The two clamping blocks 2 are symmetrically arranged on both sides of the receiving channel 7. Locking holes 3 are laterally opened on both sides of the clamp body 1. Locking bolts 4 are threadedly connected to the locking holes 3. The locking bolts 4 are laterally inserted into the locking holes 3 and clamped to the clamping blocks 2.

[0022] The top of the clamp body 1 is provided with a lifting connector 5, and a lifting hole 6 is opened on the lifting connector 5. The lifting shackle passes through the lifting hole 6 to achieve lifting connection.

[0023] The inner side of the clamping block 2 forms a fitting part 202 that hugs the rail body. The top of the clamping block 2 forms a guide part 203 with an arc-shaped slope. Both the fitting part 202 and the guide part 203 are covered with polyurethane anti-slip and wear-resistant pads to prevent the hard steel structure from directly squeezing the rail, effectively protecting the working surface of the rail head and preventing damage to the finished product such as bumps and scratches.

[0024] The locking screw 4 pushes the clamping block 2 so that its contact part 202 contacts the rail body to prevent the rail from swaying left and right, while the guide part 203 supports the rail head. The two side walls of the receiving channel 7 are provided with recessed slides 8. The lower end of the clamping block 2 bends inward to form a limiting step 201. The limiting step 201 is locked in the corresponding slide 8. During hoisting and lifting, the slide 8 and the limiting step 201 prevent the clamping block 2 from sliding off the rail.

[0025] The curved slope of the guide section 203 can fit the bottom of the rail head and can also diagonally separate and transfer the vertical force to both sides of the clamp body 1 during the lifting process, so as to prevent the slide table 8 and the limiting step 201 from bearing the pressure alone.

[0026] The clamp body 1 has horizontally opened locking holes 3 on both sides. A locking screw 4 is threaded through the locking hole 3 and connected to it. The horizontally inserted locking screw 4 is clamped with the clamping block 2, so that the clamping block 2 clamps the rail body, preventing the rail from moving left and right, eliminating the risk of disengagement from the root, and greatly improving the safety of hoisting.

[0027] With fewer overall components and a compact structure, it has a moderate weight and is easy to transport and store on site. By changing the clamping blocks of different profiles and sizes, it can be adapted to various commonly used rail models such as 50kg / m and 60kg / m, making it highly versatile.

[0028] Example 2: The difference between this embodiment and Embodiment 1 is that the locking hole 3 is equipped with an elastic pressing member. The elastic pressing member includes an end 10 and a movable block 9. The movable block 9 and the end 10 are connected by a spring 11. The locking screw 4 abuts against the movable block 9, and the end 10 abuts against the clamping block 2. The locking screw 4 pushes the elastic pressing member to abut against the clamping block 2. The clamping block 2 has a gap with the rail in the receiving channel 7. The non-locking setting of the elastic pressing member allows the clamping block 2 to fit more closely to the rail, increasing the contact area between the clamping block 2 and the rail when lifting. At the same time, the compression of the spring is adjusted according to the weight of the rail, thereby changing the clamping force of the clamping block 2 on the rail.

[0029] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A vertical lifting clamp for steel rails, characterized in that: The fixture includes a main body (1) and two clamping blocks (2). The main body (1) has a receiving channel (7) that extends through the bottom. The top of the main body (1) is provided with a lifting connector (5). The lifting connector (5) has a lifting hole (6). The two side walls of the receiving channel (7) are provided with recessed slides (8). The two clamping blocks (2) are symmetrically arranged on both sides of the receiving channel (7) and are slidably locked on the corresponding slides (8). The top of the clamping blocks (2) supports the rail head.

2. The rail vertical lifting clamp as described in claim 1, characterized in that: The clamping block (2) has an inner side forming a fitting part (202) that hugs the rail body, and the top of the clamping block (2) has a guide part (203) with an arc-shaped slope.

3. The rail vertical lifting clamp as described in claim 1, characterized in that: The clamping block (2) has a polyurethane anti-slip and wear-resistant pad layer pasted on its inner side.

4. The rail vertical lifting clamp as described in claim 1, characterized in that: The lower end of the clamping block (2) bends inward to form a limiting step (201), which is locked in the corresponding slide (8).

5. The rail vertical lifting clamp as described in claim 1, characterized in that: The clamp body (1) has horizontally opened locking holes (3) on both sides, and a locking screw (4) threadedly connected to the locking hole (3) is inserted in the locking hole (3).

6. The rail vertical lifting clamp as described in claim 5, characterized in that: The lock hole (3) is slidably fitted with an elastic extrusion member, and the locking screw (4) pushes the elastic extrusion member to abut against the clamping block (2).

7. A vertical rail hoisting clamp as described in claim 6, characterized in that: The elastic extrusion member includes an end (10) and a movable block (9), which are connected by a spring (11). The locking screw (4) abuts against the movable block (9), and the end (10) abuts against the clamping block (2).

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