A new travel switch pulley assembly positioning and assembling device

Abstract

The utility model relates to the positioning installation field of pulley, concretely is a new type travel switch pulley assembly positioning assembly device. It includes guide fixed block 1, support seat 2, fastening bolt 3, guide fixed block 1 sets up in support seat 2 upside, the main body of guide fixed block 1 right end surface is the arc shape that protrudes right side, two mounting holes are seted up on guide fixed block 1, two threaded holes are seted up on support seat 2, the interval between two threaded holes on support seat 2 is equal with the interval between two mounting holes on guide fixed block 1, fastening bolt 3 passes two mounting holes on guide fixed block 1 and is screwed into the threaded hole on support seat 2, the utility model positions no. One limit block A and no. Two limit block B are positioned to the guide fixed block setting, convenient and fast and easy to check, make the assembly efficiency and assembly quality greatly improve.

Description

Technical Field

[0001] This utility model relates to the field of pulley positioning and installation, specifically a novel positioning and assembly device for limit switch pulley assemblies. Background Technology

[0002] A new type of limit switch (see instruction manual for details) Figure 1 The main components are a take-up reel and a limit switch. Under external force, the tension cable inside the take-up reel extends, and the limit switch moves to the designated position with the tension cable. After the external force is removed, the limit switch automatically retracts into the take-up reel under the action of the reel's spring. The take-up reel serves as the signal transmission component for the limit switch, ensuring reliable extension and automatic retraction of the tension cable. To reduce friction during cable movement and ensure flexible cable movement, the take-up reel's full-stroke force must not exceed 40N. A pulley assembly is designed and installed at the take-up reel outlet. The pulley assembly consists of a first limit block, a bearing, a second limit block, and a shaft (see the instruction manual for the pulley assembly structure). Figures 2-4 ).

[0003] The key assembly step for this cable take-up unit is ensuring that the pulley assembly, once installed, reduces friction during cable movement and meets the required parameters such as the full-stroke force. The conventional assembly method involves the assembler using a right-angle ruler to sequentially tighten the first limit block, bearing, and second limit block onto the shaft using nuts. However, this method is problematic because the first and second limit blocks require high positioning accuracy, and they are prone to rotation and misalignment during assembly. This makes it difficult to guarantee precise positioning of the first and second limit blocks, resulting in a low first-time assembly success rate, difficulty in inspection, and low assembly efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a novel positioning and assembly device for a limit switch pulley assembly, including a guide fixing block, a support base, and fastening bolts, wherein the guide fixing block is disposed on the upper side of the support base;

[0005] The main body of the right end face of the guide fixing block is an arc shape that bulges to the right.

[0006] The guide fixing block has two mounting holes.

[0007] As a preferred embodiment of this utility model, the support base has two threaded holes.

[0008] As a preferred embodiment of this utility model, the distance between the two threaded holes on the support base is equal to the distance between the two mounting holes on the guide fixing block.

[0009] As a preferred embodiment of this utility model, the fastening bolt passes through two mounting holes on the guide fixing block and is screwed into the threaded hole on the support base.

[0010] As a preferred embodiment of this utility model, an arc-shaped notch is provided at the middle position of the right end face of the guide fixing block.

[0011] As a preferred embodiment of this utility model, the support base is provided with fixing holes.

[0012] The beneficial effects of this utility model are as follows: First, this utility model uses guide fixing blocks to position the first limiting block and the second limiting block, which is convenient, quick and easy to inspect, thus greatly improving assembly efficiency and assembly quality. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a cross-sectional view of a new type of limit switch.

[0015] Figure 2 This is a front view of the pulley assembly.

[0016] Figure 3 This is a structural schematic diagram of the first limiting block.

[0017] Figure 4 This is a schematic diagram of the structure of the second limiting block.

[0018] Figure 5 This is a front view of the present invention.

[0019] Figure 6 This is a top view of the present invention.

[0020] Figure 7 This is a top view of the utility model in its working state.

[0021] In the diagram: 1. Fixing block; 2. Support base; 21. Fixing hole; 3. Fastening bolt; A. Limiting block No. 1; B. Limiting block No. 2; C. Bearing; D. Shaft; E. Nut; F. Tensile cable; G. Outlet seat; H. Pulley assembly. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below.

[0023] See Figures 5-7A novel positioning and assembly device for a limit switch pulley assembly includes a guide fixing block 1, a support base 2, and a fastening bolt 3. The guide fixing block 1 is disposed on the upper side of the support base 2. The main body of the right end face of the guide fixing block 1 is an arc shape protruding to the right. The guide fixing block 1 has two mounting holes. The support base 2 has two threaded holes. The distance between the two threaded holes on the support base 2 is equal to the distance between the two mounting holes on the guide fixing block 1. The fastening bolt 3 passes through the two mounting holes on the guide fixing block 1 and is screwed into the threaded holes on the support base 2. An arc-shaped notch is provided in the middle of the right end face of the guide fixing block 1. The support base 2 has a fixing hole 21.

[0024] This invention uses a guide fixing block 1 to position the first limiting block A and the second limiting block B, which is convenient, quick, and easy to inspect, thus greatly improving assembly efficiency and quality.

[0025] Specifically, when assembly is required, first insert the shaft D of the pulley assembly H into the fixing hole 21 of the support base 2, and then install the second limiting block B, the bearing C, and the first limiting block A on the shaft D in sequence. During installation, ensure that the outer arc of the guide fixing block 1 is in close contact with the inner arc notch of the first limiting block A and the second limiting block B, and that the inner arc notch of the guide fixing block 1 is in close contact with the outer circle of the bearing C. After accurately positioning the first limiting block A and the second limiting block B, tighten the nut E to achieve the positioning and installation of the pulley assembly H.

[0026] It should be noted that the fixing hole 21 and the shaft D of the pulley assembly H are clearance fit, and the depth of the fixing hole 21 is slightly longer than the length of the shaft D extension at the second limit block B.

[0027] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered by the protection scope of the present invention.

Claims

1. A novel positioning and assembly device for a limit switch pulley assembly, characterized in that, Includes guide fixing block (1), support base (2), and fastening bolt (3); The main body of the right end face of the guide fixing block (1) is an arc shape with a protrusion on the right side; The guide fixing block (1) has two mounting holes.

2. The novel limit switch pulley assembly positioning and assembly device according to claim 1, characterized in that, The support base (2) has two threaded holes.

3. The novel limit switch pulley assembly positioning and assembly device according to claim 2, characterized in that, The distance between the two threaded holes on the support base (2) is equal to the distance between the two mounting holes on the guide fixing block (1).

4. A novel positioning and assembly device for a limit switch pulley assembly according to claim 3, characterized in that, The fastening bolt (3) passes through the two mounting holes on the guide fixing block (1) and is screwed into the threaded hole on the support base (2).

5. A novel positioning and assembly device for a limit switch pulley assembly according to claim 1, characterized in that, An arc-shaped notch is provided at the middle position of the right end face of the guide fixing block (1).

6. A novel positioning and assembly device for a limit switch pulley assembly according to claim 1, characterized in that, The support base (2) has a fixing hole (21).

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