Safety tongs and guide rail gap inspection tool

By designing a safety clamp and rail gap inspection tool containing narrow and wide sections, the problems of low efficiency and high labor cost of safety clamp and rail gap inspection are solved, and a fast and simplified inspection process is achieved and labor cost is reduced.

CN223138559UActive Publication Date: 2025-07-22HITACHI ELEVATOR CHINA
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Patent Information

Application Number
CN202422387204.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2025-07-22
Estimated Expiration
2034-09-29

AI Technical Summary

Technical Problem

In the prior art, the safety clamp and rail clearance inspection process is inefficient, labor costs are high, and limited by operating space and complex steps.

Method used

A safety clamp and guide rail gap inspection tool is designed, including a inspection end and a handheld end. The inspection end has a narrow section and a wide section, which is used to cooperate with the safety clamp and wedge respectively. It can determine whether the gap meets the standards by matching the narrow section and wide section. It has a simple structure and is easy to operate.

Benefits of technology

It realizes the rapid inspection of the gap between the safety clamp and the rail without being restricted by space, reducing labor costs and improving inspection efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a safety tongs and guide rail clearance inspection tool, which comprises an inspection end and a handheld end, the inspection end comprises a narrow section and a wide section, and a centering inspection step matched with the bottom of a jaw of the safety tongs and a wedge block clearance inspection step matched with the bottom of a wedge block are arranged between the narrow section and the wide section. The centering inspection step and the wedge block gap inspection step are located on adjacent surfaces, the opposite surface of the centering inspection step is a first guide rail attaching surface, the opposite surface of the wedge block gap inspection step is a second guide rail attaching surface, and the first guide rail attaching surface and the second guide rail attaching surface are both planes. The device has the advantages that the device is simple and reliable; the inspection work can still be quickly completed without space limitation; when being contacted with a human body, the device is convenient to carry; the structure is simple, functions are diversified, inspection steps are simplified, inspection efficiency is improved, and labor cost is reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of elevator installation and maintenance, in particular to an inspection tool. Background Art

[0002] To ensure the smooth and safe operation of the elevator car, there are specified clearance standard requirements for the clearance between the jaws of the safety clamp and the guide rail, and between the wedge block and the guide rail. During installation and maintenance, tools are needed to accurately inspect the clearance. However, during the actual inspection and adjustment process of installation and maintenance, due to factors such as the structure of the on-site safety clamp and the operating space, when using a ruler for measurement, the operating space is small and the operating steps are complex, resulting in a long inspection working hour and low efficiency, and thus a high labor cost. Therefore, it is very necessary to design a special clearance inspection tool to simplify the inspection process and improve the inspection efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a clearance inspection tool for the safety clamp and the guide rail to solve the problems of low efficiency and high labor cost in the inspection process of the clearance between the safety clamp and the guide rail.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A clearance inspection tool for the safety clamp and the guide rail includes an inspection end and a handheld end. The inspection end includes a narrow section and a wide section. Between the narrow section and the wide section, there are a centering inspection step matching the bottom of the jaws of the safety clamp and a wedge block clearance inspection step matching the bottom of the wedge block. The centering inspection step and the wedge block clearance inspection step are located on adjacent surfaces. The opposite surface of the centering inspection step is the first guide rail contact surface, and the opposite surface of the wedge block clearance inspection step is the second guide rail contact surface. Both the first guide rail contact surface and the second guide rail contact surface are flat surfaces.

[0006] Further, when the installation clearance between the jaws of the safety clamp and the guide rail meets the standard requirements, the narrow section can enter the installation clearance between the safety clamp and the guide rail, the centering inspection step cooperates with the bottom of the jaws of the safety clamp, and the first guide rail contact surface is attached to the guide rail, while the wide section cannot enter the installation clearance between the safety clamp and the guide rail.

[0007] Further, when the installation clearance between the wedge block and the guide rail meets the standard requirements, the narrow section can enter the installation clearance between the wedge block and the guide rail, the wedge block clearance inspection step cooperates with the bottom of the wedge block, and the second guide rail contact surface is attached to the guide rail, while the wide section cannot enter the installation clearance between the wedge block and the guide rail.

[0008] Further, the thickness between the narrow section surface above the centering inspection step and the first guide rail contact surface is the lower limit dimension of the installation clearance standard between the safety clamp and the guide rail, and the tolerance of the lower limit dimension of the installation clearance standard between the safety clamp and the guide rail is 0 to +0.05 mm;

[0009] The thickness between the wide section below the centering inspection step and the first guide rail contact surface is the upper limit dimension of the safety clamp and guide rail installation clearance standard, and the tolerance of the upper limit dimension of the safety clamp and guide rail installation clearance standard is -0.05 to 0 mm;

[0010] The thickness between the narrow section above the wedge clearance inspection step and the second guide rail contact surface is the lower limit dimension of the wedge and guide rail installation clearance standard, and the tolerance of the lower limit dimension of the wedge and guide rail installation clearance standard is 0 to +0.05 mm;

[0011] The thickness between the wide section below the wedge clearance inspection step and the second guide rail contact surface is the upper limit dimension of the wedge and guide rail installation clearance standard, and the tolerance of the upper limit dimension of the wedge and guide rail installation clearance standard is -0.05 to 0 mm.

[0012] Further, the number of inspection ends is two, the two inspection ends are mirror-symmetrically designed, and the two inspection ends and the handheld end are integrally in a T shape.

[0013] Further, the wedge clearance inspection step and the handheld end are on the same side.

[0014] Further, the two inspection ends and the handheld end are integrally formed.

[0015] Further, the two inspection ends and the handheld end are detachable, and the two inspection ends and the handheld end can be detachably connected by clamping or screwing.

[0016] Further, the ends of the inspection end and the handheld end are both chamfered and passivated.

[0017] Further, the handheld end is provided with a rope-passing hole.

[0018] The present utility model has the following advantages compared with the prior art:

[0019] By judging whether the narrow section and the wide section can pass through the gap, it can be determined whether the gap meets the standard requirements, which is simple and reliable; the symmetrically designed inspection ends can realize the inspection of the gaps on both sides of the safety clamp and the guide rail, and the inspection work can still be quickly completed without being restricted by space; the ends of the inspection end and the handheld end are both chamfered and passivated, which is safe when contacting the human body, and the handheld end is provided with a rope-passing hole for easy carrying; the structure is simple, the functions are diversified, the inspection steps are simplified, the inspection efficiency is improved, and the labor cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present utility model, form a part of this application, and do not constitute an improper limitation to the present utility model. In the drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is a front - view structural schematic diagram of the present utility model;

[0023] Figure 3 is an axonometric drawing of the present utility model;

[0024] Figure 4 is Figure 3 a structural schematic diagram of part A;

[0025] Figure 5 is a structural installation drawing of a safety tongs and a guide rail;

[0026] Figure 6 is Figure 5 a sectional view taken along the line C - C;

[0027] Figure 7 is Figure 6 a structural schematic diagram of part B;

[0028] Figure 8 is Figure 6 a structural schematic diagram of part C.

[0029] Inspection end 1, narrow section 11, wide section 12, centering inspection step 13, wedge - block clearance inspection step 14, first guide - rail contact surface 15, second guide - rail contact surface 16, hand - held end 2, rope - passing hole 21, bottom of the tongs mouth 3, bottom of the wedge - block 4, guide rail 5. Specific embodiments

[0030] The present utility model will be described in detail below in conjunction with the drawings and specific embodiments. Here, the schematic embodiments and descriptions of the present utility model are used to explain the present utility model, but not to limit the present utility model.

[0031] As Figures 1-8 shown, a safety - tongs and guide - rail clearance inspection tool includes an inspection end 1 and a hand - held end 2. The number of the inspection ends 1 is two. The two inspection ends 1 are designed to be mirror - symmetric. The two inspection ends 1 and the hand - held end 2 are integrally in a T - shape.

[0032] The inspection end 1 includes a narrow section 11 and a wide section 12. Between the narrow section 11 and the wide section 12, there are provided a centering inspection step 13 for cooperating with the bottom of the tongs mouth 3 of the safety tongs and a wedge - block clearance inspection step 14 for cooperating with the bottom of the wedge - block 4. The centering inspection step 13 and the wedge - block clearance inspection step 14 are located on adjacent surfaces. The opposite surface of the centering inspection step 13 is the first guide - rail contact surface 15, and the opposite surface of the wedge - block clearance inspection step 14 is the second guide - rail contact surface 16. Both the first guide - rail contact surface 15 and the second guide - rail contact surface 16 are flat surfaces.

[0033] When the installation clearance between the jaws of the safety tongs and the guide rail 5 meets the standard requirements, the narrow section 11 can enter the installation clearance between the safety tongs and the guide rail 5. The centering inspection step 13 cooperates with the bottom 3 of the jaws of the safety tongs, and the first guide rail contact surface 15 is attached to the guide rail 5. The wide section 12 cannot enter the installation clearance between the safety tongs and the guide rail 5.

[0034] When the installation clearance between the wedge block and the guide rail 5 meets the standard requirements, the narrow section 11 can enter the installation clearance between the wedge block and the guide rail 5. The wedge block clearance inspection step 14 cooperates with the bottom 4 of the wedge block, and the second guide rail contact surface 16 is attached to the guide rail 5. The wide section 12 cannot enter the installation clearance between the wedge block and the guide rail 5.

[0035] The thickness between the narrow section surface above the centering inspection step 13 and the first guide rail contact surface 15 is the lower limit dimension of the installation clearance standard between the safety tongs and the guide rail. The tolerance of the lower limit dimension of the installation clearance standard between the safety tongs and the guide rail is 0 to +0.05 mm;

[0036] The thickness between the wide section surface below the centering inspection step 13 and the first guide rail contact surface 15 is the upper limit dimension of the installation clearance standard between the safety tongs and the guide rail. The tolerance of the upper limit dimension of the installation clearance standard between the safety tongs and the guide rail is -0.05 to 0 mm;

[0037] The thickness between the narrow section surface above the wedge block clearance inspection step 14 and the second guide rail contact surface 16 is the lower limit dimension of the installation clearance standard between the wedge block and the guide rail. The tolerance of the lower limit dimension of the installation clearance standard between the wedge block and the guide rail is 0 to +0.05 mm;

[0038] The thickness between the wide section surface below the wedge block clearance inspection step 14 and the second guide rail contact surface 16 is the upper limit dimension of the installation clearance standard between the wedge block and the guide rail. The tolerance of the upper limit dimension of the installation clearance standard between the wedge block and the guide rail is -0.05 to 0 mm.

[0039] The wedge block clearance inspection step 14 and the hand-held end 2 are located on the same side.

[0040] In some embodiments, the two inspection ends 1 and the hand-held end 2 are integrally formed.

[0041] In some embodiments, the two inspection ends 1 and the hand-held end 2 are detachable. The two inspection ends 1 and the hand-held end 2 can be detachably connected by means of snap connection or screw connection. Of course, other detachable mechanisms can also be used for connection.

[0042] The ends of the inspection end 1 and the hand-held end 2 are both chamfered and passivated.

[0043] The hand-held end 2 is provided with a rope-passing hole 21.

[0044] The working principle of the present utility model is: after the safety tongs are installed, as Figure 6 、7 As shown in the figure, when inspecting the safety clamp and one side of the guide rail 5, the handheld end 2 faces the outside direction of the guide rail. The operator holds the handheld end 2 and inserts the narrow section 11 of one inspection end 1 into the gap between the jaw of the safety clamp and the guide rail 5. The narrow section 11 can enter the installation gap between the jaw of the safety clamp and the guide rail 5. The centering inspection step 13 cooperates with the bottom 3 of the jaw of the safety clamp. The wide section 12 cannot enter the installation gap between the jaw of the safety clamp and the guide rail 5. The installation gap between the jaw of the safety clamp and the guide rail 5 meets the standard requirements; otherwise, it does not meet the requirements. As Figure 6 、 8 shown in the figure, insert the narrow section 11 of one inspection end 1 into the installation gap between the wedge block and the guide rail 5. The wedge block gap inspection step 14 cooperates with the bottom 4 of the wedge block. The wide section 12 cannot enter the installation gap between the wedge block and the guide rail 5. The installation gap between the wedge block and the guide rail 5 meets the standard requirements; otherwise, it does not meet the requirements. When inspecting the other side of the safety clamp and the guide rail 5, refer to the above method. The handheld end 2 still faces the outside direction of the guide rail, and just use the other inspection end 1 for inspection.

[0045] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, according to the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A safety tongs and guide rail clearance inspection tool, characterized in that: It includes an inspection end and a handheld end. The inspection end includes a narrow section and a wide section. Between the narrow section and the wide section, there are a centering inspection step that cooperates with the bottom of the jaws of the safety tongs and a wedge clearance inspection step that cooperates with the bottom of the wedge. The centering inspection step and the wedge clearance inspection step are located on adjacent faces. The opposite face of the centering inspection step is the first guide rail contact surface, and the opposite face of the wedge clearance inspection step is the second guide rail contact surface. Both the first guide rail contact surface and the second guide rail contact surface are flat surfaces.

2. The safety tongs and guide rail clearance inspection tool according to claim 1, characterized in that: When the installation clearance between the jaws of the safety tongs and the guide rail meets the standard requirements, the narrow section can enter the installation clearance between the safety tongs and the guide rail. The centering inspection step cooperates with the bottom of the jaws of the safety tongs, and the first guide rail contact surface is attached to the guide rail, while the wide section cannot enter the installation clearance between the safety tongs and the guide rail.

3. The safety tongs and guide rail clearance inspection tool according to claim 1, characterized in that: When the installation clearance between the wedge and the guide rail meets the standard requirements, the narrow section can enter the installation clearance between the wedge and the guide rail. The wedge clearance inspection step cooperates with the bottom of the wedge, and the second guide rail contact surface is attached to the guide rail, while the wide section cannot enter the installation clearance between the wedge and the guide rail.

4. The safety tongs and guide rail clearance inspection tool according to claim 1, characterized in that: The thickness between the narrow section surface above the centering inspection step and the first guide rail contact surface is the lower limit dimension of the standard installation clearance between the safety tongs and the guide rail, and the tolerance of the lower limit dimension of the standard installation clearance between the safety tongs and the guide rail is 0 to +0.05 mm; The thickness between the wide section surface below the centering inspection step and the first guide rail contact surface is the upper limit dimension of the standard installation clearance between the safety tongs and the guide rail, and the tolerance of the upper limit dimension of the standard installation clearance between the safety tongs and the guide rail is -0.05 to 0 mm; The thickness between the narrow section surface above the wedge clearance inspection step and the second guide rail contact surface is the lower limit dimension of the standard installation clearance between the wedge and the guide rail, and the tolerance of the lower limit dimension of the standard installation clearance between the wedge and the guide rail is 0 to +0.05 mm; The thickness between the wide section surface below the wedge clearance inspection step and the second guide rail contact surface is the upper limit dimension of the standard installation clearance between the wedge and the guide rail, and the tolerance of the upper limit dimension of the standard installation clearance between the wedge and the guide rail is -0.05 to 0 mm.

5. The safety tongs and guide rail clearance inspection tool according to claim 1, characterized in that: The number of inspection ends is two. The two inspection ends are designed to be mirror-symmetrical, and the two inspection ends and the handheld end are integrally in a T shape.

6. The safety tongs and guide rail clearance inspection tool according to claim 5, characterized in that: The wedge clearance inspection step and the handheld end are located on the same side.

7. The safety tongs and guide rail clearance inspection tool according to claim 5, characterized in that: The two inspection ends and the handheld end are integrally formed.

8. The safety tongs and guide rail clearance inspection tool according to claim 5, characterized in that: The two inspection ends and the handheld end are detachable. The two inspection ends and the handheld end can be disassembled and assembled through clamping or screwing methods.

9. A safety tongs and guide rail clearance inspection tool according to claim 1, characterized in that: Both the inspection end and the end of the handheld end are chamfered and passivated.

10. A safety tongs and guide rail clearance inspection tool according to claim 1, characterized in that: The handheld end is provided with a rope-passing hole.