Tool for testing axial clearance of elevator latch hook bearing

Abstract

The utility model discloses an elevator lock hook bearing testing tool, and particularly relates to an elevator lock hook bearing axial clearance testing tool, which is structurally characterized in that a bearing outer ring and a step shaft sleeve are mutually locked through a step shaft sleeve nut, and the step shaft sleeve is fixedly mounted on a lock hook plate, so that the bearing outer ring and the lock hook plate are in a relatively static state; the bearing inner ring and the step shaft are mutually locked through the first fastening nut, so that the bearing inner ring and the step shaft are in a relatively static state; and meanwhile, the measuring head of the dial indicator is always abutted against the surface of the lock hook plate, so that the axial clearance of the bearing can be determined through the numerical value of the dial indicator only by applying a certain force to the lock hook plate to swing up and down. The technical problem of testing the axial clearance of the elevator lock hook bearing in the movement process of the elevator lock hook is solved, the axial clearance of the bearing can be determined through the numerical value of the dial indicator only by applying certain force to the lock hook plate to swing up and down, the overall structure is simple, the failure rate is low, and meanwhile portability is achieved.

Description

Technical Field

[0001] The utility model relates to a testing tool for an elevator lock hook bearing, in particular to a testing tool for an axial clearance of an elevator lock hook bearing. Background Art

[0002] The installation of the elevator hook bearing is crucial to ensuring elevator safety. During installation, it is important to ensure it is in good working condition to prevent potential safety hazards caused by hook failure.

[0003] ‌The bearing clearance (especially axial clearance) during the movement of the elevator hook has an important impact on the working condition and performance of the elevator hook bearing. ‌Affecting the operating performance and life of the elevator hook bearing‌: Appropriate clearance can ensure that the bearing has sufficient lubrication and heat dissipation space during operation, reduce friction and wear, and thus extend the service life of the bearing. Too small a clearance will increase the contact stress between the rolling element and the raceway, accelerating wear and fatigue damage‌. ‌Affecting the stability and precision of the elevator hook bearing‌: Too large or too small a clearance will affect the operating stability of the elevator hook bearing, causing the elevator hook bearing to vibrate and increase noise, and even affect the overall performance of the elevator hook bearing‌.

[0004] Therefore, in order to meet product design requirements and control the axial clearance range of the elevator lock hook bearing during the movement of the elevator lock hook, a test tooling was designed and developed in combination with actual applications. Summary of the Invention

[0005] The purpose of the utility model is to provide an elevator lock hook bearing axial clearance testing device in order to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model is designed to test the axial clearance of the elevator hook bearing, which includes:

[0007] Stepped shaft, lock hook plate, step sleeve, bearing, step sleeve nut, flat washer, first fastening nut, dial indicator, bracket and carrier; the step sleeve is fixedly installed in the mounting hole of the lock hook plate, and the outer shoulder of the step sleeve abuts against the edge of the mounting hole of the lock hook plate; the bearing is installed in the step sleeve, and the bottom surface of one side of the outer ring of the bearing abuts against the inner shoulder of the step sleeve; one side shaft end of the step shaft passes through the bearing, flat washer and first fastening nut in sequence, and the outer shoulder of the step shaft abuts against the bottom surface of one side of the inner ring of the bearing; flat washer The ring abuts against the bottom surface of the other side of the inner ring of the bearing, and an external thread is provided on the extension section through the bearing through the end of the shaft, and then threadedly cooperates with the first fastening nut for locking; the stepped sleeve is provided with an external thread, and the stepped sleeve nut is sleeved onto the stepped sleeve, and the inner step of the stepped sleeve nut abuts against the bottom surface of the other side of the outer ring of the bearing, and is locked by threading with the stepped sleeve; the other side shaft end of the stepped shaft is installed on the carrier; the dial indicator is installed on the bracket, and the measuring head of the dial indicator always abuts against the surface of the lock hook plate.

[0008] The test method of the above-mentioned elevator lock hook bearing axial clearance test fixture is: during the movement of the elevator lock hook, a certain force is applied to the lock hook plate to swing up and down, and the dial indicator value is used to determine whether the bearing axial clearance meets the product design requirements.

[0009] In the above-mentioned elevator hook bearing axial clearance test fixture, the specific installation structure of the dial indicator on the bracket is preferably selected as follows:

[0010] The bracket includes a base and a two-section support arm, one end of the support arm is installed on the base, and the dial indicator is installed on the other end of the support arm.

[0011] In the above-mentioned elevator hook bearing axial clearance test fixture, the specific installation structure of the stepped shaft on the carrier is preferably selected as follows:

[0012] The carrier is an aluminum profile, and the end of the stepped shaft is inserted into the profile groove on the surface of the aluminum profile. The end of the shaft is provided with an external thread, which is then threadedly matched with the second fastening nut for axial limitation and reciprocal movement in the extension direction of the profile groove.

[0013] Compared with the prior art, the elevator lock hook bearing axial clearance test fixture obtained by the present invention has the following technical effects:

[0014] The utility model can determine the axial clearance of the bearing through the dial indicator value only by applying a certain force to the lock hook plate to swing it up and down during the movement of the elevator lock hook. The overall structure is simple, the failure rate is low, and it is portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an elevator hook bearing axial clearance test fixture;

[0016] Figure 2 yes Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the partial assembly structure of an elevator hook bearing axial clearance test fixture;

[0018] Figure 4 This is a partially exploded schematic diagram of an elevator hook bearing axial clearance test fixture;

[0019] Figure 5 yes Figure 3 A schematic diagram of the top view of an elevator hook bearing axial clearance test fixture (excluding the carrier);

[0020] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure at aa in the middle;

[0021] Figure 7 The figure is a schematic diagram of the use status of an elevator lock hook bearing axial clearance test fixture.

[0022] In the figure: stepped shaft 1, lock hook plate 2, stepped shaft sleeve 3, bearing 4, stepped shaft sleeve nut 5, flat washer 6, first fastening nut 7, dial indicator 8, bracket 9, base 9-1, support arm 9-2, carrier 10, profile groove 10-1, second fastening nut 11. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0024] like Figure 1-6 As shown in FIG. 1 , as an embodiment of the present invention, an elevator hook bearing axial clearance test fixture provided in this embodiment includes:

[0025] Stepped shaft 1, lock hook plate 2, step sleeve 3, bearing 4, step sleeve nut 5, flat washer 6, first fastening nut 7, dial indicator 8, bracket 9 and carrier 10; the step sleeve 3 is fixedly installed in the mounting hole of the lock hook plate 2, and the outer shoulder of the step sleeve 3 abuts against the mounting hole edge of the lock hook plate 2; the bearing 4 is installed in the step sleeve 3, and the bottom surface of one side of the outer ring of the bearing 4 abuts against the inner shoulder of the step sleeve 3; the end of one side of the step shaft 1 passes through the bearing 4, flat washer 6 and the first fastening nut 7 in sequence, and the outer shoulder of the step shaft 1 abuts against the bottom surface of one side of the inner ring of the bearing 4 The flat washer 6 abuts against the bottom surface of the other side of the inner ring of the bearing 4, and is provided with an external thread on the extension section through the bearing 4 through the end of the shaft, and is then threadedly engaged with the first fastening nut 7 for locking; the stepped sleeve 3 is provided with an external thread, and the stepped sleeve nut 5 is sleeved onto the stepped sleeve 3, and the inner step of the stepped sleeve nut 5 abuts against the bottom surface of the other side of the outer ring of the bearing 4, and is threadedly engaged with the stepped sleeve 3 for locking; the other side shaft end of the stepped shaft 1 is mounted on the carrier 10; the dial indicator 8 is mounted on the bracket 9, and the measuring head of the dial indicator 8 always abuts against the surface of the lock hook plate 2.

[0026] The specific installation structure of the dial indicator 8 on the bracket 9 in this embodiment is as follows: the bracket 9 includes a base 9-1 and a two-section support arm 9-2, one end of the support arm 9-2 is installed on the base 9-1, and the dial indicator 8 is installed on the other end of the support arm 9-2.

[0027] The specific installation structure of the stepped shaft 1 on the carrier 10 in this embodiment is: the carrier 10 is an aluminum profile, and the shaft end of the stepped shaft 1 is inserted into the profile groove 10-1 on the surface of the aluminum profile. The shaft end is provided with an external thread, and then threadedly cooperates with the second fastening nut 11 to perform axial limitation, and moves back and forth in the extension direction of the profile groove 10-1.

[0028] In the above-mentioned fixture for testing the axial clearance of the elevator hook bearing, the outer ring of the bearing 4 and the stepped shaft sleeve 3 are locked with each other by the stepped shaft sleeve nut 5, and the stepped shaft sleeve 3 is fixedly installed on the hook plate 2, so that the outer ring of the bearing 4 and the hook plate 2 are in a relatively static state; the inner ring of the bearing 4 and the stepped shaft 1 are locked with each other by the first fastening nut 7, so that the inner ring of the bearing 4 and the stepped shaft 1 are in a relatively static state; at the same time, the measuring head of the dial indicator 8 is always in contact with the surface of the hook plate 2, so the axial clearance of the bearing 4 can be determined by the value of the dial indicator 8 only by applying a certain force to the hook plate 2 to swing it up and down during the movement of the elevator hook, such as Figure 7 shown.

[0029] At the same time, the above-mentioned elevator lock hook bearing axial clearance testing fixture has a structure in which, except for the stepped shaft sleeve 3 fixedly installed on the lock hook plate 2, the other components all adopt a detachable installation structure, so the disassembly and replacement of the components are more convenient and the structure is reasonable.

[0030] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. An elevator hook bearing axial clearance test fixture, characterized by include: Stepped shaft, lock hook plate, step sleeve, bearing, step sleeve nut, flat washer, first fastening nut, dial indicator, bracket and carrier; the step sleeve is fixedly installed in the mounting hole of the lock hook plate, and the outer shoulder of the step sleeve abuts against the edge of the mounting hole of the lock hook plate; the bearing is installed in the step sleeve, and the bottom surface of one side of the outer ring of the bearing abuts against the inner shoulder of the step sleeve; one side shaft end of the step shaft passes through the bearing, flat washer and first fastening nut in sequence, and the outer shoulder of the step shaft abuts against the bottom surface of one side of the inner ring of the bearing; flat washer The ring abuts against the bottom surface of the other side of the inner ring of the bearing, and an external thread is provided on the extension section through the bearing through the end of the shaft, and then threadedly cooperates with the first fastening nut for locking; the stepped sleeve is provided with an external thread, and the stepped sleeve nut is sleeved onto the stepped sleeve, and the inner step of the stepped sleeve nut abuts against the bottom surface of the other side of the outer ring of the bearing, and is locked by threading with the stepped sleeve; the other side shaft end of the stepped shaft is installed on the carrier; the dial indicator is installed on the bracket, and the measuring head of the dial indicator always abuts against the surface of the lock hook plate.

2. The elevator hook bearing axial clearance test fixture according to claim 1 is characterized by: The specific installation structure of the dial indicator on the bracket is: The bracket includes a base and a two-section support arm, one end of the support arm is installed on the base, and the dial indicator is installed on the other end of the support arm.

3. The elevator hook bearing axial clearance test fixture according to claim 1 is characterized by: The specific installation structure of the stepped shaft on the carrier is: The carrier is an aluminum profile, and the end of the stepped shaft is inserted into the profile groove on the surface of the aluminum profile. The end of the shaft is provided with an external thread, which is then threadedly matched with the second fastening nut for axial limitation and reciprocal movement in the extension direction of the profile groove.

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