Elevator test weights for easy transport

Abstract

The invention discloses an elevator test weight which is easy to move, comprising a weight body, wherein a lifting mechanism which can adjust the height of the weight along the vertical direction is arranged at the bottom of the weight body; the lifting mechanism comprises a lifting outer box arranged at the bottom of the weight body, a longitudinal adjustment block arranged in the lifting outer box, a spiral spring and a universal wheel arranged at the bottom of the longitudinal adjustment block. The movable weight of the technical solution is easy to operate, does not require professional personnel to operate, has low labor intensity, low cost and high efficiency, and solves the problem of the difficulty in carrying the heavy weight of the weight itself in the elevator test.

Description

Technical Field

[0001] The invention relates to the field of special equipment detection, and in particular to an elevator test weight which is easy to move. Background Art

[0002] Elevators are transportation equipment used to carry passengers or goods up and down in high-rise buildings. Due to the lag in standards and regulations and the lack of regulatory experience, in recent years, old elevators across the country have repeatedly experienced direct or indirect accidents due to insufficient braking force and traction force.

[0003] The existing elevator operation needs to do the following: 1. Traction capacity test: including balance coefficient test, no-load upward test, static load test, and forced stop test under 125% rated load; 2. Safety test: including speed limiter-safety clamp action test, buffer load and reset test; 3. Operation reliability test: operating speed test, operation test, overload test, etc.; 4. Complete machine performance detection and confirmation.

[0004] These tests all require that the load be placed inside the elevator, and then different weights of loads be added according to the experimental requirements. For example, when the staff conducts a 125% test on the elevator, they must first move 40% of the elevator load into the elevator, then run the elevator to record the data, and then test the elevator at 45%, 50%, and 60% loads and record the data to obtain the balance coefficient of the elevator. Finally, 100% and 125% load emergency stop tests are conducted to obtain the experimental results. Moving the weights back and forth during the test is a cumbersome process, which reduces work efficiency. Existing tests generally use manpower to carry the load, which is not only inefficient, but also very costly, and the efficiency of elevator inspection will be greatly reduced.

[0005] For this reason, a kind of elevator test weight that is easy to move is needed to solve the above-mentioned problem. Summary of the invention

[0006] In view of this, the mobile weight provided by the present invention is easy to operate, does not require professional personnel to operate, has low labor intensity, low cost, and high efficiency, and solves the problem of the difficulty in carrying the heavy weight of the weight itself in elevator testing.

[0007] An elevator test weight that is easy to move includes a weight body, a lifting mechanism that can adjust the height of the weight along the vertical direction is arranged at the bottom of the weight body; the lifting mechanism includes a lifting outer box arranged at the bottom of the weight body, a longitudinal adjustment block arranged in the lifting outer box, a spiral spring and a universal wheel arranged at the bottom of the longitudinal adjustment block.

[0008] Furthermore, installation openings for installing the lifting outer box are provided at the four corners of the bottom of the weight body, and spring positioning holes for installing the coil spring are provided in the installation openings.

[0009] Furthermore, the lifting outer box body is an overall rectangular parallelepiped structure, and two positioning ears for cooperating with the installation opening are arranged on the top of the lifting outer box body.

[0010] Furthermore, limiting holes are provided at the same height on two opposite side surfaces of the lifting outer box body, and a plurality of the limiting holes are evenly arranged along the vertical direction.

[0011] Furthermore, the cross section of the longitudinal adjustment block is a "convex"-shaped structure, and a positioning through hole is arranged in the longitudinal adjustment block.

[0012] Furthermore, a cylindrical pin for positioning the longitudinal adjustment block is arranged on the side of the lifting outer box, and the cylindrical pin is passed through two limiting holes and a positioning through hole of the lifting outer box body.

[0013] Furthermore, the top of the longitudinal adjustment block of the "convex"-shaped structure is protruded to form a mounting boss, one end of the coil spring is arranged on the mounting boss, and the other end is arranged in the spring positioning hole.

[0014] Furthermore, a connecting threaded hole for mounting a universal wheel is provided at the bottom of the longitudinal adjustment block.

[0015] The beneficial effects of the present invention are:

[0016] The mobile weight of the present invention has a simple structure, is easy to operate, reduces the cost of product development, and has a larger market. It reduces the labor intensity of staff and improves work efficiency. In the development of the mobile weight, many parts are selected from ready-made products, which is conducive to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 A bottom view of the weight of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation of the lifting outer box of the present invention;

[0021] Figure 4 This is a side view of the lifting outer box of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the longitudinal adjustment block of the present invention;

[0023] Figure 6 This is a schematic diagram of the cylindrical pin structure of the present invention;

[0024] Figure 7It is a schematic diagram of the universal wheel structure of the present invention. DETAILED DESCRIPTION

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A bottom view of the weight of the present invention; Figure 3 This is a schematic diagram of the installation of the lifting outer box of the present invention; Figure 4 This is a side view of the lifting outer box of the present invention; Figure 5 This is a schematic diagram of the structure of the longitudinal adjustment block of the present invention; Figure 6 This is a schematic diagram of the cylindrical pin structure of the present invention; Figure 7 This is a schematic diagram of the universal wheel structure of the present invention. As shown in the figure, an elevator test weight that is easy to move includes a weight body 1, and a lifting mechanism is provided at the bottom of the weight body 1 for adjusting the height of the weight in the vertical direction; the lifting mechanism includes a lifting outer box 2 provided at the bottom of the weight body, a longitudinal adjustment block 5 provided in the lifting outer box 2, a spiral spring 7, and a universal wheel 3 provided at the bottom of the longitudinal adjustment block 5. The mobile weight provided by this technical solution is easy to operate, does not require professional personnel to operate, has low labor intensity, low cost, and high efficiency, and solves the problem of the difficulty in carrying the weight itself due to its large weight in elevator testing.

[0026] In this embodiment, the four corners of the bottom of the weight body 1 are provided with installation openings 11 for installing the lifting outer box, and the installation openings 11 are provided with spring positioning holes 12 for installing the coil spring. The four corners of the bottom of the weight body are processed to form installation openings 11 with rectangular structures, and the four installation openings are arranged around them respectively, forming a "cross" structure at the bottom of the weight body, and the surface of the installation opening 11 is provided with spring positioning holes 12 for installing the coil spring 7, and the installation opening 11 is also processed with threaded holes 13, and the overall structure is easy to process and easy to form.

[0027] In this embodiment, the lifting outer box body 2 is a rectangular parallelepiped structure as a whole, and the top of the lifting outer box body is provided with two positioning ears 21 for cooperating with the installation opening for installation. The lifting outer box body is a hollow box body with a rectangular structure. Figure 1 As shown in the figure, the upper part is the top and the lower part is the bottom) two positioning ears 21 are provided which extend outwardly in the horizontal direction. The positioning ears 21 are provided with threaded mounting holes. The two positioning ears fit the mounting openings and are positioned and installed through the threaded holes 13. The installation is simple and quick, and the assembly is convenient.

[0028] In the present embodiment, limiting holes 22 are provided at the same height on the two opposite sides of the lifting outer box body 2, and a plurality of limiting holes 22 are evenly arranged along the vertical direction. Limiting holes 22 are provided on the two opposite sides of the lifting outer box body 2, and the limiting holes at the same height on the two sides are a group, and each group of limiting holes is evenly spaced. The limiting holes 22 can be designed into multiple groups according to actual conditions. The preferred technical solution only needs to design two groups. The limiting holes 22 are through holes and are provided in the middle position of the side of the lifting outer box body to facilitate adjustment.

[0029] In this embodiment, the cross section of the longitudinal adjustment block 5 is a "convex"-shaped structure, and a positioning through hole 52 is provided in the longitudinal adjustment block. The longitudinal adjustment block with a "convex"-shaped structure can slide along the vertical direction of the lifting outer box body, and a positioning through hole 52 is processed inside the longitudinal adjustment block, and the positioning through hole 52 is used to cooperate with the limit hole 22.

[0030] In this embodiment, a cylindrical pin 6 for positioning the longitudinal adjustment block 5 is provided on the side of the lifting outer box 2, and the cylindrical pin 6 is inserted through the two limiting holes 22 and the positioning through hole 52 of the lifting outer box. One end of the cylindrical pin 6 is a threaded mechanism, and the other end of the cylindrical pin 6 is provided with a rotating handle. When in use, the positioning through hole 52 and a group of limiting holes 22 of the same height are adjusted to the same height, and the cylindrical pin 6 is passed through the limiting hole 22 and the positioning through hole 52 to achieve positioning. Of course, the limiting hole 22 is also processed into a threaded mechanism to improve the stability of the product when in use. The locking or releasing function of the cylindrical pin can be achieved by rotating the rotating handle. The height adjustment of the lifting mechanism is achieved through the cooperation of the limiting holes 22 and the positioning through holes 52 of different heights in the vertical direction.

[0031] In this embodiment, the top of the longitudinal adjustment block of the "convex" structure is raised to form a mounting boss 51, one end of the coil spring 7 is arranged on the mounting boss 515, and the other end is arranged in the spring positioning hole 13. The mounting boss 51 and the spring positioning hole 13 cooperate with each other to facilitate the installation of the coil spring 7.

[0032] In this embodiment, a connecting threaded hole 53 for installing a universal wheel is provided at the bottom of the longitudinal adjustment block 5. The universal wheel 3 is fixedly connected and installed through the connecting threaded hole 53 at the bottom of the longitudinal adjustment block 5, and the overall structure is simple and easy to install.

[0033] Specific operation method:

[0034] By rotating the four cylindrical pins 6, the weight is pulled out from the limiting hole 22 (in the limiting hole at the upper end). Since the weight itself is much larger than the elastic force generated by the spring, the weight is still in a static state. The staff lifts the weight through the portable handle 4. Due to the elastic force generated by the spring, the longitudinal adjustment block drops. The longitudinal adjustment block is connected to the universal wheel, causing the universal wheel to drop 10mm. The four cylindrical pins pulled out are inserted into the limiting hole 22 (in the limiting hole at the lower end), and then the cylindrical pins are rotated to lock it. The staff uses a rigid traction object to pull through the portable handle to move the weight to the designated location. This avoids the need for hand-carrying operations and reduces the labor intensity of the staff.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An elevator test weight that is easy to move, characterized in that: It includes a weight body, and a lifting mechanism is arranged at the bottom of the weight body, which can adjust the height of the weight along the vertical direction; the lifting mechanism includes a lifting outer box arranged at the bottom of the weight body, a longitudinal adjustment block arranged in the lifting outer box, a coil spring and a universal wheel arranged at the bottom of the longitudinal adjustment block; limiting holes are arranged at the same height on two opposite sides of the lifting outer box, and multiple limiting holes are evenly arranged along the vertical direction; the cross-section of the longitudinal adjustment block is a "convex"-shaped structure, and a positioning through hole is arranged in the longitudinal adjustment block; a cylindrical pin for positioning the longitudinal adjustment block is arranged on the side of the lifting outer box, and the cylindrical pin is penetrated through the two limiting holes and the positioning through hole of the lifting outer box.

2. The portable elevator test weight according to claim 1, characterized in that: The four corners at the bottom of the weight body are all provided with installation openings for installing the lifting outer box, and the installation openings are all provided with spring positioning holes for installing the coil spring.

3. The portable elevator test weight according to claim 2, characterized in that: The lifting outer box is in a rectangular structure as a whole, and two positioning ears for cooperating with the installation opening are arranged on the top of the lifting outer box.

4. The portable elevator test weight according to claim 3, characterized in that: The top of the longitudinal adjustment block of the "convex"-shaped structure is raised to form a mounting boss, one end of the coil spring is arranged on the mounting boss, and the other end is arranged in the spring positioning hole.

5. The portable elevator test weight according to claim 4, characterized in that: A connecting threaded hole for mounting a universal wheel is arranged at the bottom of the longitudinal adjustment block.

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