Assembly lifting tool used in escalator reconstruction

Abstract

This utility model discloses an assembly lifting fixture for use during escalator renovation, including a supporting beam, a pin, and a locking nut. The pin has an outer thread, a positioning step, a limiting step, and an inner thread. The supporting beam has internally threaded holes at both ends and two lifting lugs. The outer circumferential surface of the positioning step is adapted to the mounting hole on the assembly. The locking nut is adapted to the outer thread and is used to fix the assembly lifting fixture to the assembly. This utility model can safely and conveniently lift the assembly during escalator renovation.

Description

Technical Field

[0001] This utility model relates to the field of escalator technology, specifically to an assembly lifting fixture used during escalator renovation. Background Technology

[0002] During the renovation and upgrading of escalator trusses, the upper and lower assemblies are the largest components in terms of external dimensions. Because they play a fundamental role in positioning the critical dimensions of the escalator, this component is usually not further subdivided but treated as a single, complete escalator. Improper lifting methods at the renovation site can cause damage to the component, dimensional errors, and ultimately affect the overall quality of the escalator.

[0003] Chinese patent document CN209685112U discloses a structure and installation fixture for retrofitting old escalators or moving walkways. The key feature is the use of this fixture to quickly position various components of the escalator, such as the upper and lower assemblies, relative to the original truss, thus shortening the retrofit cycle. Therefore, how to safely and conveniently allow components such as the upper and lower assemblies to enter the interior of the original truss from the unloading point is a current technical challenge. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an assembly lifting fixture for use in escalator renovation, including a supporting beam, a pin, and a locking nut; the pin has an outer thread, a positioning step, a limiting step, and an inner thread; the supporting beam has internal threaded holes at both ends and two lifting lugs on the supporting beam; the outer circumferential surface of the positioning step is adapted to the mounting hole on the assembly; the locking nut is adapted to the outer thread and is used to fix the assembly lifting fixture on the assembly.

[0005] Preferably, the thickness of the positioning step is slightly less than the thickness of the substrate at the mounting hole on the assembly.

[0006] Preferably, the circular holes of the two lugs are concentric.

[0007] Preferably, the sum of the width of the limiting step and the width of the supporting beam is a preset size, so that after the assembly lifting fixture is installed on the assembly, the total width of the left and right base plates of the assembly remains unchanged.

[0008] Compared with the prior art, the assembly lifting fixture of this utility model can lift assemblies safely and conveniently. Attached Figure Description

[0009] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0010] Figure 1 This is a schematic diagram of the assembly lifting fixture being installed onto the upper assembly in Example 1;

[0011] Figure 2 This is a partial schematic diagram of the assembly lifting fixture structure in Example 1;

[0012] Figure 3 This is a schematic diagram of the pin structure in the assembly lifting fixture of Example 1;

[0013] Figure 4 This is a schematic diagram of the assembly lifting fixture structure for Example 1. Detailed Implementation

[0014] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can fully understand other advantages and technical effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. The following exemplary embodiments of this utility model can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of this utility model thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art. Example

[0015] like Figure 1 As shown, during the escalator renovation, after the upper assembly is installed using two sets of assembly lifting fixtures 1, it can be moved from the unloading point into the interior of the old truss. The same applies to the lower assembly.

[0016] like Figures 2 to 4 As shown, this embodiment provides an assembly lifting fixture for use during escalator renovation. Each assembly lifting fixture 1 includes a support beam 11, two pins 12, and two locking nuts 13. Typically, at least two assembly lifting fixtures 1 are used simultaneously for lifting.

[0017] The pin 12 has an outer thread 121, a positioning step 122, a limiting step 123, and an inner thread 124; the supporting beam 11 has internal threaded holes 112 at both ends, and two lifting lugs 111 on the supporting beam. The top of the lifting lug 111 has a round hole for lifting, and it is usually required that the round holes of the two lifting lugs are concentric; the lifting lug 111 is fixed to the supporting beam as a whole by welding.

[0018] The outer circumferential surface of the positioning step 122 is adapted to the mounting hole on the assembly, and the thickness of the positioning step 122 is slightly less than the thickness of the base plate 20 at the mounting hole on the assembly. One end face of the limiting step 122 is in contact with the base plate 20, and is tightened with the locking nut 13 to make the pin 12 tightly connected to the base plate 20. The other end face of the limiting step 122 is in contact with the end face of the supporting beam 11. Finally, the locking nut 13 is tightened by adapting to the outer thread 121 to fix the assembly lifting fixture 1 on the assembly.

[0019] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the present invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. An assembly hoist kit for use in escalator retrofits, characterized by, This includes the support beam, pins, and lock nuts; The pin has an outer thread, a positioning step, a limiting step, and an inner thread; the support beam has internal threaded holes at both ends and two lifting lugs on the support beam; the outer circumferential surface of the positioning step is adapted to the mounting hole on the assembly; the locking nut is adapted to the outer thread and is used to fix the lifting fixture of the assembly on the assembly.

2. An assembly hoist kit for use in escalator modernization according to claim 1, characterized in that, The thickness of the positioning step is slightly less than the thickness of the substrate at the mounting hole on the assembly.

3. An assembly hoist kit for use in escalator modernization according to claim 1, characterized in that, The two lugs have concentric holes.

4. An assembly hoist kit for use in escalator modernization according to claim 1, characterized in that, The sum of the width of the limiting step and the width of the supporting beam is a preset size, so that after the assembly lifting fixture is installed on the assembly, the total width of the left and right base plates of the assembly remains unchanged.

Images