Elevator hoisting test detection device

Abstract

This invention discloses an elevator traction test device, comprising a lifting structure mounted on a hook in the elevator machine room for lifting the entire device; a traction force loading system mounted on the lifting structure for applying traction force to the traction steel wire rope; the traction force loading system including a clamping structure for holding the traction steel wire rope; and a distance measuring device mounted on the clamping structure for measuring the displacement change of the traction steel wire rope. The elevator traction test device can simulate a loaded test on an elevator without transporting a large amount of weights. Even with excessive loading force, the device will not damage the traction machine base support beam structure, nor will it damage other critical structures of the elevator.

Description

Technical Field

[0001] This invention relates to the field of elevator testing technology, and in particular to an elevator traction test device. Background Technology

[0002] The static traction test for elevators is a load-bearing test. The test object is a freight elevator with a car area exceeding the specified limit. The test is conducted during the acceptance of newly installed elevators or periodic inspections when the wear of the traction sheave groove may affect the traction capacity. The specific contents are as follows: For freight elevators with a car area exceeding the specified limit, the static traction test is conducted with a load capacity of 1.25 times the rated load capacity corresponding to the actual car area; For non-commercial elevators with a rated load capacity calculated based on an effective car area of ​​not less than 200 kg / m², the static traction test is conducted with a load capacity of 1.5 times the rated load capacity.

[0003] According to the elevator inspection standard TSG7001, all static traction tests on elevators are load tests. Before the test, the test weights must be moved into the car, and then the subsequent test procedures must be followed. Using load tests requires moving a large number of weights, which is labor-intensive and significantly reduces test efficiency.

[0004] The existing technology CN110411772B, "Elevator No-Load Static Traction Test Method and Device," discloses a device that can apply tension to the traction steel wire rope through a traction force loading system to meet the test requirements. However, the device is installed on the traction machine base support beam, and excessive loading force may cause damage to the traction machine base support beam structure.

[0005] Existing elevator machine rooms are equipped with elevator machine room hooks, which typically have a load capacity of 3-6 tons. These hooks are usually positioned above the traction steel wire ropes, allowing for the use of these hooks to conduct traction tests on the elevator.

[0006] Therefore, an elevator traction testing device is needed to solve the above problems. Summary of the Invention

[0007] To achieve the above objectives, the present invention proposes an elevator traction test and detection device, comprising a lifting structure mounted on a hook in the elevator machine room for lifting the entire elevator traction test and detection device; a traction force loading system mounted on the lifting structure for applying traction force to the traction steel wire rope; the traction force loading system comprising a clamping structure for clamping the traction steel wire rope; and a distance measuring device mounted on the clamping structure for measuring the displacement change of the traction steel wire rope.

[0008] Preferably, the lifting structure includes a fixed frame and lifting equipment; the fixed frame is connected to the output end of the lifting equipment, and the fixed end of the lifting equipment is connected to the elevator machine room hook;

[0009] Preferably, the lifting equipment is an electric hoist or a manual hoist, and the lifting equipment is equipped with a first hook for connecting to the elevator machine room hook, and the output end of the lifting equipment is equipped with a second hook for connecting to the fixed frame.

[0010] Furthermore, the first hook is installed on the housing of the lifting equipment.

[0011] Preferably, the fixed frame includes a fixed part and several supporting parts; the supporting parts are fixedly connected to the top surface of the fixed part;

[0012] Preferably, a hanging ring is provided on the top surface of the fixing part, which is used to connect with the second hook.

[0013] Preferably, the traction loading system is an electric telescopic cylinder or a hydraulic telescopic cylinder; the fixed end of the traction loading system is fixedly connected to the bottom surface of the fixed part; the output end of the fixed end of the traction loading system is fixedly connected to the clamping structure.

[0014] Preferably, the clamping structure includes a main clamping part and a secondary clamping part, which are detachably connected by bolts; a fixed space for clamping the traction steel wire rope is formed between the main clamping part and the secondary clamping part; the output end of the traction force loading system is fixedly connected to the top surface of the main clamping part.

[0015] Preferably, both the main clamping part and the auxiliary clamping part are provided with bolt holes for connecting bolts.

[0016] Preferably, the ranging device is mounted on the top surface of the main clamping part; the output end of the ranging device is oriented towards the fixing part.

[0017] Preferably, the ranging device is a laser rangefinder or an ultrasonic rangefinder.

[0018] Preferably, a pressure sensor is provided between the output end of the fixed end of the traction loading system and the clamping structure; the pressure sensor is used to measure the magnitude of the force applied to the clamping structure by the output end of the traction loading system.

[0019] Preferably, the elevator traction test device is further provided with a control structure; the control structure includes a controller and a display module; the controller is communicatively connected to the display module, pressure sensor, traction loading system, distance measuring device and lifting structure respectively; the display module is used to display the data of the pressure sensor and distance measuring device during the test process; the controller is used to control the operation of the traction loading system, distance measuring device and lifting structure.

[0020] Preferably, the number of support parts is four; the four support parts are arranged in a rectangular row on the top surface of the fixing part at one end.

[0021] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared with the prior art is as follows: First, it can simulate the load test of the elevator without the need to move a large number of weights; Second, since it is installed on the hook in the elevator machine room, even if the loading force of the device is too large, it will not cause damage to the traction machine base support beam structure, nor will it damage other key structures of the elevator. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an elevator traction test and detection device according to the present invention;

[0024] Figure 2 This is a schematic diagram of the controller connection for an elevator traction test and detection device.

[0025] Explanation of main component symbols

[0026] Distance measuring device 4 Fixed frame 11 12 lifting equipment First hook 120 Second hook 121 Hanging ring 110 Main clamping part 31 Sub-clamping section 32 Fixed space 33 Pressure sensor 30 Elevator machine room hook 71 70 traction steel wire rope Bolt hole 34 Control Structure 6 Controller 61 Display module 62 Elevator machine room ceiling 72

[0027] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-2 The elevator traction test and detection device includes: a lifting structure 1 mounted on the elevator machine room hook 71 for lifting the entire elevator traction test and detection device; a traction force loading system 2 mounted on the lifting structure 1 for applying traction force to the traction steel wire rope 70; the traction force loading system 2 includes a clamping structure 3 for clamping the traction steel wire rope; and a distance measuring device 4 mounted on the clamping structure 3 for measuring the displacement change of the traction steel wire rope.

[0030] In one embodiment of the present invention, the lifting structure 1 includes a fixed frame 11 and a lifting device 12; the fixed frame 11 is connected to the output end of the lifting device 12, and the fixed end of the lifting device 12 is connected to the elevator machine room hook 71.

[0031] In one embodiment of the present invention, the lifting device 12 is an electric hoist or a manual hoist. The lifting device 12 is provided with a first hook 120 for connecting with the elevator machine room hook, and the output end of the lifting device 12 is provided with a second hook 121 for connecting with the fixed frame 11.

[0032] Furthermore, the first hook 120 is disposed on the housing of the lifting device 12.

[0033] In one embodiment of the present invention, the fixed frame 11 includes a fixed part 111 and a plurality of supporting parts 112; the supporting parts 112 are fixedly connected to the top surface of the fixed part 111.

[0034] In one embodiment of the present invention, a hanging ring 110 is provided on the top surface of the fixing part 111, and the hanging ring 110 is used to connect with the second hook 121.

[0035] In one embodiment of the present invention, the traction loading system 2 is an electric telescopic cylinder or a hydraulic telescopic cylinder; the fixed end of the traction loading system 2 is fixedly connected to the bottom surface of the fixed part 111; the output end of the fixed end of the traction loading system 2 is fixedly connected to the clamping structure 3.

[0036] The existing electric telescopic cylinders that can output loads of several tons weigh only tens of kilograms. Therefore, the output force and weight of the electric telescopic cylinders can meet the requirements of elevator traction test.

[0037] In one embodiment of the present invention, the traction loading system 2 is a hand-cranked hydraulic jack.

[0038] In one embodiment of the present invention, the clamping structure 3 includes a main clamping part 31 and a secondary clamping part 32, the main clamping part 31 and the secondary clamping part 32 are detachably connected by bolts; a fixed space 33 for clamping the traction steel wire rope 70 is formed between the main clamping part 31 and the secondary clamping part 32; the output end of the traction force loading system 2 is fixedly connected to the top surface of the main clamping part 31.

[0039] In one embodiment of the present invention, both the main clamping part 31 and the auxiliary clamping part 32 are provided with bolt holes 34 for connecting bolts.

[0040] In one embodiment of the present invention, the ranging device 4 is disposed on the top surface of the main clamping part 31; the output end of the ranging device 4 is disposed facing the fixing part 111.

[0041] In one embodiment of the present invention, the ranging device 4 is a laser rangefinder or an ultrasonic rangefinder.

[0042] In one embodiment of the present invention, a pressure sensor 30 is provided between the output end of the fixed end of the traction loading system 2 and the clamping structure 3; the pressure sensor 30 is used to measure the magnitude of the force applied by the output end of the traction loading system 2 to the clamping structure 3.

[0043] In use, the first hook 120 is connected to the elevator machine room hook 71. The output end of the lifting equipment 12 is used to lift the fixed frame 11 until one end of the support part 112 contacts the ceiling. The support part 112 supports the elevator traction test device on the ceiling 72 of the elevator machine room. The traction steel wire rope 70 is clamped in the fixed space 33 formed by the main clamping part 31 and the auxiliary clamping part 32, and the main clamping part 31 and the auxiliary clamping part 32 are fixed with bolts. At the same time, the distance measuring device 4 is activated to measure the distance L1 between the clamping structure 3 and the ceiling or the fixed part 111. The traction force loading system 2 is activated to apply a downward force to the clamping structure 3, thereby applying a downward force to the clamped traction steel wire rope.

[0044] The downward force applied to the clamping structure 3 by the traction loading system 2 is measured by the pressure sensor 30, thereby controlling the force applied by the elevator traction test detection device to meet the test requirements. After the required force for the test is met, the device is left to stand for a period of time (e.g., 10 minutes), during which the displacement change of the traction steel wire rope is detected by the distance measuring device 4.

[0045] To visually represent the experimental results, the present invention also includes a control structure 6. The control structure 6 includes a controller 61 and a display module 62. The controller 61 is communicatively connected to the display module 62, the pressure sensor 30, the traction loading system 2, the ranging device 4, and the lifting device 12 of the lifting structure 1. The display module 62 is used to display the data of the pressure sensor 30 and the ranging device 4 during the experiment. The controller 61 is used to control the operation of the traction loading system 2, the ranging device 4, and the lifting structure 1.

[0046] The communication connection can be wired or wireless.

[0047] Through the above structural design, the present invention uses a traction loading system 2 to apply a tension of 70 to the traction steel wire rope, which eliminates the need for weights. This solves the problems of high labor intensity and low test efficiency that exist in the existing technology that uses loaded tests.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the present invention's specification and content under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An elevator traction test and detection device, characterized in that: The device includes a lifting structure mounted on a hook in the elevator machine room for lifting the entire elevator traction test and inspection device; a traction force loading system mounted on the lifting structure for applying traction force to the traction steel wire rope; the traction force loading system includes a clamping structure for holding the traction steel wire rope; and a distance measuring device mounted on the clamping structure for measuring the displacement changes of the traction steel wire rope; the lifting structure includes a fixed frame and lifting equipment; the fixed frame is connected to the output end of the lifting equipment, and the fixed end of the lifting equipment is connected to the hook in the elevator machine room; the lifting equipment... The hoist is either electric or manual. The lifting equipment is equipped with a first hook for connection to the elevator machine room hook, and a second hook for connection to a fixed frame at its output end. The fixed frame includes a fixed part and several supporting parts. The supporting parts are fixedly connected to the top surface of the fixed part. A hanging ring is provided on the top surface of the fixed part for connection to the second hook. The traction loading system is an electric telescopic cylinder or a hydraulic telescopic cylinder. The fixed end of the traction loading system is fixedly connected to the bottom surface of the fixed part. The output end of the fixed end of the traction loading system is fixedly connected to a clamping structure.

2. The elevator traction test and detection device according to claim 1, characterized in that: The clamping structure includes a main clamping part and a secondary clamping part, which are detachably connected by bolts. A fixed space for clamping the traction steel wire rope is formed between the main clamping part and the secondary clamping part. The output end of the traction loading system is fixedly connected to the top surface of the main clamping part. Both the main clamping part and the secondary clamping part are provided with bolt holes for connecting bolts.

3. The elevator traction test and detection device according to claim 2, characterized in that: The ranging device is mounted on the top surface of the main clamping part; the output end of the ranging device is oriented towards the fixing part.

4. The elevator traction test and detection device according to claim 3, characterized in that: A pressure sensor is installed between the output end of the fixed end of the traction loading system and the clamping structure; the pressure sensor is used to measure the magnitude of the force applied to the clamping structure by the output end of the traction loading system.

5. The elevator traction test and detection device according to claim 4, characterized in that: The elevator traction test device also includes a control structure, which includes a controller and a display module. The controller is communicatively connected to the display module, pressure sensor, traction loading system, distance measuring device, and lifting structure. The display module is used to display the data of the pressure sensor and distance measuring device during the test. The controller is used to control the operation of the traction loading system, distance measuring device, and lifting structure.

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