A regulating device of a traction sheave speed measuring motor, a traction machine and an elevator testing device

Abstract

The utility model provides a kind of adjusting device of traction sheave speed measuring motor and tractor, elevator testing device, adjusting device includes pedestal, adjusting lever, speed measuring motor and angle adjusting component.Pedestal upper portion is equipped with multiple first mounting hole, and it is detachably connected by bolt and the second mounting hole of adjusting lever, adjusting lever height adjustment is realized;Adjusting lever rotatably connects pedestal, and the speed measuring motor of its first end is rotatably abutted with the circumferential wall of traction sheave by coupling and driving wheel.Elastic part of angle adjusting component is connected adjusting lever and telescopic part by screw rod, and the telescopic rod of telescopic part can move axially in sleeve, and sleeve lower end is rotatably connected with the lower part of pedestal by lug base, and inclination is adjusted by spring pre-tightening and telescopic length.The adjusting device is integrated in tractor and elevator testing device, and the device is adjusted by multi-dimensional and elastic pre-tightening, solves the problem that traditional speed measuring device is inconvenient to adjust and poor in stability, applicable to elevator traction sheave speed test, with the advantages of quick installation, adapt to multiple scenarios.

Description

Technical Field

[0001] This utility model relates to the field of traction sheave speed measurement technology, specifically to an adjustment device for a traction sheave speed measuring motor and a testing device for traction machines and elevators. Background Technology

[0002] A tachogenerator is a small electromechanical device that converts rotor speed into a voltage signal output, and it is one of the basic devices in a measurement and control system. It is commonly used to measure and correct rotational speed, as well as to measure displacement and acceleration, and is widely applied in various electromechanical measurement and control systems for displacement, velocity, and acceleration. In existing tachogenerator testing, the tachogenerator is typically mounted using a fixed bracket with bolt connections, which presents several problems: First, position adjustment is inconvenient. Traditional brackets have fixed mounting holes, resulting in a relatively fixed installation position, and require tools for disassembly and assembly, making it difficult to quickly adjust the motor's spatial position (such as the test motor's height, tilt angle, and lateral contact length). Second, stability is insufficient. After the traditional tachogenerator is fixed, vibration or load changes can easily cause it to move, leading to unreliable contact between the test motor's rotor and the tested wheel, affecting the accuracy of the test data. Third, portability is poor. Traditional fixed brackets are bulky and difficult to adapt to the testing needs of various scenarios (such as laboratories, production lines, or field applications). Therefore, developing a device that facilitates the adjustment of the traction sheave tachogenerator is an urgent problem to be solved. Utility Model Content

[0003] To address the problems existing in the prior art, the first objective of this utility model is to provide an adjustment device for a traction sheave speed measuring motor, which includes a base, an adjustment rod, a speed measuring motor, and an angle adjustment component, enabling lateral, longitudinal, and height adjustments, and is suitable for laboratory, production line, or field testing scenarios.

[0004] The second objective of this invention is to provide a traction machine.

[0005] The third objective of this invention is to provide an elevator testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustment device for a traction sheave speed measuring motor includes: a vertically arranged base, an adjusting rod rotatably mounted on the upper part of the base, the adjusting rod being detachably connected to the base, and a plurality of first mounting holes spaced apart along the height direction on the upper part of the base for adjusting the height of the adjusting rod; a speed measuring motor, the speed measuring motor being mounted on the first end of the adjusting rod, the output end of which rotatably abuts against the circumferential wall of the traction sheave; and an angle adjustment assembly, the angle adjustment assembly including an elastic part and a telescopic part arranged in series, the elastic part being connected to the second end of the adjusting rod, and the telescopic part being rotatably connected to the lower part of the base, the tilt angle of the adjusting rod being adjusted by elastic preload and telescopic length.

[0008] According to one example, the adjusting rod is provided with a plurality of second mounting holes spaced apart along its length, and the first mounting holes and the second mounting holes are detachably connected by bolts.

[0009] According to one example, the output of the tachometer motor is sequentially connected to a coupling and a drive wheel, the drive wheel rotating against the circumferential wall of the traction sheave.

[0010] According to one example, the elastic part includes symmetrically arranged springs, the upper ends of two of the springs being connected to the second end of the adjusting rod via a first screw, and the lower ends of the two springs being connected to the telescopic part via a second screw.

[0011] According to one example, the telescopic part includes a telescopic rod and a sleeve, the telescopic rod being partially received within the sleeve and movable axially along the sleeve via a threaded connection, one end of the telescopic rod being connected to a second screw, and the lower end of the sleeve being rotatably connected to the lower part of the base.

[0012] According to one example, the lower end of the sleeve also has a rotating portion, the rotating portion including a first lug and a second lug, the second lug being rotatably connected to the first lug and connected to the lower end of the sleeve, the first lug being fixed to the lower part of the base.

[0013] According to one example, the first ear seat and the second ear seat are rotatably connected by a third screw.

[0014] According to one example, the lower part of the base is also provided with a plurality of magnetic blocks for fixing the base to the surface of the device under test.

[0015] A traction machine includes: a traction sheave; a drive motor, the output end of which is connected to the traction sheave via a transmission; and the aforementioned adjustment device, wherein the drive wheel of the speed measuring motor rotates and abuts against the circumferential wall of the traction sheave.

[0016] An elevator testing device includes: the aforementioned traction machine; a rope wound around the traction sheave; a car connected to one end of the rope; and a counterweight connected to the other end of the rope.

[0017] This utility model has the following advantages:

[0018] This invention provides an adjustment device that enables multi-dimensional adjustment of the tachometer motor. Multiple first mounting holes spaced along the height direction on the upper part of the base are detachably connected to second mounting holes on the adjustment rod via bolts, allowing for flexible adjustment of the rod's height. Simultaneously, the adjustment rod is rotatably connected to the base. Combined with the axial movement of the telescopic rod within the sleeve of the angle adjustment assembly and the oscillation of the rotating part at the lower end of the sleeve, the tilt angle of the adjustment rod can be adjusted. This structure allows the tachometer motor to be adjusted in multiple dimensions, including horizontal, vertical, height, and angle, and can be adapted to traction sheaves of different specifications and installation positions, enhancing the device's versatility and applicability.

[0019] In the angle adjustment assembly, the elastic part uses symmetrically arranged springs, which are connected to the adjusting rod and the telescopic part via the first screw and the second screw, respectively, providing a stable elastic preload for the tachometer motor. During the operation of the traction sheave, this preload ensures that the drive wheel of the tachometer motor always maintains tight rotational contact with the circumferential wall of the traction sheave. Even when the traction sheave vibrates or its speed changes, stable contact can be maintained, effectively avoiding speed measurement errors caused by poor contact. The positional stability of the tachometer motor is improved by 80%, and the speed test error is reduced to ±0.5%, improving the accuracy and reliability of speed measurement.

[0020] Multiple magnetic blocks at the bottom of the base allow for quick and easy attachment of the base to the surface of the device under test using magnetic force. A magnetic switch enables rapid switching between fixed and detached states, facilitating quick installation and removal. Furthermore, the device is designed with lightweight materials, allowing it to be stored in a carrying case for easy installation and portability, with an overall weight of ≤15kg. In addition, the device can withstand ambient temperatures ranging from -20℃ to 60℃, meeting the needs of outdoor testing.

[0021] This regulating device is applied to traction machines and elevator testing equipment to form a speed measurement and operation testing system. During elevator testing, the regulating device can monitor the rotational speed of the traction sheave in real time, effectively simulating the actual operating conditions of the elevator. This provides reliable data support for comprehensive testing and evaluation of elevator performance, helping to improve elevator product quality and operational safety. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the adjustment device for the traction wheel speed measuring motor of this utility model.

[0023] Figure 2This is a three-dimensional structural schematic diagram of the adjustment device for the traction wheel speed measuring motor of this utility model from another angle.

[0024] Figure 3 This is a three-dimensional structural diagram of the angle adjustment component of this utility model.

[0025] Figure 4 This is a three-dimensional structural diagram of the base and adjusting rod of this utility model.

[0026] Figure 5 This is a front view of the base and adjusting rod of this utility model.

[0027] Figure 6 This is a three-dimensional structural diagram of the speed measuring motor of this utility model.

[0028] Figure 7 This is a three-dimensional structural diagram of the traction machine with an adjustment device according to this utility model.

[0029] Wherein, 1 is the base, 101 is the first mounting hole, 102 is the magnetic block, 103 is the strip groove, 2 is the adjusting rod, 201 is the second mounting hole, 3 is the speed measuring motor, 301 is the coupling, 302 is the drive wheel, 4 is the angle adjusting assembly, 401 is the elastic part, 401a is the spring, 401b is the first screw, 401c is the second screw, 402 is the telescopic part, 402a is the telescopic rod, 402b is the sleeve, 402c is the nut, 403 is the rotating part, 403a is the first lug, 403b is the second lug, 403c is the third screw, 5 is the traction machine, 501 is the traction sheave, 502 is the drive motor, and 503 is the rope. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 1 , 2Figures 4 and 5 illustrate an embodiment of an adjustment device for a traction sheave tachometer motor. This device mainly includes a base 1, an adjusting rod 2, a tachometer motor 3, and an angle adjustment assembly 4. These components are all made of lightweight alloy material, making them lightweight, easy to install, and convenient to store in a suitcase by disassembly and folding. In practical applications, the device offers quick and efficient installation and positioning, reducing the installation and adjustment time of the tachometer motor 3 from the traditional 10 minutes to within 3 minutes, thus improving work efficiency. The base 1 is vertically arranged, with its upper part rotatably connected to the adjusting rod 2, forming an adjustable angle α, which is 0-45°. The adjusting rod 2 is a plate-shaped component, with its middle part connected to the base 1. The first and second ends of the adjusting rod 2 extend to both sides of the base 1, forming a cantilever structure. Based on this structure, the tachometer motor 3 is installed at the first end of the adjusting rod 2, and the angle adjustment assembly 4 is connected to the second end of the adjusting rod 2 and the lower part of the base 1, respectively, to adjust the position and angle of the tachometer motor 3 through coordinated operation.

[0032] The base 1 has a bottom plate and a vertical plate fixed to the upper part of the bottom plate. The vertical plate is perpendicular to the bottom plate and fixed with bolts, which facilitates disassembly and installation. The vertical plate adopts a C-shaped groove structure, and its internal cavity serves as a wiring channel for the power line and signal line of the tachometer motor 3, keeping the cables away from the rotation area of ​​the traction sheave 501 and improving system safety.

[0033] Reference Figure 1 The base 1 has 12 first mounting holes 101 spaced at intervals along its height on its vertical plate. The adjusting rod 2 has 10 second mounting holes 201 spaced at intervals along its length. The first mounting holes 101 and second mounting holes 201 are detachably connected by bolts. By selecting different combinations of hole positions, the height and longitudinal position of the tachometer motor 3 can be adjusted. For example, the support height of the tachometer motor 3 can be adjusted within the range of 200mm-500mm, and the longitudinal position of the tachometer motor 3 can be adjusted within the range of 0-300mm. Of course, different numbers of first mounting holes 101 and second mounting holes 201 can be set as needed, such as 6, 8, 14, etc.

[0034] The base plate is provided with multiple parallel strip grooves 103. The lower end of the vertical plate is fixed to one of the strip grooves 103 by bolts, so as to realize the lateral adjustment of the speed measuring motor 3, with an adjustment range of 0-150mm.

[0035] In an embodiment not shown, the adjusting rod 2 is connected to the base 1 via a universal ball joint. Combined with the angle adjustment assembly 4, this allows for tilt angle adjustment, supporting an adjustment range of 0-90°. Specifically, the universal ball joint includes a ball head and a ball socket. The ball head is fixed to the middle of the adjusting rod 2, and the ball socket is embedded in the top of the vertical plate of the base 1. A bearing is provided between the ball head and the ball socket. This structure enables the adjusting rod 2 to achieve three-dimensional angle adjustment in space.

[0036] Reference Figure 1 and Figure 6 A tachometer motor 3 is located at the first end of the adjusting rod 2, and its output end rotatably abuts against the circumferential wall of the traction sheave 501. The output end of the tachometer motor 3 is sequentially connected to a coupling 301 and a drive wheel 302, which rotatably abuts against the circumferential wall of the traction sheave 501. The first end of the adjusting rod 2 has an annular component, which is disc-shaped with multiple threaded holes on its end face. The mounting flange of the tachometer motor 3 is connected to these threaded holes via screws. The output end of the tachometer motor 3 is sequentially connected to the coupling 301 and the drive wheel 302, and the circumferential groove of the drive wheel 302 forms a rolling contact structure with the outer wall of the traction sheave 501.

[0037] Reference Figure 1 and Figure 3 Angle adjustment component 4 is disposed at the second end of adjustment rod 2 and is used to change the tilt angle of adjustment rod 2. Angle adjustment component 4 includes an elastic part 401 and a telescopic part 402 arranged in series. The elastic part 401 is connected to the second end of adjustment rod 2, and the telescopic part 402 is rotatably connected to the lower part of base 1. The tilt angle of adjustment rod 2 is adjusted by elastic pre-tightening and telescopic length adjustment.

[0038] The elastic part 401 includes two symmetrically arranged springs 401a. The upper ends of the two springs 401a are connected to the second end of the adjusting rod 2 via a first screw 401b, and the lower ends of the two springs 401a are connected to the telescopic part 402 via a second screw 401c. Specifically, the upper end of the spring 401a is hooked to the first screw 401b via a hook. The first screw 401b passes through the second mounting hole 201 at the second end of the adjusting rod 2, and nuts are provided at both ends for tightening. The lower end of the spring 401a is also hooked to the second screw 401c via a hook. The second screw 401c passes through the upper through hole of the telescopic rod 402a, forming a hinged connection node. Nuts are also provided at both ends of the second screw 401c for tightening.

[0039] The telescopic part 402 includes a telescopic rod 402a and a sleeve 402b, forming a screw drive mechanism. The telescopic rod 402a is partially housed within the sleeve 402b and moves axially along the sleeve 402b via a threaded connection. One end of the telescopic rod 402a is connected to a second screw 401c, and the lower end of the sleeve 402b is rotatably connected to the lower part of the base 1. One end of the telescopic rod 402a has a through hole through which the second screw 401c passes and engages with the lower end of the spring 401a in the elastic part 401, connecting the spring 401a, the second screw 401c, and the telescopic rod 402a in series. The upper end of the sleeve 402b has a through hole, and the other end of the telescopic rod 402a is inserted into the through hole and extends into the interior of the sleeve 402b. The outer wall of the telescopic rod 402a has external threads, and the upper end of the sleeve 402b has a nut 402c that engages with it. By rotating the nut 402c, the telescopic rod 402a can be driven to move axially along the sleeve 402b, thereby changing the overall length of the telescopic part 402 and realizing the precise adjustment of the tilt angle of the adjusting rod 2.

[0040] In an embodiment not shown, the upper end of the sleeve 402b is provided with an annular groove, and the lower part of the nut is correspondingly provided with an annular protrusion, forming a locking structure. When the nut 402c is rotated, the annular protrusion slides within the annular groove, allowing the nut 402c to rotate relative to the sleeve 402b but preventing axial movement. At this time, the rotational movement of the nut 402c directly drives the telescopic rod 402a to move axially through thread engagement. For example, when the nut 402c rotates clockwise, the telescopic rod 402a retracts into the sleeve 402b due to the relative movement of the threaded pair, shortening the overall length of the telescopic part 402; when the nut 402c rotates counterclockwise, the telescopic rod 402a extends outward from the sleeve 402b, increasing the length of the telescopic part 402.

[0041] The sleeve 402b has through grooves on both sides, with the length of the grooves aligned with the axial direction of the sleeve 402b. These grooves allow the operator to directly observe the length of the telescopic rod 402a extending into the sleeve 402b, facilitating the determination of the current adjustment position and preventing structural damage from excessive tightening. The width of the through grooves is greater than the outer diameter of the telescopic rod 402a, ensuring clear observation without affecting the stability of the screw drive.

[0042] Reference Figure 3The lower end of the sleeve 402b also has a rotating part 403, which includes a first ear 403a and a second ear 403b. The second ear 403b is rotatably connected to the first ear 403a and is connected to the lower end of the sleeve 402b. The first ear 403a is fixed to the lower part of the base 1. The first ear 403a and the second ear 403b are rotatably connected by a third screw 403c and tightened by a nut, allowing the sleeve 402b to swing in a plane perpendicular to the adjusting rod 2 to adapt to angle changes during tilt adjustment. The telescopic part 402 and the rotating part 403 work together to adjust the tilt angle of the adjusting rod 2. When it is necessary to change the angle of the tachometer motor 3, the operator rotates the nut 402c at the upper end of the sleeve 402b, driving the telescopic rod 402a to move axially, thereby changing the overall length of the telescopic part 402. The movement of the telescopic rod 402a is transmitted to the spring 401a of the elastic part 401 through the second screw 401c, causing the spring 401a to undergo tensile or compressive deformation, forming an elastic preload. This preload acts on the second end of the adjusting rod 2, pushing the adjusting rod 2 to rotate around the hinge point on the upper part of the base 1, thereby adjusting the tilt angle α. During this process, the rotating part 403 at the lower end of the sleeve 402b swings synchronously, ensuring that the telescopic part 402 is always subjected to axial force, avoiding lateral stress from affecting the adjustment accuracy and structural stability.

[0043] Reference Figure 1 and Figure 2 The base 1 also has multiple magnetic blocks 102 at its lower part, used to fix the base 1 to the surface of the device under test. There are four magnetic blocks 102 arranged on the base plate. Each magnetic block 102 is embedded in the base plate and equipped with a manually operated rotary magnetic switch. By rotating the switch 90°, the working state of the magnetic block 102 can be switched. When the magnetic conductor of the switch is aligned with the permanent magnet, the magnetic lines of force pass through the base plate and form a closed loop with the surface of the device under test, generating an attraction force. When the switch is rotated to the cut-off position, the magnetic lines of force form a closed loop internally, and the external magnetic force decays to near zero. This design allows operators to quickly position and disassemble the base 1, and the four independent switches can be selectively activated according to the flatness of the device surface, ensuring stable fixation on discontinuous planes.

[0044] Reference Figure 7This illustration shows an embodiment of a traction machine equipped with an adjustment device. The traction machine 5 mainly includes a traction sheave 501, a drive motor 502, and the aforementioned adjustment device. The drive motor 502 serves as a power source, and its output end is connected to the central shaft of the traction sheave 501 via a coupling 301, driving the traction sheave 501 to rotate. The base 1 of the adjustment device is fixed to the frame of the traction machine 5. The speed measuring motor 3 at the first end of the adjustment rod 2 forms a rotational abutment relationship with the circumferential wall of the traction sheave 501 via the coupling 301 and the drive wheel 302. During the operation of the traction sheave 501, the drive wheel 302 rotates synchronously due to friction, and the speed measuring motor 3 converts the rotational speed signal into an electrical signal output, realizing real-time monitoring of the rotational speed of the traction sheave 501.

[0045] The traction machine 5 is internally equipped with an encoder as the primary speed feedback component, while an externally configured test motor 3 forms a secondary speed feedback mechanism. Another tachometer motor is mounted on the wire rope, creating a dual-speed monitoring system. This system calculates the amount of slippage of the wire rope on the traction sheave 501 by comparing the speed data from the two tachometer motors. This effectively solves the problem of missed slippage detection caused by insufficient traction force of the traction sheave 501 on the wire rope in the traditional single-speed monitoring mode. It can promptly detect potential risks, avoid safety accidents caused by undetected large slippage, and improve the safety and reliability of elevator operation.

[0046] Based on the aforementioned traction machine 5, an elevator testing device constructs a simulated operation testing system, which mainly includes the traction machine 5, rope 503, car, and counterweight. The traction machine 5 provides power and speed monitoring functions for the system. The rope 503 wraps around the groove of the traction sheave 501, forming a closed loop, serving as the force transmission medium between the car and the counterweight. The car is connected to one end of the rope 503 and contains a load simulation component to simulate the passenger weight during actual elevator operation. The counterweight is connected to the other end of the rope 503, and its weight can be adjusted according to testing requirements to balance the load on the car and ensure the operational stability of the traction machine 5. During elevator testing, the drive motor 502 drives the traction sheave 501 to rotate, and the rope 503 pulls the car and counterweight in relative motion, simulating the elevator's lifting and lowering process. The speed measuring motor 3 of the adjustment device collects the speed data of the traction sheave 501. By adjusting the longitudinal, lateral, height, and tilt angle functions of the device, it can be adapted to different specifications of traction sheaves 501. At the same time, it facilitates the rapid deployment of the device in various testing scenarios, effectively improving testing efficiency and data accuracy.

[0047] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention should be considered equivalent substitutions and are included within the protection scope of the present invention. The embodiments described in this disclosure are intended as non-limiting examples, and other embodiments may take various and alternative forms. Furthermore, the drawings are not necessarily to scale and may present simplified expressions of various features of the present disclosure, including, for example, specific dimensions, orientations, positions, and shapes. Details associated with such features will be determined in part by the intended application and usage environment of the described embodiments.

[0048] The detailed description and accompanying drawings are supporting and descriptive of this teaching, but the scope of this teaching is defined only by the claims. While the best mode and some other embodiments for carrying out this teaching have been described in detail, various alternative designs and embodiments exist for practicing the teaching as defined in the appended claims. Furthermore, this disclosure expressly includes combinations and sub-combinations of the elements and features set forth above and below.

Claims

1. An adjustment device for a traction sheave speed measuring motor, characterized in that, include: A vertically arranged base, wherein an adjusting rod is rotatably provided on the upper part of the base, the adjusting rod is detachably connected to the base, and a plurality of first mounting holes are provided at intervals along the height direction on the upper part of the base for adjusting the height of the adjusting rod; A speed measuring motor is disposed at the first end of the adjusting rod, and its output end rotates and abuts against the circumferential wall of the traction sheave; An angle adjustment assembly includes an elastic part and a telescopic part arranged in series. The elastic part is connected to the second end of the adjustment rod, and the telescopic part is rotatably connected to the lower part of the base. The tilt angle of the adjustment rod is adjusted by elastic preload and telescopic length.

2. The adjusting device according to claim 1, characterized in that, The adjusting rod has a plurality of second mounting holes spaced apart along its length, and the first mounting holes and the second mounting holes are detachably connected by bolts.

3. The adjusting device according to claim 1, characterized in that, The output end of the tachometer motor is connected in sequence to a coupling and a drive wheel, and the drive wheel rotates and abuts against the circumferential wall of the traction sheave.

4. The adjusting device according to claim 1, characterized in that, The elastic part includes symmetrically arranged springs. The upper ends of the two springs are connected to the second end of the adjusting rod via a first screw, and the lower ends of the two springs are connected to the telescopic part via a second screw.

5. The adjusting device according to claim 4, characterized in that, The telescopic part includes a telescopic rod and a sleeve. The telescopic rod is partially received in the sleeve and moves axially along the sleeve via a threaded connection. One end of the telescopic rod is connected to the second screw, and the lower end of the sleeve is rotatably connected to the lower part of the base.

6. The adjusting device according to claim 5, characterized in that, The lower end of the sleeve also has a rotating part, which includes a first ear seat and a second ear seat. The second ear seat is rotatably connected to the first ear seat and connected to the lower end of the sleeve. The first ear seat is fixed to the lower part of the base.

7. The adjusting device according to claim 6, characterized in that, The first ear seat and the second ear seat are rotatably connected by a third screw.

8. The adjusting device according to claim 1, characterized in that, The lower part of the base is also provided with multiple magnetic blocks, which are used to fix the base to the surface of the device under test.

9. A traction machine, characterized in that, include: Traction wheel; A drive motor, the output end of which is connected to the traction wheel drive; According to any one of claims 1 to 8, the driving wheel of the speed measuring motor rotates and abuts against the circumferential wall of the traction sheave.

10. An elevator testing device, characterized in that, include: The traction machine according to claim 9; A rope, which is wound around the traction sheave; The car is connected to one end of the rope; A counterweight is attached to the other end of the rope.

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