Automatic belt mounting device of belt transmission equipment

Abstract

The utility model discloses an automatic belt mounting device of belt transmission equipment, which comprises a mounting bottom plate and a telescopic cylinder arranged on one side of the mounting bottom plate, and guide grooves designed according to an ideal belt tensioning running track are respectively arranged on the mounting bottom plate on two sides of the telescopic cylinder. Guide grooves are formed in the two sides of the telescopic air cylinder, the guide grooves in the two sides are of a necking structure in the belt tensioning direction and are symmetrically arranged, an air cylinder sliding block is arranged at the telescopic end of the telescopic air cylinder, mounting idle wheels are hinged and fixed to the air cylinder sliding block through connecting rods respectively, the connecting positions of the connecting rods and the mounting idle wheels are arranged in the guide grooves, and guide limiting of the mounting idle wheels is achieved through the guide grooves. And the mounting idle pulley is positioned on the other side of the mounting bottom plate, and the mounting idle pulley, a tensioning wheel of the main tensioning cylinder and a belt pulley of the tested product are positioned on the same belt mounting plane. According to the utility model, the control logic in the equipment operation process is simplified while the equipment structure is simplified, the requirements on equipment installation and debugging are effectively reduced, and the reliability of equipment operation is effectively ensured.

Description

Technical Field

[0001] This utility model belongs to the field of belt-driven product testing technology, specifically relating to an automatic belt mounting device for belt-driven equipment. Background Technology

[0002] When performing performance testing on belt-driven products (such as generators and automotive air conditioning compressors) after they come off the production line, it is necessary to load, tighten, unload, and loosen the belt for each product. Manually loading the belt is gradually being prohibited by manufacturers due to the risk of hand injuries and low work efficiency. In order to ensure the personal safety of operators and improve work efficiency, manufacturers have put forward the demand for automatic belt loading.

[0003] like Figure 1 As shown, in the prior art, the automatic belt loading mechanism usually requires two or three cylinders to work together with the main tensioning cylinder to achieve automatic belt loading. Typically, two left and right translation cylinders (or one parallel opening and closing cylinder) are responsible for driving the idler pulley of the belt loading mechanism to open and close, in order to spread the belt. A lifting cylinder is responsible for the up and down movement of the entire loading mechanism to disengage the idler pulley from the belt. In order to ensure that the loading mechanism can work normally, the lifting speed of the lifting cylinder and the main tensioning cylinder needs to be adjusted to be strictly consistent before operation, so as to ensure that the main tensioning cylinder and the lifting cylinder of the loading mechanism can lift and lower synchronously.

[0004] During the belt loading and tensioning process, the main tensioning cylinder and the lifting cylinder of the loading mechanism need to descend synchronously. When the idler wheel of the loading mechanism descends to below the belt pulley of the product being tested, the translation cylinder of the idler wheel is contracted, causing the idler wheel to retract and disengage from the belt. The main tensioning cylinder continues to descend, ultimately achieving the purpose of loading and tensioning the belt. During the belt loosening and unloading process, the idler pulley needs to be opened first by the translation cylinder, and then the main tension cylinder needs to be released to loosen the belt. Because the force of the main tension cylinder is much greater than the force of the translation cylinder in the mounting mechanism, the idler pulley of the mounting mechanism cannot be opened by the translation cylinder before the main tension cylinder is activated and the belt is loosened. To ensure that the idler pulley of the mounting mechanism can open first and then rise to avoid the pulley of the product being tested, the main tension cylinder usually needs to be released first to loosen the belt. The idler pulley consumes the travel of the loose part of the belt before the mounting lifting cylinder is activated. Then, the belt and pulley are unloaded by the synchronous rise of the main tension cylinder and the lifting cylinder in the mounting mechanism.

[0005] When the automatic belt loading mechanism described above uses two translation cylinders to drive the idler pulleys, it places even higher demands on the consistency of the translation speeds of the two cylinders. While using a single parallel opening / closing cylinder to drive the idler pulleys solves the synchronization problem, the force of the main tensioning cylinder is still much greater than the force of the translation cylinder driving the idler pulleys. This can lead to the idler pulleys not opening and closing properly when the belt is tensioned or loosened. Therefore, it is necessary to control the sequence of cylinders logically or increase the force of the translation cylinders in the belt loading mechanism to ensure normal operation. When adjusting the control logic, the program delay must be corrected after each change in cylinder speed. Otherwise, if the lifting cylinder of the loading mechanism starts too early, the entire belt loading mechanism will begin to rise before the two idler pulleys have opened, and the idler pulleys may collide with the tested motor pulley before avoiding it. If the lifting cylinder of the loading mechanism starts too late, the belt will become completely slack and detach from the pulley, resulting in belt detachment and unloading failure. Increasing the force of the translation cylinder of the mounting mechanism can be difficult to achieve due to limitations in cylinder selection, space constraints, and increased costs.

[0006] Therefore, the above-mentioned automatic belt loading mechanism has the disadvantages of complex structure, high cost, high debugging requirements, complex control logic and low reliability. Manufacturers urgently need an automatic belt loading device with a simpler structure, lower cost, simple and convenient maintenance and higher reliability. Utility Model Content

[0007] The technical problem solved by this utility model is to provide an automatic belt mounting device for belt drive equipment that is more cost-effective and has a more compact structure.

[0008] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: an automatic belt mounting device for belt drive equipment, characterized in that it includes a mounting base plate and a telescopic cylinder disposed on one side of the mounting base plate. The mounting base plates on both sides of the telescopic cylinder are respectively provided with guide grooves designed according to the ideal belt tensioning trajectory, and the guide grooves on both sides are symmetrically arranged with a narrowing structure along the belt tensioning direction. The telescopic end of the telescopic cylinder is provided with a cylinder slider, and a mounting idler wheel is respectively fixed on the cylinder slider by a connecting rod. The connection between the connecting rod and the mounting idler wheel is disposed in the guide groove, and the guide groove realizes the guiding and limiting of the mounting idler wheel. The mounting idler wheel is located on the other side of the mounting base plate, and the mounting idler wheel, the tensioning wheel of the main tensioning cylinder, and the pulley of the product being tested are on the same belt mounting plane.

[0009] Furthermore, the mounting base plate has connecting ear plates at the upper and lower ends of the middle part of one side. The telescopic cylinder is installed and fixed between the upper and lower connecting ear plates. The two idler wheels are connected to the cylinder slider through connecting rods and perform synchronous mirror telescopic movement by means of guide groove constraint.

[0010] Furthermore, the connecting rods are symmetrically installed on both sides of the cylinder slider. One end of the connecting rod is hinged to the cylinder slider by a pin, and the other end of the connecting rod is fixedly connected to the idler wheel by a pin. The pin connecting the idler wheel is set in the guide groove and rolls with the guide groove. The cylinder slider drives the two idler wheels simultaneously, and the guide groove restricts the running trajectory of the two idler wheels.

[0011] Furthermore, the guide groove is composed of a wide opening section, a transition section, and a narrow opening section arranged sequentially from top to bottom. The spacing between the wide opening sections of the guide groove is greater than the outer diameter of the pulley of the product under test, the spacing between the narrow opening sections of the guide groove is less than the outer diameter of the pulley of the product under test, and the vertical height between the transition sections of the guide groove is greater than the outer diameter of the pulley of the product under test. This is to effectively ensure that the idler pulley no longer interferes with or collides with the pulley of the product under test during belt loading and unloading.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects: It simplifies the previous two- or three-cylinder structure to a single-cylinder structure, making the structure simpler; while simplifying the equipment structure, it also simplifies the control logic during equipment operation, effectively reducing the requirements for equipment installation and debugging while ensuring the reliability of equipment operation; through the guide groove and connecting rod idler wheel structure, it effectively ensures the synchronization of the two idler wheels; by rationally designing the guide groove to constrain the running trajectory of the idler wheels, it effectively solves the problem of collisions with the pulley of the tested product caused by asynchronous operation or mismatched control logic between the main tensioning cylinder and the telescopic cylinder in the mounting mechanism. Even if the running speed of the main tensioning cylinder or the telescopic cylinder in the mounting mechanism is adjusted, there is no need to adjust the control program, greatly increasing the reliability of the structural operation; this utility model is more cost-effective and has a more compact structure, making it particularly suitable for applications with limited equipment space. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an automatic belt loading mechanism in the prior art.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of this utility model.

[0016] Figure 4 This is a diagram showing the usage state of this utility model.

[0017] Figure 5 This is a reference diagram showing the usage state of this utility model.

[0018] In the diagram: 1-Mounting base plate, 2-Telescopic cylinder, 3-Guide groove, 4-Cylinder slider, 5-Connecting rod, 6-Hanging idler wheel, 7-Main tension cylinder, 8-Tensioner wheel, 9-Product under test, 10-Pulley, 11-Belt, 12-Connecting ear plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 2-5 As shown, an automatic belt mounting device for a belt drive includes a mounting base plate 1 and a telescopic cylinder 2 disposed in the middle of one side of the mounting base plate 1. The mounting base plate 1 on both sides of the telescopic cylinder 2 is provided with guide grooves 3 designed according to the ideal belt tensioning trajectory. The guide grooves 3 on both sides are symmetrically arranged with a narrowing structure from top to bottom. The telescopic end of the telescopic cylinder 2 is provided with a cylinder slider 4. The cylinder slider 4 is hinged to a mounting idler wheel 6 by a connecting rod 5. The connection between the connecting rod 5 and the mounting idler wheel 6 is disposed in the guide groove 3, and the mounting idler wheel 6 is guided and limited by the guide groove 3. The mounting idler wheel 6 is located on the other side of the mounting base plate 1, and the mounting idler wheel 6, the tensioning wheel 8 of the main tensioning cylinder 7, and the pulley 10 of the product being tested 9 are on the same belt 11 mounting plane.

[0021] The mounting base plate 1 of this invention has connecting ear plates 12 at its upper and lower ends on one side. A telescopic cylinder 2 is installed and fixed between the upper and lower connecting ear plates 12. Two idler wheels 6 are connected to the cylinder slider 4 via connecting rods 5, and perform synchronous mirror telescopic movements constrained by guide grooves 3. The connecting rods 5 are symmetrically installed on both sides of the cylinder slider 4. One end of the connecting rod 5 is hinged to the cylinder slider 4 via a pin, and the other end of the connecting rod 5 is fixedly connected to the idler wheels 6 via a pin. The pin connecting the idler wheels 6 is located within the guide groove 3 and rolls in cooperation with the guide groove 3. The cylinder slider 4 simultaneously drives the two idler wheels 6, and the guide groove 3 restricts the running trajectory of the two idler wheels 6. The guide groove 3 of this utility model is composed of a wide opening section, a transition section and a narrow opening section arranged sequentially from top to bottom. The interval between the wide opening sections of the guide groove 3 arranged opposite each other is greater than the outer diameter of the pulley 10 of the product under test 9. The interval between the narrow opening sections of the guide groove 3 arranged opposite each other is less than the outer diameter of the pulley 10 of the product under test 9. The vertical height between the transition sections of the guide groove 3 arranged opposite each other is greater than the outer diameter of the pulley 10 of the product under test 9. This is used to effectively ensure that the idler pulley 6 no longer interferes with or collides with the pulley 10 of the product under test 9 during the loading and unloading of the belt 11.

[0022] This utility model's automatic belt loading device consists of a mounting base plate, a telescopic cylinder, and two loading idlers connected by connecting rods for synchronous transmission. The mounting base plate is equipped with a pair of guide grooves designed according to the ideal belt loading and tensioning trajectory, which can guide and limit the loading idlers. The guide grooves symmetrically restrict the running trajectory of the two loading idlers. The two loading idlers are fixed to the slider of the telescopic cylinder by symmetrical connecting rods. The telescopic cylinder is used to realize the overall synchronous lifting and lowering of the loading idlers in the loading mechanism, thereby realizing the synchronous contact and disengagement of the loading idlers and the belt in the loading mechanism. Since the two loading idlers are connected by connecting rods and guided and constrained by guide grooves, the loading idlers can only move synchronously according to the designed running trajectory, which can smoothly complete the loading, tensioning, loosening and unloading of the belt.

[0023] In practical application, the wider gap between the two opposing guide grooves corresponds to the maximum pulley diameter of the product under test, effectively ensuring that the two idler pulleys can reliably detach from the maximum diameter pulley when supporting the belt in this state. The narrower gap between the two opposing guide grooves corresponds to the minimum pulley diameter, effectively ensuring that the outer edges of the two idler pulleys are smaller than the minimum diameter pulley in this state, allowing the two idler pulleys to be hidden inside the pulley and reliably detach from the drive belt. The transition position between the wide and narrow gaps of the two opposing guide grooves corresponds to the height of the pulley of the product under test. As long as the guide groove reaches its widest gap position below the lower edge of the pulley of the product under test (a certain safety margin can be reserved in the design to accommodate different heights and pulley diameters of the product under test), the risk of interference or collision between the idler pulleys and the pulley of the product under test during belt loading and unloading can be guaranteed.

[0024] During the belt tensioning and loading process, the main tensioning cylinder moves first. Since the force of the telescopic cylinder in the loading mechanism is much smaller than that of the main tensioning cylinder, the main tensioning cylinder tensions the belt while simultaneously driving the loading mechanism to passively contract. Once the main tensioning cylinder has reached its tensioning position, the telescopic cylinder of the loading mechanism is driven to continue moving along the direction of the main tensioning cylinder. The loading idler pulleys move synchronously under the constraint of the two guide grooves, first descending vertically below the outer edge of the pulley of the tested product along the guide grooves, and then gradually retracting below the pulley of the tested product. Through the further movement of the telescopic cylinder of the loading mechanism, the two loading idler pulleys continue to move downwards and completely detach from the belt, thus completing the belt loading and tensioning process.

[0025] During the belt unloading and release process, the telescopic cylinder in the mounting mechanism resets first, followed by the main tensioning cylinder. Since the force of the telescopic cylinder in the mounting mechanism is much smaller than that of the main tensioning cylinder, the belt remains taut until the main tensioning cylinder begins to move. When the main tensioning cylinder begins to reset, the belt slack caused by its reset is immediately consumed by the reset and opening motion of the two mounting idler pulleys driven by the telescopic cylinder in the mounting mechanism. This ensures that the belt will not slack off during the entire unloading and release process. After the main tensioning cylinder completes its reset stroke, the mounting mechanism continues to reset under the action of the telescopic cylinder until the belt is completely detached from the tested product, thus completing the belt unloading and release process.

[0026] This invention simplifies both the equipment structure and the control logic during operation, effectively reducing the requirements for equipment installation and commissioning while ensuring reliable operation. The guide groove and connecting rod idler wheel structure effectively ensure the synchronization of the two idler wheels. By rationally designing the guide groove to constrain the idler wheel's trajectory, this invention effectively solves the problem of collisions with the tested product's pulley caused by asynchronous operation between the main tensioning cylinder and the telescopic cylinder in the mounting mechanism, or by mismatched control logic. Even if the speed of the main tensioning cylinder or the telescopic cylinder in the mounting mechanism is adjusted, no further adjustments to the control program are required, greatly increasing the reliability of the structural operation.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An automatic belt mounting device for belt-driven equipment, characterized in that... The device includes a mounting base plate and a telescopic cylinder mounted on one side of the mounting base plate. The mounting base plates on both sides of the telescopic cylinder are respectively provided with guide grooves designed according to the ideal belt tensioning trajectory. The guide grooves on both sides are symmetrically arranged with a narrowing structure along the belt tensioning direction. The telescopic end of the telescopic cylinder is provided with a cylinder slider. The cylinder slider is respectively fixed with a hanging idler wheel by a connecting rod. The connection between the connecting rod and the hanging idler wheel is set in the guide groove, and the hanging idler wheel is guided and limited by the guide groove. The hanging idler wheel is located on the other side of the mounting base plate, and the hanging idler wheel, the tensioning wheel of the main tensioning cylinder, and the pulley of the product under test are on the same belt mounting plane.

2. The automatic belt mounting device for belt drive equipment according to claim 1, characterized in that: The mounting base plate has connecting ear plates at the top and bottom of one side. The telescopic cylinder is installed and fixed between the upper and lower connecting ear plates. Two idler wheels are connected to the cylinder slider through connecting rods and perform synchronous mirror telescopic motion by being constrained by guide grooves.

3. The automatic belt mounting device for belt drive equipment according to claim 1, characterized in that: The connecting rods are symmetrically installed on both sides of the cylinder slider. One end of the connecting rod is hinged to the cylinder slider by a pin, and the other end of the connecting rod is fixedly connected to the idler wheel by a pin. The pin connecting the idler wheel is set in the guide groove and rolls with the guide groove. The cylinder slider drives the two idler wheels at the same time, and the guide groove restricts the running trajectory of the two idler wheels.

4. The automatic belt mounting device for belt drive equipment according to claim 1, characterized in that: The guide groove is composed of a wide opening section, a transition section, and a narrow opening section arranged sequentially from top to bottom. The interval between the wide opening sections of the guide groove is greater than the outer diameter of the pulley of the product under test, the interval between the narrow opening sections of the guide groove is less than the outer diameter of the pulley of the product under test, and the vertical height between the transition sections of the guide groove is greater than the outer diameter of the pulley of the product under test. This is to effectively ensure that the idler pulley no longer interferes with or collides with the pulley of the product under test during belt loading and unloading.

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