Compact type walking transmission synchronous belt self-locking tensioning device

Abstract

The utility model provides a compact type walking transmission synchronous belt self-locking tensioning device which comprises a walking motor small belt wheel, a walking large belt wheel, a motor and a tensioning shaft seat. A support is installed on the tensioning shaft seat. The walking motor mounting plate is provided with a trapezoidal threaded block, the trapezoidal threaded block is provided with an inner trapezoidal thread and an outer trapezoidal thread, the tensioning screw penetrates through the two ends of the trapezoidal threaded block to be installed on the tensioning shaft seat and the support respectively, and the tensioning screw and the trapezoidal threaded block work in a matched mode through the trapezoidal threads to achieve the self-locking function; the compact type walking transmission synchronous belt self-locking tensioning device achieves the self-locking function, and long-term stability of tensioning force is ensured. By rotating the tensioning screw rod, the trapezoidal threaded block meshed with the tensioning screw rod moves along with the tensioning screw rod, so that the walking motor mounting plate and the motor are driven to move up and down, the distance between the large walking belt wheel and the small walking motor belt wheel is adjusted, and the tensioning force of the synchronous belt is rapidly and effectively adjusted.

Description

Technical Field

[0001] The present application relates to the field of tensioning devices, and in particular to a compact self-locking tensioning device for a traveling transmission synchronous belt. Background Art

[0002] With the continuous advancement of industrial automation technology, automated equipment such as multi-level shuttles are increasingly used in modern logistics, warehousing, and production lines. The efficient operation of these devices depends on the performance of their transmission systems, particularly the precision and stability of synchronous belt drives. Synchronous belt drives are widely used in various automated equipment and robots due to their high transmission precision, smooth operation, and low noise. Therefore, ensuring that the synchronous belt is properly tensioned at all times is crucial to improving the efficiency and stability of the equipment.

[0003] While traditional synchronous belt tensioners can meet tensioning requirements to a certain extent, they often suffer from complex structures, large space requirements, difficulty adjusting, and the tendency to loosen. These issues not only affect equipment stability and operational efficiency but also increase maintenance costs and downtime. The space requirements of traditional tensioners are particularly prominent in compact automated equipment such as multi-level shuttles.

[0004] In order to overcome the above problems and improve the performance of the synchronous belt transmission system, it is necessary to develop a synchronous belt tensioning device with a simple structure, small footprint, easy adjustment and high reliability. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a compact self-locking tensioning device for the synchronous belt of the running transmission. The internal trapezoidal thread set in the trapezoidal thread block and the external trapezoidal thread set in the tensioning screw work together, and the principle of the spiral lead angle being less than the friction angle is utilized. The self-locking tensioning device of the synchronous belt of the running transmission realizes the self-locking function, thereby ensuring the long-term stability of the tensioning force, preventing transmission failure caused by loosening, and improving the reliability of the entire system; by rotating the tensioning screw, the trapezoidal thread block engaged with it moves accordingly, thereby driving the running motor mounting plate and the motor to move up and down, adjusting the distance between the large running pulley and the small running motor pulley, and quickly and effectively realizing the adjustment of the tensioning force of the synchronous belt, thereby improving the transmission working efficiency.

[0006] Specifically, the utility model provides a compact walking transmission synchronous belt self-locking tensioning device, comprising: a small walking motor pulley 5, a large walking pulley 6, a motor 16, a tensioning shaft seat 3, which is arranged between the motor 16 and the small walking motor pulley 5, and a bracket 1 is installed on the tensioning shaft seat 3; a walking motor mounting plate 2, one side of which is connected to the bracket 1 and the other side is connected to the motor 16, and a trapezoidal thread block 19 is provided on the side of the walking motor mounting plate 2, and the trapezoidal thread block 19 is provided with an internal trapezoidal thread; the two ends of the tensioning screw 4 are cylindrical surfaces, so that the tensioning The screw 4 can rotate, and the middle section is provided with an external trapezoidal thread. The tensioning screw 4 passes through the trapezoidal thread block 19 and is respectively installed on the tensioning shaft seat 3 and the bracket 1 at both ends. The tensioning screw 4 and the trapezoidal thread block 19 work together through the trapezoidal thread, and the self-locking function is realized by using the principle that the spiral lead angle is less than the friction angle; when the tightening screw 4 is rotated, the trapezoidal thread block 19 engaged with it moves accordingly, thereby driving the running motor mounting plate 2 and the motor 16 to move up and down, adjusting the distance between the running large pulley 6 and the running motor small pulley 5, and realizing the adjustment of the tension of the synchronous belt.

[0007] Furthermore, the space between the bracket 1 and the traveling motor mounting plate 2 is a hollow structure.

[0008] Furthermore, a motor rotating shaft 13 is provided in the connection direction between the motor 16 and the traveling motor mounting plate 2 , and the motor rotating shaft 13 passes through the bracket 1 and the traveling motor mounting plate 2 to connect to the traveling motor small pulley 5 .

[0009] Furthermore, a first bearing 17 is installed on the upper end of the tensioning shaft seat 3 ; a second bearing 18 is installed on the bracket 1 , and the first bearing 17 and the second bearing 18 are used to install the tensioning screw 4 .

[0010] Furthermore, the cylindrical surface of the bottom end of the tensioning screw 4 is mounted on the first bearing 17 , and the cylindrical surface of the top end of the tensioning screw 4 is mounted on the second bearing 18 .

[0011] Furthermore, a hexagonal rotating piece 12 is fixedly installed on the top of the tensioning screw 4. Rotating the hexagonal rotating piece 12 drives the tensioning screw 4 to rotate, and at the same time drives the trapezoidal thread block 19 to move up and down; when the hexagonal rotating piece 12 is rotated in the forward direction, the trapezoidal thread block 19 moves downward, driving the running motor mounting plate 2 and the motor 16 to move downward, and the distance between the running large pulley 6 and the running motor small pulley 5 increases, thereby increasing the tension of the synchronous belt; when the hexagonal rotating piece 12 is rotated in the reverse direction, the trapezoidal thread block 19 moves upward, driving the running motor mounting plate 2 and the motor 16 to move upward, and the distance between the running large pulley 6 and the running motor small pulley 5 decreases, thereby reducing the tension of the synchronous belt.

[0012] Furthermore, when the synchronous belts on the small pulley 5 and the large pulley 6 of the running motor are working, the bolts connecting the motor mounting plate 2 and the bracket 1 are tightened and are in a fixed connection state, which helps to improve the stability of the tension of the synchronous belt; when rotating the hexagonal rotating part 12 to adjust the tension of the synchronous belt, first loosen the bolts in the waist-shaped holes connecting the motor mounting plate 2 and the bracket 1 to avoid hard friction between the motor mounting plate 2 and the bracket 1.

[0013] Furthermore, a waist-shaped hole is provided on the top of the traveling motor mounting plate 2 , one side of the traveling motor mounting plate 2 is connected to the bracket 1 by means of bolts passing through the waist-shaped hole, and the other side of the traveling motor mounting plate 2 is connected to the motor 16 by means of bolts.

[0014] Furthermore, the bracket 1 is mounted on the tensioning shaft seat 3 by means of bolts.

[0015] Working principle: When the compact walking transmission synchronous belt self-locking tensioning device is working, before rotating the hexagonal rotating part 12 to adjust the synchronous belt tension, it is necessary to first loosen the bolts in the waist-shaped hole connecting the motor mounting plate 2 and the bracket 1. Because when the synchronous belts on the small pulley 5 of the walking motor and the large pulley 6 of the walking motor are working, the bolts in the waist-shaped hole connecting the motor mounting plate 2 and the bracket 1 are tightened and are in a fixed connection state, preventing loosening caused by vibration during the operation of the synchronous belt, which leads to failure of the entire device and effectively improves the stability of the transmission equipment operation; after loosening the bolts in the waist-shaped hole, rotate the hexagonal rotating part 12 to avoid hard friction between the motor mounting plate 2 and the bracket 1; rotating the hexagonal rotating part 12 to drive the tensioning screw 4 to rotate, and the trapezoidal thread block 19 will move up and down along the tensioning screw 4. Since the helix angle of the trapezoidal thread is smaller than the friction angle, the trapezoidal thread block 19 will not be affected by gravity or When the hexagonal rotating member 12 is rotated in the reverse direction, the trapezoidal thread block 19 moves upward, driving the running motor mounting plate 2 and the motor 16 to move upward, and the distance between the running large pulley 6 and the running motor small pulley 5 is reduced, which reduces the tension of the synchronous belt.

[0016] Beneficial effects:

[0017] 1. The utility model realizes the self-locking function by cooperating with the tensioning screw and the trapezoidal thread block through the trapezoidal thread. The inclined surface design of the trapezoidal thread enables the thread to generate a radial locking force when subjected to axial force. This locking force increases with the increase of the axial force, effectively preventing loosening caused by long-term operation or external factors, enhancing the anti-loosening ability and improving the reliability of the equipment.

[0018] 2. The self-locking function of the utility model can more accurately maintain the preset tension during the tension adjustment process, improve the tension adjustment efficiency and the accuracy of the tension adjustment, keep the synchronous belt in the best working state, and thus improve the overall efficiency of the transmission system.

[0019] 3. The utility model can quickly adjust the tension of the synchronous belt through a simple rotation operation, which greatly shortens the adjustment time, reduces the operation difficulty and improves work efficiency.

[0020] 4. The motor mounting plate of the utility model is connected to the bracket by bolts. When the synchronous belts on the small pulley of the traveling motor and the large traveling pulley are working, the bolts connecting the motor mounting plate and the bracket are tightened and are in a fixed connection state, which effectively prevents loosening due to vibration and other reasons after long-term use, thereby improving the stability of the equipment.

[0021] 5. Traditional tensioning devices are large in size and are not suitable for applications with limited space. The compact design of this utility model enables the device to be used in a small space, providing greater flexibility for equipment layout. It is particularly suitable for automated production lines in modern industry that have extremely high requirements for space utilization.

[0022] 6. The design of the hexagonal rotating part of the utility model allows the user to easily rotate the tensioning screw to adjust the tension of the synchronous belt. This design does not require special tools and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the compact traveling transmission synchronous belt self-locking tensioner in use;

[0024] Figure 2 This is the second schematic diagram of the compact traveling transmission synchronous belt self-locking tensioning device in use;

[0025] Figure 3 This is a schematic diagram showing the connection between the compact traveling drive synchronous belt self-locking tensioner motor and the traveling motor mounting plate;

[0026] Figure 4 This is one of the schematic diagrams of the motor structure of the compact traveling transmission synchronous belt self-locking tensioning device;

[0027] Figure 5This is the second diagram of the motor structure of the compact traveling transmission synchronous belt self-locking tensioning device;

[0028] Figure 6 This is an exploded view of the compact traveling transmission synchronous belt self-locking tensioner motor and the traveling motor mounting plate;

[0029] Figure 7 This is a schematic diagram of the structure of the traveling motor mounting plate of the compact traveling transmission synchronous belt self-locking tensioning device;

[0030] Figure 8 This is an exploded view of the mounting plate structure of the compact traveling drive synchronous belt self-locking tensioner.

[0031] Figure 9 This is a schematic diagram of the motor operating status of the compact traveling transmission synchronous belt self-locking tensioner;

[0032] Numbers in the figure: 1-bracket, 2-travel motor mounting plate, 3-tensioning shaft seat, 4-tensioning screw, 5-travel motor small pulley, 6-travel large pulley, 7-pulley shaft, 8-transmission shaft, 9-driving wheel shaft seat left, 10-driving wheel shaft seat center, 11-travel wheel, 12-hexagonal rotating part, 13-motor rotating shaft, 14-coupling, 15-synchronous belt, 16-motor, 17-first bearing, 18-second bearing, 19-trapezoidal thread block. DETAILED DESCRIPTION

[0033] The technical solution will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] Example 1

[0035] like Figure 1 、 2 The compact self-locking tensioning device for a traveling transmission synchronous belt shown in the figure includes: a bracket 1, a traveling motor mounting plate 2, a tensioning shaft seat 3, a tensioning screw 4, a small pulley 5 of the traveling motor, a large traveling pulley 6, a pulley shaft 7, a transmission shaft 8, a left driving wheel seat 9, a middle driving wheel seat 10, a traveling wheel 11, a hexagonal rotating member 12, a motor rotating shaft 13, a coupling 14, a synchronous belt 15, a motor 16, a first bearing 17, a second bearing 18, and a trapezoidal thread block 19; the tensioning shaft seat 3 is arranged between the motor 16 and the small pulley 5 of the traveling motor, as shown in FIG. Figure 7 、 8 As shown, the tensioning shaft seat 3 is mounted on the bracket 1 by bolts; a first bearing 17 is mounted on the upper end of the tensioning shaft seat 3; a second bearing 18 is mounted on the bracket 1, and the first bearing 17 and the second bearing 18 are used to mount the tensioning screw 4, the bottom cylindrical surface of the tensioning screw 4 is mounted on the first bearing 17, and the top cylindrical surface of the tensioning screw 4 is mounted on the second bearing 18; Figure 3 、 4, 5, 6, a waist-shaped hole is provided above the traveling motor mounting plate 2, one side of the traveling motor mounting plate 2 is connected to the bracket 1 by bolts passing through the waist-shaped hole, and the other side is connected to the motor 16 by bolts, and a motor rotating shaft 13 is provided in the connection direction between the motor 16 and the traveling motor mounting plate 2, and the motor rotating shaft 13 passes through the bracket 1 and the traveling motor mounting plate 2 to connect to the traveling motor small pulley 5; the middle of the bracket 1 and the traveling motor mounting plate 2 is a hollow structure; as shown Figure 8 As shown, a trapezoidal thread block 19 is provided on the side of the traveling motor mounting plate 2, and the trapezoidal thread block 19 is provided with an internal trapezoidal thread; the two ends of the tensioning screw 4 are cylindrical surfaces, so that the tensioning screw 4 can rotate, and the middle section is provided with an external trapezoidal thread. The tensioning screw 4 passes through the trapezoidal thread block 19 and is respectively installed on the tensioning shaft seat 3 and the bracket 1, as shown. Figure 9 The tensioning screw 4 shown cooperates with the trapezoidal thread block 19 through the trapezoidal thread, and realizes the self-locking function by utilizing the principle that the helix angle is smaller than the friction angle; a hexagonal rotating member 12 is fixedly mounted on the top of the tensioning screw 4.

[0036] like Figure 1 、 2 As shown in , 9, when in use, first loosen the bolts in the waist-shaped holes connecting the motor mounting plate 2 and the bracket 1, and then rotate the hexagonal rotating piece 12 to avoid hard friction between the motor mounting plate 2 and the bracket 1; rotating the hexagonal rotating piece 12 drives the tensioning screw 4 to rotate, and the trapezoidal thread block 19 will move up and down along the tensioning screw 4. The trapezoidal thread block 19 moves up and down, driving the running motor mounting plate 2 and the motor 16 to move up and down, adjusting the distance between the running large pulley 6 and the running motor small pulley 5, and realizing the adjustment of the tension of the synchronous belt 15; when the hexagonal rotating piece 12 is rotated forward, the trapezoidal thread block 19 moves downward, driving the running motor mounting plate 2 and the motor 16 to move downward, and the distance between the running large pulley 6 and the running motor small pulley 5 increases, which increases the tension of the synchronous belt 15; reversely rotating the hexagonal rotating piece 12 When the gear train is running, the trapezoidal thread block 19 moves upward, driving the running motor mounting plate 2 and the motor 16 to move upward, and the distance between the running large pulley 6 and the running motor small pulley 5 is reduced, so that the tension of the synchronous belt 15 is reduced. Since the helix angle of the trapezoidal thread is smaller than the friction angle, the trapezoidal thread block 19 will not move by itself due to gravity or other vibrations, thereby achieving self-locking. Once the required tensioning force is reached, the rotation of the hexagonal rotating part 12 is stopped, and the trapezoidal thread block 19 will be locked in the current position, maintaining the tension of the synchronous belt 15; since the helix angle of the trapezoidal thread is smaller than the friction angle, the trapezoidal thread block 19 will not move by itself due to gravity or other vibrations, thereby achieving self-locking. Once the required tensioning force is reached, the rotation of the hexagonal rotating part 12 is stopped, and the trapezoidal thread block 19 will be locked in the current position, maintaining the tension of the synchronous belt.

Claims

1. A compact self-locking tensioning device for a traveling transmission synchronous belt, comprising: Small pulley of the traveling motor (5), Large walking pulley(6), Motor (16); It is characterized by: Also includes: A tensioning shaft seat (3) is provided between the motor (16) and the small pulley (5) of the traveling motor, and the tensioning shaft seat (3) is mounted on the bracket (1); A running motor mounting plate (2) is connected to the bracket (1) on one side and to the motor (16) on the other side. A trapezoidal thread block (19) is provided on the side of the running motor mounting plate (2), and the trapezoidal thread block (19) is provided with an internal trapezoidal thread. The two ends of the tensioning screw (4) are cylindrical surfaces, so that the tensioning screw (4) can rotate. The middle section is provided with an external trapezoidal thread. The tensioning screw (4) passes through the trapezoidal thread block (19) and the two ends are respectively installed on the tensioning shaft seat (3) and the bracket (1). The tensioning screw (4) and the trapezoidal thread block (19) work together through the trapezoidal thread to achieve a self-locking function. The tightening screw (4) is rotated, and the trapezoidal thread block (19) meshed therewith moves accordingly, thereby driving the running motor mounting plate (2) and the motor (16) to move up and down, adjusting the distance between the running large pulley (6) and the running motor small pulley (5), and realizing the adjustment of the tension of the synchronous belt.

2. A compact self-locking tensioning device for a traveling transmission synchronous belt according to claim 1, characterized in that: The bracket (1) and the traveling motor mounting plate (2) are hollow in the middle.

3. The compact self-locking tensioning device for a traveling transmission synchronous belt according to claim 2, characterized in that: A motor rotating shaft (13) is provided in the connection direction between the motor (16) and the traveling motor mounting plate (2), and the motor rotating shaft (13) passes through the bracket (1) and the traveling motor mounting plate (2) to connect to the traveling motor small pulley (5).

4. The compact self-locking tensioning device for a traveling transmission synchronous belt according to claim 1, characterized in that: A first bearing (17) is installed on the upper end of the tensioning shaft seat (3); a second bearing (18) is installed on the bracket (1), and the first bearing (17) and the second bearing (18) are used to install the tensioning screw (4).

5. The compact self-locking tensioning device for a traveling transmission synchronous belt according to claim 4, characterized in that: The cylindrical surface at the bottom end of the tensioning screw (4) is mounted on the first bearing (17), and the cylindrical surface at the top end of the tensioning screw (4) is mounted on the second bearing (18).

6. The compact self-locking tensioning device for a traveling transmission synchronous belt according to claim 5, characterized in that: A hexagonal rotating member (12) is fixedly mounted on the top of the tensioning screw (4). Rotating the hexagonal rotating member (12) drives the tensioning screw (4) to rotate, and at the same time drives the trapezoidal thread block (19) to move up and down. When the hexagonal rotating member (12) is rotated in the forward direction, the trapezoidal thread block (19) moves downward, drives the running motor mounting plate (2) and the motor (16) to move downward, increases the distance between the running large pulley (6) and the running motor small pulley (5), and increases the tension of the synchronous belt. When the hexagonal rotating member (12) is rotated in the reverse direction, the trapezoidal thread block (19) moves upward, drives the running motor mounting plate (2) and the motor (16) to move upward, decreases the distance between the running large pulley (6) and the running motor small pulley (5), and reduces the tension of the synchronous belt.

7. The compact self-locking tensioning device for a traveling transmission synchronous belt according to claim 6, characterized in that: A waist-shaped hole is provided above the traveling motor mounting plate (2); one side of the traveling motor mounting plate (2) is connected to the bracket (1) by bolts passing through the waist-shaped hole, and the other side is connected to the motor (16) by bolts.

8. The compact self-locking tensioning device for a traveling transmission synchronous belt according to claim 1, characterized in that: The tensioning shaft seat (3) is mounted on the bracket (1) via bolts.

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