Device for preventing derailment and deviation of tensioning trolley

Abstract

The utility model discloses an anti-derailment and anti-deviation device for tensioning a trolley, which is characterized in that an adjusting device is connected to the bottom end of a trolley body, the adjusting device drives a gear to rotate by a driving motor, and after the gear drives meshed racks on two sides to slide to be positioned, a limit stop is attached to the racks; when the gear rotates reversely, the limiting check block slides, the rack is prevented from moving through the acting force of the springs on the two sides, when the driving motor stops, the gear input shaft also synchronously stops rotating, meanwhile, the groove-shaped walking wheels of the trolley body are matched with the rectangular guide rails, and when the trolley body moves, the groove-shaped walking wheels are driven by the motor to move. The groove-shaped walking wheel moves on the rectangular guide rail, the adjusting device further limits the trolley body to be guided in the two sliding grooves, and during disassembly, the gear rotates, the limiting stop block abuts against the stop block, the spring is compressed, the rack is moved, and then meshing transmission is carried out, in addition, when the trolley shakes, the limiting wheel makes contact with the top end of the first sliding groove, and the limiting stop block and the first sliding groove make contact with each other. Jumping displacement caused by uneven stress of the tensioning trolley is limited, and therefore the phenomenon that the tensioning trolley derails is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of tensioning trolleys of belt conveyors, and particularly relates to a derailment prevention and deviation prevention device for a tensioning trolley. Background Technique

[0002] As an indispensable device in industrial and agricultural production, the belt conveyor has long played a key role and is currently developing steadily towards the direction of long distance, large conveying capacity and intelligence. In the operation of the belt conveyor, the tensioning trolley is a crucial component, and its main function is to maintain the tension of the conveyor belt to ensure the normal operation of the belt conveyor. However, in the actual production process, due to reasons such as the start-up, braking of the belt conveyor and the deviation of the conveyor belt, the tension of the conveyor belt changes unstably. When the winch pulls the tensioning trolley, due to uneven force, it may ultimately lead to problems such as the deviation and even derailment of the tensioning trolley.

[0003] Once the tensioning trolley deviates or derails, it usually takes several hours to stop the machine for manual maintenance, which not only causes economic losses to the enterprise, but also consumes a large amount of time and human resources. Therefore, there is an urgent need to design an effective derailment prevention and deviation prevention device to solve the above problems and improve the reliability and operation efficiency of the belt conveyor. The introduction of this new device will help reduce equipment failures and downtime, thereby reducing the operating costs of the enterprise and improving production efficiency and safety. Content of the Utility Model

[0004] The purpose of the utility model is to provide a derailment prevention and deviation prevention device for a tensioning trolley to solve the problems of deviation or derailment of the tensioning trolley.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A derailment prevention and deviation prevention device for a tensioning trolley, including a channel steel frame. On the left and right channel steel frames, two sliding grooves are symmetrically and respectively arranged at different heights. At the bottom end of the first sliding groove, a tensioning trolley guide rail is connected, and a tensioning trolley is connected to the tensioning trolley guide rail. An adjusting device is connected in the second sliding groove, and the adjusting device is installed at the bottom end of the tensioning trolley.

[0006] On the left and right sides of the tensioning trolley, a pair of wheel brackets are respectively connected. The wheel brackets are located at the front and rear ends of the tensioning trolley. The moving component includes a grooved traveling wheel, a limiting wheel and the wheel bracket. The grooved traveling wheel and the limiting wheel are arranged at different heights on the wheel bracket. The grooved traveling wheel is placed on the tensioning trolley guide rail, and the rectangular groove on the circumferential outer side of the grooved traveling wheel is matched with the tensioning trolley guide rail. On the left and right sides of the tensioning trolley, a plurality of roller bearing seats are symmetrically and respectively arranged. A redirecting roller and a pressing roller are respectively connected between the two roller bearing seats. A belt is placed on the redirecting roller and the pressing roller. At the middle part of the rear end of the tensioning trolley, a tension pulley is connected.

[0007] The adjusting device is driven by a driving motor and includes a gear, a rack, a spring, and a limit stop block.

[0008] The gear is installed in the middle of the bottom end of the tensioning trolley. The input shaft of the gear is connected to the output shaft of the driving motor. A pair of racks are respectively meshed on the outer side of the gear. The two racks are parallel and oppositely arranged. The top end of the rack abuts against the inner wall of the second sliding groove and is slidably matched with the second sliding groove. Fixing blocks are respectively fixedly connected to the upper and lower ends of the rack. A reset rod is fixedly connected to the middle of the fixing block. A blocking block is fixedly connected to the top end of the reset rod. A limit stop block is slidably matched on the reset rod. Springs are respectively arranged between the limit stop block and the reset rod and the blocking block, sleeved on the outer circumference of the reset rod. One end of the spring abuts against the fixing block, and the other end abuts against the limit stop block. One end of the other spring abuts against the blocking block, and the other end abuts against the limit stop block.

[0009] Preferably, the limit wheel is installed on the upper side of the wheel bracket. The limit wheel contacts the top end of the first sliding groove and has a gap therebetween, which is convenient for installation and limits the upward displacement of the tensioning trolley when it vibrates.

[0010] Preferably, the trolley guide rail is distributed along the entire length of the channel steel frame, and the cross section of the guide rail is rectangular.

[0011] Preferably, the limit stop block is conically arranged. The limit stop block cooperates with the spring and has a gap with the bottom end of the rack, which is used for limiting in cooperation with the spring after reaching a predetermined position.

[0012] Preferably, it further includes a guide frame. The guide frame is installed at the top end of the rack. Guide wheels are respectively connected to the upper and lower ends of the guide frame, and the guide wheels are slidably matched with the second sliding groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] By connecting an adjusting device to the bottom end of the trolley body, the adjusting device is driven by a driving motor to rotate a gear, and the gear drives the racks meshed on both sides to slide to the predetermined position. After that, the limit stop block fits with the rack. When the gear jitters, when the gear rotates forward, the limit stop block slides to make the rack fit more tightly. When the gear rotates backward, the limit stop block slides. Through the acting force of the springs on both sides, the displacement of the rack is prevented. Moreover, when the driving motor stops, the input shaft of the gear also stops rotating synchronously. At the same time, the grooved running wheels of the trolley body match the rectangular guide rails. When moving, the grooved running wheels move on the rectangular guide rails, and the adjusting device further limits the guiding of the trolley body in the two sliding grooves. When disassembling, the gear rotates, the limit stop block abuts against the blocking block, the spring is compressed, the rack is moved, and then meshing transmission is carried out. In addition, when the trolley jitters, the limit wheel contacts the top end of the first sliding groove, restricting the jumping displacement of the tensioning trolley caused by uneven force, thereby preventing the tensioning trolley from derailing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a side view of the anti-derailing and anti-deviation tensioning trolley of the present invention;

[0016] Figure 2 FIG. is a front view of the anti-derailing and anti-deviation tensioning trolley of the present invention;

[0017] Figure 3 FIG. is a schematic diagram of the mutual cooperation between the wheel assembly and the rectangular guide rail of the present invention;

[0018] Figure 4 FIG. is a schematic structural diagram of the adjusting device of the present invention;

[0019] In the figure: 1. trolley body; 2. pressing roller; 3. roller bearing seat; 4. redirecting roller; 5. roller scraper; 6. pulley; 7. wheel bracket; 8. grooved running wheel; 9. limit wheel; 10. channel steel frame; 11. wheel assembly; 12. rectangular guide rail; 13. adjusting device; 14. gear; 15. rack; 16. spring; 17. limit stop block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1: Please refer to Figures 1-4 , an embodiment provided by the present utility model: An anti-derailment and anti-deviation device for a tensioning trolley, including a channel steel frame 10, which provides the overall structural support and a fixed foundation, enabling the system to be stably installed and operated. Two symmetrically arranged sliding grooves with different heights are respectively opened on the left and right channel steel frames 10. The bottom end of the first sliding groove is connected with a tensioning trolley guide rail, which is located in the first sliding groove and is used to fix and guide the movement track of the tensioning trolley. A tensioning trolley is connected to the tensioning trolley guide rail. An adjusting device 13 is connected in the second sliding groove. The adjusting device 13 is installed at the bottom end of the tensioning trolley. The first sliding groove and the second sliding groove are used for guiding the movement of the tensioning trolley.

[0025] On the left and right sides of the tensioning trolley, a pair of wheel brackets 7 are respectively connected. The wheel brackets 7 are installed on the left and right sides of the tensioning trolley to support moving components such as U-shaped traveling wheels 8 and limit wheels 9, ensuring their stable movement on the guide rail. The wheel brackets 7 are located at the front and rear ends of the tensioning trolley. The moving components include U-shaped traveling wheels 8, limit wheels 9 and wheel brackets 7. The U-shaped traveling wheels 8 are placed on the guide rail of the tensioning trolley and cooperate with the guide rail through the rectangular grooves on the outer circumference of their circles, for sliding and moving along the guide rail. The limit wheels 9 are arranged on the wheel brackets 7 at different heights. The limit wheels 9 are installed on the upper side of the wheel brackets 7. The limit wheels 9 are in contact with the top end of the first chute with a gap left, for convenient installation and limiting the upward displacement of the tensioning trolley when jittering. The limit wheels 9 limit the displacement of the tensioning trolley from jumping due to uneven force, thus avoiding the phenomenon of the tensioning trolley derailing. The U-shaped traveling wheels 8 are placed on the guide rail of the tensioning trolley, and the rectangular grooves on the outer circumference of the U-shaped traveling wheels 8 cooperate with the guide rail of the tensioning trolley. On the left and right sides of the tensioning trolley, a number of roller bearing seats 3 are symmetrically arranged respectively. A redirecting roller 4 and a pressing roller 2 are respectively connected between the two roller bearing seats 3. A belt is placed on the redirecting roller 4 and the pressing roller 2. In the middle of the rear end of the tensioning trolley, a tension pulley 6 is connected. When the tensioning trolley moves forward by pulling the pulley 6, the wheel rims on both sides of the U-shaped traveling wheels 8 can be closely attached to the two side surfaces of the rectangular guide rail 12, preventing the tensioning trolley from running off track. When the tensioning trolley has a tendency to jump upward due to the vibration of the conveyor belt or uneven force, the limit wheels 9 will be in close contact with the upper surface of the inner side of the channel steel frame 10 to limit the upward displacement of the tensioning trolley. Under normal stress conditions, there is a certain gap between the limit wheels 9 and the upper surface of the inner side of the channel steel frame 10 to ensure that the tensioning trolley will not be blocked during movement.

[0026] Embodiment 2: Please refer to Figure 1 、 4 , and on the basis of Embodiment 1, it further includes the following structure:

[0027] Adjusting device 13, driven by a driving motor, including a gear 14, a rack 15, a spring 16, and a limit stop 17.

[0028] The gear 14 is installed in the middle of the bottom end of the tensioning trolley. The input shaft of the gear 14 is connected to the output shaft of the driving motor. A pair of racks 15 are respectively meshed on the outer side of the gear 14. The two racks 15 are parallel and oppositely arranged. The top end of the rack 15 abuts against the inner wall of the second sliding groove and is slidably fitted in the second sliding groove. Fixed blocks are respectively fixedly connected to the upper and lower ends of the rack 15. A reset rod is fixedly connected to the middle of the fixed block. A blocking block is fixedly connected to the top end of the reset rod. A limit stop block 17 is slidably fitted on the reset rod. Springs 16 are respectively arranged between the limit stop block 17 and the reset rod and the blocking block, sleeved on the outer circumference of the reset rod. One end of the spring 16 abuts against the fixed block, and the other end abuts against the limit stop block 17. One end of the other spring 16 abuts against the blocking block, and the other end abuts against the limit stop block 17. After the gear 14 is driven by the driving motor, the two meshed racks 15 on both sides are slid. The two racks 15 are oppositely arranged and slide in opposite directions, moving the guide frame into the second sliding groove and abutting against the inner wall of the second sliding groove. Subsequently, after the rack 15 reaches the set length, the limit stop block 17 fits with the gear 14, the driving motor stops working, and the input shaft of the gear 14 stops working. Subsequently, during slight jitter, when the jitter occurs and the gear 14 rotates forward, the limit stop block 17 further pushes the rack 15. When the gear 14 rotates slightly in reverse during the jitter, the limit stop block 17 slides on the reset rod. Due to the acting force of the springs 16 at both ends, the rack 15 will not be displaced, ensuring the guiding smoothness of the tensioning trolley during movement. In addition, the length of the rack 15 is the distance from the central axis of the middle of the tensioning trolley to the second sliding groove. During movement, the gear 14 rotates, the limit stop block 17 abuts against the blocking block, compresses the spring 16, moves the rack 15, and then engages in transmission.

[0029] The trolley guide rails are distributed along the entire length of the channel steel frame 10. The cross-section of the guide rails is rectangular.

[0030] The limit stop block 17 is arranged in a conical shape. The limit stop block 17 cooperates with the spring 16 and leaves a gap with the bottom end of the rack 15 for limiting in cooperation with the spring 16 after reaching the set position.

[0031] A guide frame is further included. The guide frame is installed at the top end of the rack 15. Guide wheels are respectively connected to the upper and lower ends of the guide frame. The guide wheels are slidably fitted in the second sliding groove to reduce the friction during sliding and guide the movement at the same time.

[0032] The above are only the embodiments of the present utility model, and common knowledge such as the specific structures and characteristics known in the solutions is not described in detail herein. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights involved.

Claims

1. A device for preventing a tensioning trolley from falling off the track and from running off the track, characterized in that: The invention comprises a channel steel frame (10), wherein two sliding grooves arranged at different heights are symmetrically provided on the left and right channel steel frames (10), wherein a tensioning trolley guide rail is connected to the bottom end of the first sliding groove, and a tensioning trolley is connected to the tensioning trolley guide rail, and an adjusting device (13) is connected to the second sliding groove, and the adjusting device (13) is installed at the bottom end of the tensioning trolley. A pair of wheel brackets (7) are connected to the left and right sides of the tensioning trolley respectively. The wheel brackets (7) are located at the front and rear ends of the tensioning trolley. The moving assembly comprises a grooved walking wheel (8), a limiting wheel (9) and a wheel bracket (7). The grooved walking wheel (8) and the limiting wheel (9) are arranged on the wheel bracket (7) at different heights. The grooved walking wheel (8) is mounted on the tensioning trolley guide rail. The rectangular groove on the outer circumference of the grooved walking wheel (8) matches the tensioning trolley guide rail. A plurality of roller bearing seats (3) are symmetrically arranged on the left and right sides of the tensioning trolley respectively. A redirecting roller (4) and a pressing roller (2) are connected between the two roller bearing seats (3). Belts are mounted on the redirecting roller (4) and the pressing roller (2). A tension pulley (6) is connected to the middle of the rear end of the tensioning trolley. The regulating device (13) is driven by a driving motor and comprises a gear (14), a rack (15), a spring (16), and a limit stopper (17). The gear (14) is mounted at the middle of the bottom end of the tensioning trolley. The input shaft of the gear (14) is connected to the output shaft of the driving motor. A pair of racks (15) are respectively meshed on the outer side of the gear (14). The two racks (15) are arranged in parallel and opposite to each other. The top of the rack (15) contacts the inner wall of the second sliding groove and is slidably matched in the second sliding groove. The upper and lower ends of the rack (15) are respectively fixedly connected to fixed blocks. A reset rod is fixedly connected to the middle of the fixed block. A blocking block is fixedly connected to the top of the reset rod. A limited stopper (17) is slidably matched on the reset rod. A spring (16) is respectively arranged between the limited stopper (17) and the reset rod and the blocking block. The spring (16) is sleeved on the outer circumference of the reset rod. One end of the spring (16) contacts the fixed block and the other end contacts the limited stopper (17). One end of another spring (16) contacts the blocking block and the other end contacts the limited stopper (17).

2. The anti-off-track and anti-deviation device for the tensioning trolley according to claim 1, characterized in that: The limiting wheel (9) is mounted on the upper side of the wheel bracket (7), and the limiting wheel (9) contacts the top of the first slide groove with a gap left, so as to facilitate installation and limit the displacement of the tensioning trolley jumping upward when it shakes.

3. The device for preventing the tensioning trolley from falling off the track and from running off the track according to claim 1, characterized in that: The trolley guide rail is distributed along the entire length of the channel steel frame (10), and the cross section of the guide rail is rectangular.

4. The anti-off-track and anti-deviation device for the tensioning trolley according to claim 1, characterized in that: The limit stopper (17) is arranged in a conical shape, cooperates with the spring (16), and leaves a gap with the bottom end of the rack (15) so as to cooperate with the spring (16) to limit the position after reaching a predetermined position.

5. The device for preventing the tensioning trolley from falling off the track and from running off the track according to claim 1, characterized in that: It also includes a guide frame, which is mounted on the top of the rack (15), and the upper and lower ends of the guide frame are respectively connected to guide wheels, and the guide wheels are slidably matched in the second sliding groove.

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