A dustproof device for a vehicle cabin and a tarpaulin winding and unwinding method thereof

Abstract

The application provides a dustproof device for a carriage and a tarpaulin folding and unfolding method, and relates to the field of carriage dustproof. The dustproof device comprises a tarpaulin, two support plates, two groups of driven slider assemblies, a driving slider, a storage box and a jacking mechanism. The support plates are arranged on the upper parts of the two sides of the carriage. The driven slider assemblies comprise a plurality of driven sliders moving along the sliding grooves. The driving slider is connected with a driving assembly and can reciprocate in the sliding groove. The storage box is used for storing the driven sliders. The jacking mechanism can lift the driven sliders into the storage box. The lifted driven sliders are separated from the driving slider and the adjacent driven sliders. The dustproof device avoids tarpaulin folding and unfolding jamming and has a long service life.

Description

Technical Field

[0001] The present invention relates to the field of dust prevention in carriages, and in particular to a dust prevention device for carriages and a tarpaulin retracting and unfolding method thereof. Background Art

[0002] In the prior art, commercial oil and gas vehicles that transport powder and slag materials must cover the cargo box with a tarpaulin after it is filled, and the tarpaulin must be fixed around the sides of the cargo box to prevent it from scattering, losing, or polluting the environment. Powder transport trucks are usually long and have a large load capacity, and operators have to manually pull the cargo over and fix it around the sides, which is unsafe, time-consuming, and labor-intensive.

[0003] The prior art, a Chinese utility model patent with authorization publication number CN 216783367 U, provides an electric tarpaulin machine for a truck, comprising a bracket and a drive assembly for providing power for the movement of the tarpaulin, wherein the drive assembly is arranged on the bracket, and a transmission member is provided on the bracket, the transmission member is connected to the drive assembly, and the transmission member is used to be connected to the tarpaulin; the drive assembly comprises a first motor, which is a dual-axis motor, and the first motor is arranged on one side of the bracket, and both ends of the first motor are connected to a connecting rod through a universal joint, and the connecting rod is rotatably arranged on the bracket, and a driving wheel is provided on the connecting rod, and a rope is provided on the driving wheel, and a driven wheel is rotatably provided on the side of the bracket away from the driving wheel, and the rope is wound around the driven wheel.

[0004] With the above solution, on the one hand, the steel wire becomes tangled in the smaller cavity, causing local bulging of the wire, which creates resistance when in contact with the drive wheel, preventing the connecting rod from turning or causing high resistance, resulting in jamming during retraction and deployment. On the other hand, if the steel wire rope is not lubricated and maintained in a timely manner during use, small knots and other objects caused by long-term friction will affect the movement, resulting in difficulty in retracting and deploying the tarpaulin, affecting its use. Summary of the Invention

[0005] In order to solve the technical problem of jamming of carriage tarpaulin in the above-mentioned prior art, the present invention provides a dust-proof device for a carriage and a tarpaulin folding and unfolding method thereof, which avoids jamming of tarpaulin folding and unfolding and prolongs the service life.

[0006] In a first aspect, the present invention provides a vehicle compartment dustproof device for solving the above-mentioned technical problems, comprising a tarpaulin and further comprising:

[0007] Two support plates, the support plates are used to be arranged on the upper part of both sides of the vehicle compartment, the top of the support plates are provided with a slide groove, along the moving direction of the tarpaulin when the tarpaulin is folded, and the front ends of the tarpaulin are connected to the support plates on the corresponding sides along the moving direction of the tarpaulin when the tarpaulin is folded;

[0008] Two sets of driven slider assemblies, each of which includes a plurality of driven sliders that move along the slide groove, wherein the plurality of driven sliders are detachably connected to each other, and the last driven slider is connected to the end of the tarpaulin along the moving direction of the tarpaulin when the tarpaulin is folded;

[0009] An active slider, the active slider being connected to a driving assembly, the active slider being capable of reciprocating in the slideway, and the rear end of the active slider being detachably connected to the corresponding driven slider along the direction of movement when the tarpaulin is folded;

[0010] a storage box, the storage box being arranged at the front end of the support plate and opposite to the mounting slot, the active slider being able to move through the lower portion of the storage box, and the storage box being used to store the driven slider;

[0011] A lifting mechanism is provided in the mounting groove, and the lifting mechanism can lift the driven slider into the storage box, and the lifted driven slider is separated from the active slider and the adjacent driven slider.

[0012] The present invention cooperates with the jacking mechanism, the driven slider assembly and the active slider. When the tarpaulin is folded, the driven slider assembly can be pulled back and stored in the storage box. When the tarpaulin needs to be released, the driven slider assembly is pushed to move along the slide groove to drive the tarpaulin to unfold. Compared with the existing technology, there is no tangled wire rope and mutual friction between multiple driven slip rings. It is smooth to use without jamming and has a long service life.

[0013] Furthermore, along the moving direction when the tarpaulin is folded, a connecting part 1 is provided on the upper front end of the driven slider, and a connecting part 2 is provided on the lower rear end of the driven slider. A connecting pin is provided on the connecting part 1, and a connecting hole is provided on the lower surface of the connecting part 2, and the connecting pin can be extended into the connecting hole. A connecting plate is swingably provided on the upper rear end of the active slider, and a reset spring is provided between the connecting plate and the active slider. A groove is provided on the lower surface of the connecting plate, and the connecting pin can be extended into the groove.

[0014] Furthermore, the connecting portion is provided with a pin hole, the pin hole is provided with the connecting pin, a lifting spring is provided between the connecting pin and the bottom of the pin hole, and a guide surface is provided at the front of the connecting pin, and the upper part of the guide surface is inclined backward.

[0015] The present invention provides a lifting spring and a guide surface, so that the connecting pin can be easily inserted into the connecting hole and the groove, thereby ensuring reliable automatic connection between the active slider and the driven slider, as well as between two adjacent driven sliders.

[0016] Furthermore, the connecting pin is made of rubber material.

[0017] The present invention uses a connecting pin made of rubber material, so that the connecting pin can be bent and deformed under the push-pull action of the connecting plate and the connecting part 2 to make it easier to connect or disconnect, further ensuring reliable automatic connection.

[0018] Furthermore, the rear end of the active slider is provided with a magnetic block 1, and the front and rear ends of the driven slider are respectively provided with a magnetic block 2 and a magnetic block 3. The magnetic properties of the magnetic block 2 and the magnetic block 3 are opposite, and the magnetic properties of the magnetic block 1 and the magnetic block 2 are opposite.

[0019] Furthermore, entrances are respectively provided at both ends of the lower portion of the storage box, the width of the storage box is greater than the length of the driven slider, and when the driven slider is located in the slide groove at the bottom of the storage box, adjacent parts of the driven slider are located outside the storage box.

[0020] The present invention limits the width of the storage box, thereby ensuring that the driven slider reduces the lifting resistance on the one hand, and on the other hand, ensuring that the storage box plays a limiting role when the driven slider is separated to avoid being dragged along.

[0021] Furthermore, the drive assembly includes a drive motor, which drives a drive shaft. The drive shaft is rotatably arranged between the two support plates. A driving gear is respectively provided at both ends of the drive shaft. The driving gear is engaged with the driven gear. A connecting rod is provided on the driven gear. The end of the connecting rod is rotatably connected to a swing arm, and the swing arm is rotatably connected to the front end of the active slider on the corresponding side.

[0022] The present invention realizes the reciprocating movement of the active slider through a connecting rod mechanism, and has a simple and compact structure.

[0023] Furthermore, the lifting mechanism includes a gear shaft, which is rotatably arranged on the inner wall of the support plate, a transmission belt is arranged between one end of the gear shaft and the driven gear, and a cam is coaxially and rotatably arranged on the other end of the gear shaft, the cam is arranged in the mounting groove, and a transmission key is arranged between the cam and the gear shaft, the transmission key is connected to a driving member, and the driving member can drive the transmission key to move axially.

[0024] The present invention realizes intermittent operation of the lifting mechanism by arranging a driving member to drive the transmission key to move back and forth, thereby avoiding interference and jamming when the driven slider moves.

[0025] Furthermore, the driving member includes an electromagnet, which is arranged in the mounting cavity of the cam. The electromagnet and the transmission key are connected by a telescopic spring. When the driving member is energized, the transmission key retracts into the mounting cavity, and the gear shaft can rotate relative to the cam.

[0026] In a second aspect, the present invention further provides a method for retracting and deploying a tarpaulin of a vehicle compartment dustproof device, using the above-mentioned vehicle compartment dustproof device, comprising the following steps:

[0027] S01: When the tarpaulin is folded, the active slider moves forward by a set distance, driving the driven slider assembly to move forward;

[0028] S02: When the driven slider connected to the active slider completely enters the lower part of the storage box, the cam of the lifting mechanism starts to rotate from the initial position, gradually lifting the driven slider located above it upward, so that its two ends are separated from the active slider and the adjacent driven slider and enter the storage box;

[0029] S03: The active slider moves to the end point and then moves backward into the storage box, generating sliding friction with the driven slider that has just entered the storage box. The cam rotates to the initial position and stops rotating.

[0030] S04: The active slider moves backward a set distance and then automatically connects with the driven slider outside the storage box;

[0031] S05: The active slider moves forward, driving the driven slider assembly to move forward;

[0032] S06: Repeat steps S02 to S04 until the second-to-last slave slider in the slave slider group enters the storage box, the active slider is located at the front of the storage box and is still connected to the second-to-last slave slider, and the cam rotates to a position where it contacts the lower surface of the second slave slider and no longer rotates;

[0033] S07: When releasing the tarpaulin, the active slider moves backward, pushing the second-to-last driven slider to move outside the storage box, and the cam remains stationary;

[0034] S08: The active slider moves forward in the reverse direction by a set distance to the front of the storage box, and the third-to-last driven slider falls on the upper part of the cam under the action of gravity;

[0035] S09: The active slider moves backward, pushing the third-to-last driven slider to move to the outside of the storage box and connect with the second-to-last driven slider;

[0036] S10: Repeat steps S08 to S09 until all corresponding driven sliders are pushed out of the storage box, the active slider remains connected to the first driven slider, and the cam rotates to the initial position.

[0037] It can be seen from the above technical solutions that the present invention has the following advantages:

[0038] The present invention provides a dust-proof device for a vehicle compartment and a tarpaulin folding and unfolding method thereof. Through the cooperation of a lifting mechanism, a driven slider assembly and an active slider, when the tarpaulin is folded, the driven slider assembly can be pulled back and the driven slider can be disconnected and stored in a storage box. When the tarpaulin needs to be unfolded, the driven slider assembly can be pushed to move along the slide groove to drive the tarpaulin to unfold and realize the restoration of the connection of each driven slider. Compared with the existing technology, there is no disorder of the wire rope and the mutual friction between multiple driven slip rings. The use is smooth and has a long service life. By arranging a lifting spring and a guide surface, it is convenient for the connecting pin to extend into the connecting hole and the groove to ensure that the active slider is connected to the driven slider and Reliable automatic connection between two adjacent driven sliders; by using connecting pins made of rubber material, the connecting pins can be bent and deformed under the push-pull action of the connecting plate and the connecting part 2, making it easier to connect or detach, further ensuring reliable automatic connection; by limiting the width of the storage box, on the one hand, the driven slider is guaranteed to reduce the lifting resistance, and on the other hand, the storage box plays a limiting role when the driven slider is separated to avoid linkage; the reciprocating movement of the active slider is achieved through a connecting rod mechanism, and the structure is simple and compact; by setting a driving member to drive the transmission key to move back and forth, the jacking mechanism is realized to work intermittently, avoiding interference when the driven slider moves and causing jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 1 .

[0041] Figure 2 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 2 (The cam is in the initial position).

[0042] Figure 3 for Figure 2 Center A is an enlarged view.

[0043] Figure 4 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 3 (Status diagram of the driven slider when the tarpaulin is recovered and lifted up).

[0044] Figure 5 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 4 (Status diagram of tarpaulin being released or retracted).

[0045] Figure 6This is a schematic diagram of the assembly structure of the drive assembly, active slider, lifting mechanism and driven slider assembly in the first specific embodiment of the present invention.

[0046] Figure 7 Schematic diagram of the structure of the active slider in the first specific embodiment of the present invention.

[0047] Figure 8 Schematic diagram of the structure of the driven slider in the first specific embodiment of the present invention.

[0048] In the figure, 1. tarpaulin; 2. support plate; 201. slide; 3. active slider; 301. connecting plate; 302. groove; 4. driving assembly; 401. connecting rod; 402. swing arm; 403. driven gear; 404. driving shaft; 405. driving motor; 5. storage box; 6. driven slider; 601. connecting pin; 602. lifting spring; 603. connecting hole; 7. lifting mechanism; 701. cam; 702. transmission key; 703. gear shaft. DETAILED DESCRIPTION

[0049] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent. Specific implementation method 1

[0051] like Figures 1 to 5As shown, this specific embodiment provides a dust-proof device for a carriage, comprising a tarpaulin 1, two support plates 2, two groups of driven slider assemblies, two active sliders 3, a driving assembly 4 and a lifting mechanism 7; the support plates 2 are used to be arranged on the upper part of both sides of the carriage, and a slide groove 201 is provided on the top of the support plates 2, and a slide rail is provided on the slide groove 201. Along the moving direction of the tarpaulin 1 when the tarpaulin 1 is folded, a mounting groove is provided in the front interlayer of the support plate 2. Along the moving direction of the tarpaulin when the tarpaulin is folded, the front two ends of the tarpaulin 1 are connected to the support plates 2 on the corresponding sides, and an inverted U-shaped support frame is provided inside the tarpaulin 1. The two ends of the support frame can move respectively along the guide groove on the inner side of the support plate 2, and the guide groove is arranged parallel to the upper part of the slide groove 201; the driven slider assembly includes a plurality of driven sliders 6, and the driven slider assembly moves along the slide rail of the slide groove 201. The driven sliders 6 are detachably connected to each other, and along the moving direction of the tarpaulin 1 when the tarpaulin 1 is folded, the last driven slider 6 is connected to the tarpaulin 1 by a wire rope or chain, and a dust-proof brush is provided on the slide 201 to prevent dust and other debris from entering; the active slider 3 is connected to the driving component 4, and the active slider 3 can move back and forth in the slide 201, and along the moving direction of the tarpaulin 1 when the tarpaulin 1 is folded, the rear end of the active slider 3 is detachably connected to the corresponding driven slider 6; the storage box 5 is arranged at the front end of the support plate 2 and is opposite to the mounting groove, and the active slider 3 can move through the lower part of the storage box 5, and the storage box 5 is used to store the driven slider 6; the lifting mechanism 7 is arranged in the mounting groove, and the lifting mechanism 7 can lift the driven slider 6 into the storage box 5, and the lifted driven slider 6 is separated from the active slider 3 and the adjacent driven slider 6.

[0052] In this specific embodiment, the jacking mechanism 7, the driven slider assembly and the active slider 3 cooperate to push and pull the driven slider assembly through the active slider 3 to realize the deployment and recovery of the tarpaulin 1, and each driven slider 6 enters the storage box 5 for storage under the action of the jacking mechanism 7. Compared with the use of wire rope for retraction and deployment in the prior art, there is no problem of wire rope disorder and jamming caused by friction between multiple driven slip rings. It is smooth to use and has a long service life.

[0053] like Figures 6 to 8As shown, in order to realize the automatic connection between the driven sliders 6 and between the driven slider 6 and the active slider 3, in this specific embodiment, along the moving direction of the tarpaulin 1 when the folded tarpaulin is folded, the upper front end of the driven slider 6 is provided with a connecting portion 1, the lower rear end of the driven slider 6 is provided with a connecting portion 2, the connecting portion 1 is provided with a connecting pin 601, the lower surface of the connecting portion 2 is provided with a connecting hole 603, the connecting pin 601 can be extended into the connecting hole 603, the upper rear end of the active slider 3 is provided with a connecting plate 301 which can be swung, specifically, the rear end of the active slider 3 is provided with a groove, and the connecting portion 601 is provided with a connecting plate 301. One end of the plate 301 is rotatably connected to the groove through a pin shaft, and the other end of the connecting plate 301 extends out of the groove. A return spring is provided between the connecting plate 301 and the active slider 3, and a groove 302 is provided on the lower surface of the connecting plate 301. The connecting pin 601 can extend into the groove 302; preferably, in order to ensure reliable automatic connection, a pin hole is provided at the connecting portion, and a connecting pin 601 is provided in the pin hole. A lifting spring 602 is provided between the connecting pin 601 and the bottom of the pin hole, and a guide surface is provided at the front of the connecting pin 601. The upper part of the guide surface is inclined backward, and the connecting pin 601 The active slider 3 is made of rubber material; when the active slider 3 moves toward the driven slider 6 to connect with the driven slider 6, the connecting plate 301 is lifted up by the connecting pin 601, and the connecting pin 601 is pressed down by the lifting spring 602. As the two move closer, the connecting pin 601 is stuck on the top of the connecting pin 601 under the action of the return spring and the lifting spring 602, thereby realizing the connection between the active slider 3 and the driven slider 6; when the driven slider 6 is pushed and moved by the active slider 3, the connecting part 2 continues to move closer to the adjacent connecting part 1, and the connecting pin 601 is pressed down by the connecting part 2. As the two move closer, the connecting pin 601 is stuck on the top of the connecting pin 601 under the action of the return spring and the lifting spring 602, thereby realizing the connection between the active slider 3 and the driven slider 6. Continuously approaching, when the connecting hole 603 moves to the upper part of the connecting pin 601, it bounces into the connecting hole 603 under the action of the lifting spring 602, realizing the connection between the driven sliders 6; when the active slider 3 is separated from the driven slider 6, the driven slider 6 is vertically lifted up and drives the connecting plate 301 to rotate. When the driven slider 6 is raised to a certain height, the connecting plate 301 has a large force on the connecting pin 601. As the connecting pin 601 continues to rise, the force increases, elastic deformation occurs, and it pops out from the groove 302 of the connecting plate 301 to realize separation.

[0054] like Figures 1 to 5 As shown, in order to enable the driven slider 6 in the storage box 5 to avoid friction with the storage box 5 when lifting, in this specific embodiment, entrances are respectively provided at both ends of the lower part of the storage box 5, and the storage box 5 is straddled on the support plate 2. The width of the storage box 5 is greater than the length of the driven slider 6 to avoid friction with the end of the driven slider 6; preferably, the width of the storage box 5 is greater than the length of the driven slider 6 by 5mm~10mm, which can ensure that when the driven slider 6 is located in the slide groove 201 at the bottom of the storage box 5, the adjacent driven slider 6 is partially located outside the storage box 5, ensuring that when the driven slider 6 is separated, the storage box 5 plays a limiting role to avoid being dragged along and causing falling off.

[0055] like Figure 6 As shown, in order to realize the reciprocating movement of the active slider 3, in this specific embodiment, the driving assembly 4 includes a driving motor 405, which drives a driving shaft 404. The driving shaft 404 is rotatably arranged between the two support plates 2 through a bearing, and a driving gear is respectively provided at both ends of the driving shaft 404. The driving gear is meshed with the driven gear 403, and the driven gear 403 is rotatably arranged on the corresponding support plate 2 through a bearing. A connecting rod 401 is provided on the end surface of the driven gear 403, and the end of the connecting rod 401 is rotatably connected to the swing arm 402. The swing arm 402 is rotatably connected to the front end of the active slider 3 on the corresponding side. Specifically, a groove is provided at the front end of the active slider 3, and a pin is rotatably provided in the groove. The end of the swing arm 402 is connected to the pin, and the circular motion is converted into a linear reciprocating motion through the crank-connecting rod 401 mechanism, and the structure is compact. In this specific embodiment, the driving motor 405 adopts a servo motor, which can accurately control the reciprocating distance of the active slider 3 to avoid interference during jacking.

[0056] like Figures 2 to 5As shown, in order to avoid interference between the lifting mechanism 7 and the movement of the driven slider 6, the lifting mechanism 7 needs to be rotated after the driven slider 6 is in place. To this end, in this specific embodiment, the lifting mechanism 7 can adopt the following specific structure: the lifting mechanism 7 includes a gear shaft 703, the gear shaft 703 is rotatably arranged on the inner wall of the support plate 2 through a bearing, a transmission belt is arranged between one end of the gear shaft 703 and the driven gear 403, and a power component is shared with the active slider 3, and a cam 701 is coaxially and rotatably provided on the other end of the gear shaft 703, and the cam 701 is arranged in the mounting groove. The cam 701 and A transmission key 702 is provided between the gear shafts 703, and the transmission key 702 is connected to a driving member, which can drive the transmission key 702 to move axially; further, the driving member includes an electromagnet, and the driving member is provided in the installation cavity of the cam 701. The electromagnet and the transmission key 702 are connected by a telescopic spring. When the driving member is energized, the transmission key 702 retracts into the installation cavity, and the gear shaft 703 can rotate relative to the cam 701; after the tarpaulin 1 is released, the cam 701 rotates to the initial position. At this time, the highest point of the cam 701 is flush with the bottom surface of the slide groove 201, and the eccentric part is located on one side, which can support the storage box 5, and does not interfere with the movement of the active slider 3. When the tarpaulin 1 needs to be recovered, after the driven slider 6 has completely entered the storage box 5 (that is, at this moment the active slider 3 moves the set distance and there is a vacant time when the drive motor 405 reverses, and the active slider 3 has not moved in the reverse direction), the electromagnet is powered off, the telescopic spring releases the potential energy, the transmission key 702 enters the groove of the gear shaft 703 and the cam 701, connecting the two, the gear shaft 703 drives the cam 701 to rotate from the initial position, and gradually lifts the driven slider 6; when the active slider 3 starts to move backward, the cam 701 continues to rotate, and gradually Gradually separates from the lifted driven slider 6, and the driven slider 6 falls on the active slider 3 entering the storage box 5 to generate sliding friction. When the cam 701 rotates to the initial position, the electromagnet is energized, and the transmission key 702 retracts into the cam 701 and no longer rotates with the gear shaft 703. The working frequency and speed of the electromagnet (that is, the transmission ratio of the belt drive) are adjusted through experiments to match the movement of the active slider 3; when the tarpaulin 1 needs to be unfolded, the driven sliders 6 need to be pushed out one by one. In order to prevent the driven slider 6 from being unable to connect with the active slider 3, during this process, the cam 701 needs to be rotated to the initial position for support. Specific implementation method 2

[0058] This specific embodiment provides a dust-proof device for a carriage, which has a structure basically the same as that of the specific embodiment 1, except that: a magnet 1 is provided at the rear end of the active slider 3, and a magnet 2 and a magnet 3 are provided at the front and rear ends of the driven slider 6 respectively, the magnetism of magnet 2 and magnet 3 being opposite, and the magnetism of magnet 1 and magnet 2 being opposite; the suction force of magnet 1 and magnet 2, and the suction force of magnet 2 and magnet 3, on the one hand, can overcome the friction force of the slide groove 201, and the slider assembly can slide under the pull of the active slider 3, and on the other hand, can be adsorbed and disconnected under the action of the lifting mechanism 7.

[0059] Preferably, in order to better play the role of limiting the storage box 5 to prevent the chain reaction, the entrance of the storage box 5 is only within 1 mm higher than the height of the driven slider 6, effectively preventing the adjacent driven slider 6 from being pulled up.

[0060] When the tarpaulin 1 is folded, the active slider 3 attracts the driven slider assembly and moves toward the front end. When the active slider 3 moves the set distance, the driven slider 6 enters under the storage box 5, and the lifting mechanism 7 rises, disconnecting the magnetic adsorption. The active slider 3 approaches the driven slider 6 outside the storage box 5 and is connected through magnetic adsorption.

[0061] In this specific embodiment, the first magnetic block, the second magnetic block and the third magnetic block are installed in an embedded manner. Specific implementation method three

[0063] This embodiment provides a method for retracting and unfolding a tarpaulin 1 of a vehicle compartment dustproof device, using the vehicle compartment dustproof device of the first embodiment or the second embodiment, including the following steps:

[0064] S01: When the tarpaulin 1 is folded, the active slider 3 moves forward by a set distance, driving the driven slider assembly to move forward;

[0065] S02: When the driven slider 6 connected to the active slider 3 completely enters the lower part of the storage box 5, the cam 701 of the lifting mechanism 7 starts to rotate from the initial position, gradually lifting the driven slider 6 located above it upward, so that its two ends are separated from the active slider 3 and the adjacent driven slider 6 and enter the storage box 5;

[0066] S03: The active slider 3 moves to the end point and then moves backward into the storage box 5, generating sliding friction with the driven slider 6 that has just entered the storage box 5. The cam 701 rotates to the initial position and stops rotating.

[0067] S04: The active slider 3 moves backward a set distance and then automatically connects with the driven slider 6 outside the storage box 5;

[0068] S05: The active slider 3 moves forward, driving the driven slider assembly to move forward;

[0069] S06: Repeat steps S02 to S04 until the second-to-last driven slider 6 in the group of driven sliders 6 enters the storage box 5, the active slider 3 is located in the front of the storage box 5 and is still connected to the second-to-last driven slider 6, and the cam 701 rotates to a position where it contacts the lower surface of the second driven slider 6 and no longer rotates;

[0070] S07: When the tarpaulin 1 is released, the active slider 3 moves backward, pushing the second-to-last driven slider 6 to move to the outside of the storage box 5, and the cam 701 remains stationary;

[0071] S08: The active slider 3 moves forward in the reverse direction by a set distance to the front of the storage box 5, and the third-to-last driven slider 6 falls on the upper part of the cam 701 under the action of gravity;

[0072] S09: The active slider 3 moves backward, pushing the third-to-last driven slider 6 to move to the outside of the storage box 5 and connect with the second-to-last driven slider;

[0073] S10: Repeat steps S08 to S09 until all corresponding driven sliders 6 are pushed out of the storage box 5, the active slider 3 remains connected to the first driven slider 6, and the cam 701 rotates to the initial position.

[0074] In the initial position, the highest point of the outer circumference of the cam 701 is flush with the bottom surface of the slide groove 201. The cam 701 is in an inclined state, which can support the driven slider 6 in the storage box 5 without interfering with the movement of the active slider 3.

[0075] From the above specific embodiments, it can be seen that the present invention has the following beneficial effects:

[0076] 1. Through the cooperation of the lifting mechanism 7, the driven slider assembly and the active slider 3, when the tarpaulin 1 is folded up, the driven slider assembly can be pulled back and the driven slider 6 can be disconnected and stored in the storage box 5. When the tarpaulin 1 needs to be released, the driven slider assembly is pushed along the slide groove 201 to drive the tarpaulin 1 to unfold and realize the reconnection of each driven slider 6. Compared with the existing technology, there is no problem of wire rope disorder and mutual friction between multiple driven slip rings, which is smooth and has a long service life;

[0077] 2. By providing the lifting spring 602 and the guide surface, the connecting pin 601 is facilitated to extend into the connecting hole 603 and the groove 302, thereby ensuring reliable automatic connection between the active slider 3 and the driven slider 6, as well as between two adjacent driven sliders 6;

[0078] 3. By using a connecting pin 601 made of rubber, the connecting pin 601 can be bent and deformed under the push-pull action of the connecting plate 301 and the connecting part 2, making it easier to connect or disconnect, further ensuring reliable automatic connection;

[0079] 4. By limiting the width of the storage box 5, on the one hand, the driven slider 6 is ensured to reduce the lifting resistance, and on the other hand, the storage box 5 is ensured to play a limiting role when the driven slider 6 is separated to avoid being dragged along;

[0080] 5. The reciprocating movement of the active slider 3 is achieved through the connecting rod 401 mechanism, and the structure is simple and compact;

[0081] 6. By providing a driving member to drive the transmission key 702 to move back and forth, the lifting mechanism 7 can be operated intermittently, thereby avoiding interference and jamming when the driven slider 6 moves.

[0082] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dustproof device for a carriage, comprising a tarpaulin (1), characterized in that: Also includes: Two support plates (2), the support plates (2) being arranged on the upper part of both sides of the vehicle compartment, the top of the support plates (2) being provided with a slide groove (201), along the moving direction of the tarpaulin (1) when the tarpaulin (1) is folded, the front end interlayer of the support plates (2) being provided with a mounting groove, along the moving direction of the tarpaulin (1) when the tarpaulin (1) is folded, the front ends of the tarpaulin (1) being connected to the support plates (2) on the corresponding side; Two sets of driven slider assemblies, each of which comprises a plurality of driven sliders (6) that move along the slide groove (201), wherein the plurality of driven sliders (6) are detachably connected to each other, and along the moving direction of the tarpaulin (1) when the tarpaulin (1) is folded, the last driven slider (6) is connected to the end of the tarpaulin (1); An active slider (3), the active slider (3) being connected to a driving assembly (4), the active slider (3) being capable of reciprocating in the slide groove (201), and along the moving direction of the tarpaulin (1) when the tarpaulin (1) is folded up, the rear end of the active slider (3) being detachably connected to the corresponding driven slider (6); A storage box (5), the storage box (5) is arranged at the front end of the support plate (2) and is opposite to the mounting groove, the active slider (3) is capable of moving through the lower part of the storage box (5), and the storage box (5) is used to store the driven slider (6); A lifting mechanism (7) is provided in the installation groove, and the lifting mechanism (7) can lift the driven slider (6) into the storage box (5), and the lifted driven slider (6) is separated from the active slider (3) and the adjacent driven slider (6).

2. The vehicle compartment dustproof device according to claim 1, wherein: Along the moving direction when the tarpaulin (1) is folded, a connecting portion 1 is provided at the upper front end of the driven slider (6), and a connecting portion 2 is provided at the lower rear end of the driven slider (6). A connecting pin (601) is provided on the connecting portion 1, and a connecting hole (603) is provided on the lower surface of the connecting portion 2. The connecting pin (601) can be inserted into the connecting hole (603). A connecting plate (301) is swingably provided at the upper rear end of the active slider (3). A return spring is provided between the connecting plate (301) and the active slider (3). A groove (302) is provided on the lower surface of the connecting plate (301), and the connecting pin (601) can be inserted into the groove (302).

3. The vehicle compartment dustproof device according to claim 2, wherein: The connecting portion is provided with a pin hole, the pin hole is provided with the connecting pin (601), a lifting spring (602) is provided between the connecting pin (601) and the bottom of the pin hole, and a guide surface is provided at the front of the connecting pin (601), and the upper part of the guide surface is inclined backward.

4. The vehicle compartment dustproof device according to claim 3, wherein: The connecting pin (601) is made of rubber material.

5. The vehicle compartment dust prevention device according to claim 1, wherein: The rear end of the active slider (3) is provided with a magnetic block 1, and the front and rear ends of the driven slider (6) are respectively provided with a magnetic block 2 and a magnetic block 3, wherein the magnetic properties of the magnetic block 2 and the magnetic block 3 are opposite, and the magnetic properties of the magnetic block 1 and the magnetic block 2 are opposite.

6. The vehicle compartment dustproof device according to any one of claims 1 to 5, characterized in that: Entrances are respectively provided at both ends of the lower portion of the storage box (5); the width of the storage box (5) is greater than the length of the driven slider (6); and when the driven slider (6) is located in the slide groove (201) at the bottom of the storage box (5), adjacent parts of the driven slider (6) are located outside the storage box (5).

7. The vehicle compartment dustproof device according to claim 6, wherein: The driving assembly (4) includes a driving motor (405), wherein the driving motor (405) drives a driving shaft (404), wherein the driving shaft (404) is rotatably arranged between the two support plates (2), and a driving gear is respectively provided at both ends of the driving shaft (404), wherein the driving gear is meshed with a driven gear (403), and a connecting rod (401) is provided on the driven gear (403), wherein the end of the connecting rod (401) is rotatably connected to a swing arm (402), and the swing arm (402) is rotatably connected to the front end of the active slider (3) on the corresponding side.

8. The vehicle compartment dustproof device according to claim 7, wherein: The lifting mechanism (7) includes a gear shaft (703), the gear shaft (703) is rotatably arranged on the inner wall of the support plate (2), a transmission belt is arranged between one end of the gear shaft (703) and the driven gear (403), and a cam (701) is coaxially and rotatably arranged at the other end of the gear shaft (703), the cam (701) is arranged in the mounting groove, a transmission key (702) is arranged between the cam (701) and the gear shaft (703), and the transmission key (702) is connected to a driving member, and the driving member can drive the transmission key (702) to move axially.

9. The vehicle compartment dustproof device according to claim 8, wherein: The driving member includes an electromagnet, which is arranged in the installation cavity of the cam (701). The electromagnet and the transmission key (702) are connected via a telescopic spring. When the driving member is energized, the transmission key (702) retracts into the installation cavity, and the gear shaft (703) can rotate relative to the cam (701).

10. A method for retracting and unfolding a tarpaulin for a vehicle compartment dustproof device, characterized in that: The vehicle compartment dust prevention device according to claim 9 comprises the following steps: S01: When the tarpaulin is folded, the active slider moves forward by a set distance, driving the driven slider assembly to move forward; S02: When the driven slider connected to the active slider completely enters the lower part of the storage box, the cam of the lifting mechanism starts to rotate from the initial position, gradually lifting the driven slider located above it upward, so that its two ends are separated from the active slider and the adjacent driven slider and enter the storage box; S03: The active slider moves to the end point and then moves backward into the storage box, generating sliding friction with the driven slider that has just entered the storage box. The cam rotates to the initial position and stops rotating. S04: The active slider moves backward a set distance and then automatically connects with the driven slider outside the storage box; S05: The active slider moves forward, driving the driven slider assembly to move forward; S06: Repeat steps S02 to S04 until the second-to-last slave slider in the slave slider group enters the storage box, the active slider is located at the front of the storage box and is still connected to the second-to-last slave slider, and the cam rotates to a position where it contacts the lower surface of the second slave slider and no longer rotates; S07: When releasing the tarpaulin, the active slider moves backward, pushing the second-to-last driven slider to move outside the storage box, and the cam remains stationary; S08: The active slider moves forward in the reverse direction by a set distance to the front of the storage box, and the third-to-last driven slider falls on the upper part of the cam under the action of gravity; S09: The active slider moves backward, pushing the third-to-last driven slider to move to the outside of the storage box and connect with the second-to-last driven slider; S10: Repeat steps S08 to S09 until all corresponding driven sliders are pushed out of the storage box, the active slider remains connected to the first driven slider, and the cam rotates to the initial position.

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