Horizontal-pushing self-discharging conveying device and semitrailer

Abstract

The invention discloses a horizontal-pushing self-discharging conveying device and a semitrailer in the field of self-discharging conveying devices.The horizontal-pushing self-discharging conveying device and the semitrailer aim to solve the problem that in the prior art, a self-discharging conveying device is short in service life due to abrasion, and the horizontal-pushing self-discharging conveying device is arranged in a carriage and comprises a horizontal-pushing plate, a conveying belt, a rear roller, a transmission mechanism and a hydraulic transmission device; the horizontal pushing plate is connected with the conveying chain assembly and the conveying belt, the conveying chain assembly is connected with the hydraulic transmission device through the transmission mechanism and drives the conveying chain assembly so as to drive the horizontal pushing plate to move, the conveying belt and the conveying chain assembly do not make contact, and the conveying belt is well protected against friction damage; the conveying belt does not need to be wound, the bottom of the conveying belt can keep dry and clean, and the running resistance of the horizontal pushing plate is prevented from being gradually increased; the horizontal pushing plate translates through pulling force provided by the conveying chain assembly at the bottom, so that the conveying belt is basically free of pulling force, the service life of the belt can be prolonged, and the stability of the belt can be improved.

Description

Technical Field

[0001] The invention relates to the field of self-unloading conveying devices, and in particular to a flat-push self-unloading conveying device and a semi-trailer. Background Art

[0002] The flat-push dump trucks currently on the market use a rear-mounted power roller to wind the conveyor belt, driving the push plate to move horizontally to unload materials. The push plate returns to its original position mainly by dragging with a wire rope, which has the following shortcomings: the conveyor belt needs to provide a pulling force greater than the running resistance of the push plate. Long-term use will cause the conveyor belt to be stretched longer and longer, weakening its tensile strength and ultimately reducing its service life; asphalt, gravel particles, mud and sewage adhere to the conveyor belt and become thicker and thicker. If they are not cleaned in time, not only will the friction resistance coefficient at the bottom of the conveyor belt increase, but the wear of the bottom of the conveyor belt will also be accelerated; the wire rope will break due to metal fatigue after frequent repeated bending and stretching, and its service life will be short. Summary of the invention

[0003] The object of the present invention is to provide a flat push self-unloading conveying device and a semi-trailer, wherein a frame is arranged at the bottom of a carriage to support a conveying belt, thereby avoiding contact between the belt and a conveying chain assembly and avoiding wear and damage of the conveying belt.

[0004] In order to solve the above technical problems, the following technical solutions are adopted: In a first aspect, the present invention provides a flat-push self-unloading conveying device, which is arranged in a carriage and comprises: The push plate is used to push the material, and its bottom is connected to the conveyor chain assembly. A conveyor belt is arranged outside the conveyor chain assembly, supported by a frame provided at the bottom of the carriage, has no contact with the conveyor chain assembly, and one end of the conveyor belt is arranged on the flat push plate; The rear roller is used for steering the conveyor belt and the conveyor chain assembly. The transmission mechanism and the hydraulic transmission device are used to drive the conveying chain assembly, thereby driving the movement of the conveying belt and the push plate.

[0005] Optionally, a roller and a nylon block are provided at the bottom of the push plate, the roller is low in the middle and high on both sides, and the roller and the nylon block are both arranged on the slide rail at the bottom of the carriage to prevent the push plate from running off; A guide plate is provided at the bottom of the push plate to prevent the conveying chain assembly from interfering with the push plate.

[0006] Optionally, rotatable door panels are provided at both side ends of the push plate, rubber scrapers are installed on the door panels, and the edges of the door panels are connected to the side walls of the push plate through a plurality of parallel tension springs, and the tension springs are tensioned by screws.

[0007] Optionally, a heat-insulating interlayer is provided on the push plate, and a heat-insulating material is filled inside the heat-insulating interlayer. A plurality of temperature sensors are also installed on the push plate, and the temperature sensors transmit temperature data wirelessly.

[0008] Optionally, the conveying chain assembly includes two groups of conveying chains, the conveying chain includes a conveying straight chain end and a dragging straight chain segment, the dragging straight chain segment adopts a plate chain, one end of the conveying straight chain segment is connected to one end of the dragging straight chain segment through a connecting plate, the other end of the conveying straight chain segment is connected to a first tensioning device at the bottom of the push plate, and the other end of the dragging straight chain segment is connected to a second tensioning device at the top of the push plate.

[0009] Optionally, the first tensioning device and the second tensioning device both include a tensioning rod and a compression spring, one end of the tensioning rod is connected to the conveying chain, and the other end is connected to the compression spring, and the conveying chain is tensioned by the compression spring.

[0010] Optionally, the connecting plate is a wave-shaped bent plate, a plurality of mounting holes are provided on the connecting plate, one end of the conveyor belt is mounted on the connecting plate by bolts, and the other end is arranged on the flat push plate.

[0011] Optionally, the rear drum is provided with a plurality of rotatable drum columns, the drum columns are polygonal frames surrounded by a plurality of round steel pipes, the drum columns are used to install the conveyor belt to achieve its steering, the rear drum is provided with a groove wheel, the groove wheel is used to install the conveyor chain assembly to achieve its steering, and the middle part of the rear drum is also provided with a support bearing for positioning and installing the rear drum.

[0012] Optionally, the transmission mechanism is driven by the hydraulic transmission device, including a driving shaft and a driven shaft, the driving shaft is connected to the hydraulic transmission device, the driving shaft is connected to the driven shaft through a sprocket and a transmission chain, and the position of the driving shaft is adjusted by an adjusting bolt to adjust the tightness of the transmission chain.

[0013] In a second aspect, the present invention provides a semi-trailer, comprising a push dump conveying device as described in any one of the first aspects, wherein a mechanical limit switch and an electromagnetic limit switch for controlling the start and stop of the push dump conveying device are installed at the front end of the vehicle body close to the cab, and the electromagnetic limit switch takes precedence over the mechanical limit switch.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The conveyor belt and the conveyor chain assembly provided by the present invention do not contact each other, which well protects the conveyor belt from being damaged by friction. The conveyor belt does not need to be wound, and the bottom of the conveyor belt can be kept dry and clean, thereby avoiding the gradual increase of the running resistance of the push plate; the push plate is translated by the tension provided by the conveyor chain assembly at the bottom, so that the conveyor belt is basically not subject to tension, which can improve the service life and stability of the belt.

[0015] 2. The conveying chain of the present invention includes a conveying straight chain segment and a dragging straight chain segment. The dragging straight chain segment is driven by a sprocket, thereby pulling the conveying straight chain segment and the conveying belt to move, thereby pulling the push plate to move. The dragging straight chain segment adopts a plate chain, which can reduce the installation height. The use of the chain is that the flexibility and wear resistance of the chain are better than that of the wire rope, and the chain can maintain stable performance during long-term use, is not prone to breakage or excessive wear, and improves the service life of the device.

[0016] 3. The present invention also provides a heat-insulating interlayer and a temperature sensor on the push plate. The heat-insulating interlayer is used to insulate the material loaded thereon, and the internal temperature of the material is obtained by the temperature sensor. The internal temperature of the material is detected in real time, and a corresponding strategy can be made in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a side view of a flat push self-unloading conveying device in an embodiment of the present invention; Figure 2 is a schematic side cross-sectional view of a compartment of a semitrailer in an embodiment of the present invention; Figure 3 is a schematic diagram of a transmission mechanism in an embodiment of the present invention; Figure 4 1 is a three-dimensional schematic diagram of a push plate in an embodiment of the present invention; Figure 5 2 is a schematic diagram of the structure of the bottom roller of the push plate in an embodiment of the present invention; Figure 6 is a three-dimensional schematic diagram of the rear drum in an embodiment of the present invention; 1. Push self-unloading conveyor; 2. Push plate; 3. Conveying belt; 4. Conveying chain assembly; 5. Rear roller; 6. Transmission mechanism; 7. Hydraulic transmission device; 8. Driving shaft; 9. Driven shaft; 10. Sprocket; 11. Transmission chain; 12. Adjusting bolt; 13. Material; 14. Roller; 15. Nylon block; 16. First tensioning device; 17. Second tensioning device; 18. Slide rail; 19. Door panel; 20. Rubber scraper; 21. Tension spring; 22. Screw; 23. Tensioning rod; 24. Compression spring; 25. Conveying straight chain segment; 26. Drag straight chain segment; 27. Connecting plate; 28. Guide plate; 29. ​​Grooved wheel; 30. Roller column; 31. Support bearing; 32. Insulation interlayer; 33. Temperature sensor; 34. Mechanical limit switch; 35. Electromagnetic limit switch. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Example 1

[0019] like Figure 1 , Figure 2 As shown, this embodiment provides a flat push self-unloading conveying device 1, which is arranged in a carriage and includes: The push plate 2 is used to push the material 13, and the bottom is connected to the conveyor chain assembly 4. A conveyor belt 3 is arranged outside the conveyor chain assembly 4, supported by a frame provided in the carriage, has no contact with the conveyor chain assembly, and one end of the conveyor belt is arranged on the flat push plate 2; The rear roller 5 is used for steering the conveyor belt 3 and the conveyor chain assembly 4. The transmission mechanism 6 is used to drive the conveying chain assembly 4 , thereby driving the push plate 2 to push the material 13 .

[0020] like Figure 2 As shown, one end of the conveyor chain assembly goes from the lower part of the rear drum 5 to the upper part and then connects to the bottom of the flat push plate 2, and the other end goes from the lower part of the transmission mechanism 6 to the upper part and then connects to the bottom of the flat push plate 2. One end of the conveyor belt 3 is connected to the end of the flat push plate 2, and the other end goes around the rear drum 5 and connects to the middle of the lower part of the conveyor strip assembly. The conveyor belt 3 is supported by the frame at the bottom of the carriage, and the conveyor belt 3 does not contact the conveyor chain assembly 4, thereby avoiding the wear of the conveyor belt 3. The conveyor chain assembly 4 is driven by the transmission mechanism, thereby driving the conveyor belt 3 and the flat push plate 2 to move, thereby pushing the material 13. Example 2

[0021] This embodiment provides a horizontal push self-unloading conveying device 1 based on the embodiment 1, and the difference is that: like Figure 1 , Figure 4 As shown, the push plate 2 presents a right-angled triangle structure as a whole, and the inclined surface of the right-angled triangle structure is used to push the material 13 to move. A heat-insulating interlayer 32 is provided on the inner side of the inclined surface, and the heat-insulating interlayer 32 is filled with heat-insulating materials to store the material 13 in a heat-insulating manner. A plurality of temperature sensors 33 are also installed on the push plate 2, and the temperature sensors 33 transmit the temperature data inside the material 13 in a wireless manner, obtain the internal temperature of the material 13, and adjust the subsequent strategy in time.

[0022] like Figure 4 , Figure 5 As shown, four rollers 14 and four nylon blocks 15 are distributed at the bottom of the push plate 2. The four rollers 14 are evenly distributed at the bottom of the push plate 2. The nylon blocks 15 are arranged on the inner sides of the rollers 14. The rollers 14 are of a structure that is low in the middle and high on both sides. The rollers 14 and the nylon blocks 15 are both arranged on a slide rail 18 to prevent the push plate 2 from running off track. The slide rail 18 is arranged at the bottom of the car.

[0023] like Figure 1 As shown, a guide plate 28 is provided at the bottom of the push plate 2. The guide plate 28 is located at one end where the push plate 2 is connected to the conveying chain assembly 4, and is located between the conveying chain assembly 4 and the conveying belt 3. The guide plate 28 plays a role of smooth transition when the push plate 2 is pulled by the conveying chain assembly 4, thereby avoiding interference between the push plate 2 and the conveying chain assembly 4 and the conveying belt 3.

[0024] like Figure 2 , Figure 4 As shown, rotatable door panels 19 are provided on both sides of the push plate 2, and rubber scrapers 20 are installed on the door panels 19. The edges of the door panels 19 are connected to the outer side walls of the push plate 2 through a plurality of parallel tension springs 21. The tension springs 21 are tensioned by screws 22, so that the door panels 19 on both sides of the push plate 2 are opened outward, so that the rubber scrapers 20 on the door panels 19 are closely attached to the side walls of the carriage. In the process of the push plate 2 moving, the material 13 in the carriage is completely pushed forward.

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, the conveyor chain assembly 4 includes two groups of conveyor chains, which are respectively arranged on both sides of the bottom of the flat push plate 2. The conveyor chain includes a conveyor straight chain segment 25 and a drag straight chain segment 26. The drag straight chain segment 26 adopts a plate chain, which can reduce the installation height. One end of the conveyor straight chain segment 25 is installed on the first tensioning device 16 at the bottom of the flat push plate 2, and the other end bypasses the rear roller 5 to the lower part and is connected to one end of the drag straight chain segment 26 through the connecting plate 27. The other end of the drag straight chain segment 26 bypasses the transmission mechanism 6 to the upper part and is connected to the second tensioning device 17 at the bottom of the flat push plate 2. The conveyor belt 3 is located above the conveyor straight chain segment 25. Since the conveyor belt 3 is supported by the frame and does not contact the conveyor straight chain segment 25, there will be no friction and wear between the conveyor straight chain segment 25, thereby improving the service life of the conveyor belt.

[0026] The connecting plate 27 is a wave-shaped bending plate with a plurality of mounting holes. One end of the conveyor belt 3 is mounted on the connecting plate 27 by bolts. The transmission mechanism 6 drives the dragging straight chain segment 26 to pull the conveyor belt 3 and the conveyor straight chain segment 25 to move.

[0027] The first tensioning device 16 and the second tensioning device 17 both include a tensioning rod 23 and a compression spring 24 . The conveying straight chain segment 25 and the dragging straight chain segment 26 are connected to one end of the tensioning rod 23 . The other end of the tensioning rod 23 is provided with a compression spring 24 . The conveying straight chain segment 25 and the dragging straight chain segment 26 are tensioned by the compression spring 24 .

[0028] The transmission mechanism 6 includes a driving shaft 8 and a driven shaft 9. The hydraulic transmission device 7 is in transmission connection with the driving shaft 8. The driving shaft 8 is connected to the driven shaft 9 through two groups of separately arranged sprockets 10 and transmission chains 11. Each group of sprockets 10 is equipped with a group of conveying chains. The driving shaft 8 is driven by the hydraulic transmission device 7, thereby driving the driven shaft 9 through the sprockets 10 and the transmission chain 11. The sprockets 10 at both ends of the driven shaft 9 are synchronized to achieve synchronization of the two groups of conveying chains, ensuring the stability of the push plate 2 during movement. The driving shaft 8 is provided with an adjusting bolt 12, and the upper and lower positions of the driving shaft 8 are adjusted by adjusting the adjusting bolt 12, thereby adjusting the tightness of the transmission chain 11.

[0029] The rear roller 5 includes a central shaft, on which four rotatable roller columns 30 are provided. The roller columns 30 are variable frames surrounded by a plurality of round steel pipes. Grooves 29 are provided between the roller columns 30 at both ends. The diameter of the groove wheels 29 is smaller than the diameter of the roller columns 30. A support bearing 31 is provided between the two middle roller columns 30. The support bearing 31 is arranged at the rear end of the carriage for installing the rear roller 5. The conveying straight chain segment 25 is arranged on the groove wheels 29, and the conveying belt 3 is arranged on the roller column 30.

[0030] When in use, after the hydraulic transmission device 6 is started, it drives the driving shaft 8 to rotate, and drives the driven shaft 9 to rotate through the sprocket 10 and the transmission chain 11. The dragging straight chain segment 26 arranged on the sprocket 10 moves accordingly, driving the movement of the push plate 2 and the conveyor belt 3. The push plate 2 pushes the material 13 in front of it to move. Example 3

[0031] like Figure 2 As shown, this embodiment provides a semi-trailer, including a push-type self-unloading conveying device 1 provided in embodiment 1 or embodiment 2, wherein the push-type self-unloading conveying device 1 is installed in the compartment of the semi-trailer, and a mechanical limit switch 34 and an electromagnetic limit switch 35 are provided at one end of the compartment close to the cab, and the mechanical limit switch 34 and the electromagnetic limit switch 35 are both used to control the start and stop of the push-type self-unloading device. When the push plate 2 or the connection point with the conveying belt 3 on the conveying chain assembly 4 is close to the electromagnetic limit switch 35 or contacts the mechanical limit switch 34, the transmission mechanism 6 stops moving, realizing the front and rear limit position limitation of the push plate 2, preventing the push plate 2 from colliding with the front end of the compartment or moving outside the semi-trailer, wherein the electromagnetic limit switch takes precedence over the mechanical limit switch.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A flat push self-unloading conveying device, which is arranged in a carriage, characterized in that: include: The push plate is used to push the materials, and the bottom is connected to the conveyor chain assembly; A conveyor belt is arranged outside the conveyor chain assembly, supported by a frame provided at the bottom of the carriage, has no contact with the conveyor chain assembly, and one end of the conveyor belt is arranged on the flat push plate; A rear roller, used for steering the conveyor belt and the conveyor chain assembly; The transmission mechanism and the hydraulic transmission device are used to drive the conveying chain assembly, thereby driving the movement of the conveying belt and the push plate.

2. The horizontal push self-unloading conveying device according to claim 1, characterized in that: The bottom of the push plate is provided with rollers and nylon blocks, the rollers are low in the middle and high on both sides, and the rollers and nylon blocks are both arranged on the slide rails at the bottom of the carriage to prevent the push plate from running off; A guide plate is provided at the bottom of the push plate to prevent the conveying chain assembly and the conveying belt from interfering with the push plate.

3. The horizontal push self-unloading conveying device according to claim 1, characterized in that: Rotatable door panels are provided at both side ends of the push plate, and rubber scrapers are installed on the door panels. The edges of the door panels are connected to the side walls of the push plate through a plurality of parallel tension springs, and the tension springs are tensioned by screw rods.

4. The horizontal push self-unloading conveying device according to claim 1, characterized in that: The flat push plate is provided with a heat-insulating interlayer, the interior of which is filled with heat-insulating materials. A plurality of temperature sensors are also installed on the flat push plate, and the temperature sensors transmit temperature data wirelessly.

5. The horizontal push self-unloading conveying device according to claim 1, characterized in that: The conveying chain assembly includes two groups of conveying chains, and the conveying chain includes a conveying straight chain end and a dragging straight chain segment. The dragging straight chain segment adopts a plate chain. One end of the conveying straight chain segment is connected to one end of the dragging straight chain segment through a connecting plate, and the other end of the conveying straight chain segment is connected to a first tensioning device at the bottom of the push plate, and the other end of the dragging straight chain segment is connected to a second tensioning device at the top of the push plate.

6. The horizontal push self-unloading conveying device according to claim 5, characterized in that: The first tensioning device and the second tensioning device both include a tensioning rod and a compression spring. One end of the tensioning rod is connected to the conveying chain, and the other end is connected to the compression spring. The conveying chain is tensioned by the compression spring.

7. The horizontal push self-unloading conveying device according to claim 5, characterized in that: The connecting plate is a wave-shaped bending plate, and a plurality of mounting holes are arranged on the connecting plate. One end of the conveying belt is mounted on the connecting plate by bolts, and the other end is arranged on the flat push plate.

8. The horizontal push self-unloading conveying device according to claim 1, characterized in that: The rear drum is provided with a plurality of rotatable drum columns, which are polygonal frames surrounded by a plurality of round steel pipes. The drum columns are used to install the conveyor belt to realize its steering. The rear drum is provided with a groove wheel, which is used to install the conveyor chain assembly to realize its steering. The middle part of the rear drum is also provided with a support bearing for positioning and installing the rear drum.

9. The horizontal push self-unloading conveying device according to claim 1, characterized in that: The transmission mechanism is driven by the hydraulic transmission device, and includes a driving shaft and a driven shaft. The driving shaft is connected to the hydraulic transmission device, and the driving shaft is connected to the driven shaft through a sprocket and a transmission chain. The position of the driving shaft is adjusted by an adjusting bolt, thereby adjusting the tightness of the transmission chain.

10. A semi-trailer, characterized in that; It comprises the push dump conveying device as described in any one of claims 1 to 9, wherein a mechanical limit switch and an electromagnetic limit switch for controlling the start and stop of the push dump conveying device are installed at the front end of the carriage close to the cab, and the electromagnetic limit switch takes precedence over the mechanical limit switch.

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