Chain tensioning device of pipe chain machine

Abstract

The utility model discloses a chain tensioning device of a tubular chain machine. Comprising a tensioning box, a pair of sliding seats arranged on the front side wall and the rear side wall in the tensioning box in a sliding mode in the left-right direction, a chain wheel assembly rotationally arranged on the pair of sliding seats, and a pair of material holes formed in the box wall of the right side of the tensioning box. The chain penetrates through the pair of material holes from the right side of the exterior of the tensioning box, enters the interior of the tensioning box and is in transmission connection with the chain wheel assembly, the tensioning support is connected between the positions, close to the left side, of the pair of sliding bases and used for tensioning the pair of sliding bases towards the left side, and the pull rod hole is formed in the box wall of the left side of the tensioning box. The pull rod penetrates through the pull rod hole from the left side of the exterior of the tensioning box, enters the interior of the tensioning box and is connected with the tensioning support, the outer circle of the pull rod is sleeved with the compression spring from the exterior of the tensioning box, the compression spring abuts against the outer wall of the left side of the tensioning box, and the compression nut is in threaded connection with a threaded outer circle at the left end of the outer circle of the pull rod and abuts against the compression spring. The chain tensioning force adjusting device facilitates adjustment operation and maintenance of the chain tensioning force.

Description

Technical Field

[0001] The utility model relates to the technical field of tube chain machines, in particular to a chain tensioning device of a tube chain machine. Background Art

[0002] The pipe chain machine is a device that uses a chain as a traction tool to transport powdery materials, granular materials or block materials in a pipeline. The chain of the pipe chain machine is built into the pipeline, and a number of scraper plates are arranged at intervals on the chain. A space for material transportation is formed between two adjacent scraper plates. The pipeline is provided with a feeding node and a discharging node. Through the traction of the chain, the material can be transported from the feeding node to the discharging node.

[0003] In order to achieve chain traction, it is usually necessary to set a chain traction device and a tensioning device on the tube chain machine, and a closed conveying channel is formed between the traction device, the tensioning device and the conveying pipeline. In the prior art, a typical chain tensioning device is usually set in a closed tensioning box, which has the following disadvantages: the adjustment of the chain tensioning force needs to be implemented after the machine is disassembled, and the adjustment operation and maintenance of the chain tensioning force are relatively troublesome; in addition, the existing chain tensioning device is also relatively troublesome to disassemble and repair. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a chain tensioning device for a tube chain machine, which is intended to facilitate the adjustment, operation and maintenance of the chain tensioning force. The specific technical solution is as follows:

[0005] The chain tensioning device of a tube chain machine comprises a tensioning box, a pair of slide seats respectively slidably arranged on the front and rear side walls inside the tensioning box along the left and right directions, a sprocket assembly rotatably arranged on the pair of slide seats, a pair of material holes opened on the right side box wall of the tensioning box, a chain passing through the pair of material holes from the right side of the outside of the tensioning box to enter the inside of the tensioning box and realize transmission connection with the sprocket assembly, a tensioning bracket connected between the left side parts of the pair of slide seats for tensioning the pair of slide seats toward the left direction, a pull rod hole opened on the left side box wall of the tensioning box, a pull rod passing through the pull rod hole from the left side of the outside of the tensioning box to enter the inside of the tensioning box and connected to the tensioning bracket, a compression spring sleeved on the outer circle of the pull rod from the left side of the outside of the tensioning box and supporting the left outer wall of the tensioning box, and a clamping nut threadedly connected to the threaded outer circle at the left end of the outer circle of the pull rod and supporting the compression spring.

[0006] In the utility model, the sprocket assembly comprises a rotating shaft and a sprocket arranged on the rotating shaft, and two ends of the rotating shaft are correspondingly rotatably arranged on the pair of slide seats.

[0007] Preferably, a pair of slide rails are correspondingly arranged on the front and rear side walls inside the tensioning box along the left-right direction, and the pair of sliding seats are correspondingly slidably arranged on the pair of slide rails.

[0008] Preferably, substrates are respectively arranged on the front and rear side walls inside the tensioning box along the left-right direction. A pair of guide plates are detachably connected to the substrates. A chute is formed between the pair of guide plates. One end of the sliding seat close to the substrate is slidably arranged on the chute and is slidably connected to the end face of the guide plate.

[0009] In the present utility model, a bearing mounting hole is formed at one end of the sliding seat far from the substrate. A rolling bearing is arranged in the bearing mounting hole. Both ends of the rotating shaft are correspondingly rotatably arranged on the pair of sliding seats through the rolling bearing.

[0010] Preferably, a sealing seat ring is arranged at one end of the sliding seat far from the substrate. A sealing packing is filled between the inner hole of the sealing seat ring and the outer circle of the rotating shaft. A sealing pressure seat for pressing the sealing packing is arranged at the orifice of the sealing seat ring at the end far from the sliding seat.

[0011] Preferably, a plurality of stud bolts are arranged on the sealing seat ring. Corresponding stud bolt holes for passing through the stud bolts are arranged on the sealing pressure seat. The end parts of the plurality of stud bolts are commonly connected with a support flange through nuts. A top pressure spring is sleeved on the stud bolt. The top pressure spring is pressed between the sealing pressure seat and the support flange.

[0012] Preferably, the tensioning bracket is a U-shaped tensioning bracket, and diagonal support ribs are respectively arranged at the corner positions on both sides of the bottom of the U-shaped opening of the U-shaped tensioning bracket.

[0013] As a further improvement of the present utility model, a pair of sprocket speed measurement handles are symmetrically fixed on the rotating shaft, and a proximity sensor for detecting whether the sprocket speed measurement handles are approaching is arranged on the sliding seat.

[0014] In the present utility model, a spring sheath is further arranged on the periphery of the compression spring. The spring sheath is fixed on the outer side wall of the tensioning box.

[0015] As a further improvement of the present utility model, a nitrogen gas filling port is further arranged on the box wall of the tensioning box, and a nitrogen gas filling block adapter is arranged on the nitrogen gas filling port.

[0016] In the present utility model, a sealing structure is arranged between the pull rod and the pull rod hole of the tensioning box.

[0017] In the present utility model, a pair of feeding pipes are correspondingly connected to the pair of material holes of the tensioning box. The chain passes through the pair of feeding pipes, and scraping discs are arranged at intervals on the chain.

[0018] The beneficial effects of the utility model are:

[0019] First, the utility model is a chain tensioning device of a tube chain machine, in which a tensioning bracket for pulling the sprocket assembly is arranged in the tensioning box, and a pull rod led out to the outside of the tensioning box is arranged on the tensioning bracket, and a compression spring is arranged on the pull rod; when it is necessary to adjust the tensioning force of the chain, it is only necessary to directly adjust the clamping nut on the pull rod from the outside of the tensioning box, and the tension of the pull rod is changed by adjusting the compression force of the compression spring, thereby greatly facilitating the adjustment of the tensioning force; in addition, since the sprocket assembly is slidably arranged on the slide rail, it is convenient to quickly separate the sprocket assembly and the chain during maintenance, and it is convenient to disassemble and maintain.

[0020] Secondly, in the chain tensioning device of a tube chain machine of the utility model, both ends of the rotating shaft of the sprocket assembly are arranged on the slide rail by means of sliding seats, and the synchronous pulling of the two ends is achieved by means of a tensioning bracket, so that the chain tensioning has good stability.

[0021] Thirdly, the utility model provides a chain tensioning device for a tube chain machine, and a nitrogen inflation block plug connector is provided on the tensioning box. Nitrogen can be filled into the tube chain machine through the nitrogen inflation block plug connector before material transportation to replace the air inside the tube chain machine; at the same time, it is beneficial to maintain a certain nitrogen pressure inside the tube chain machine during material transportation, and is beneficial to prevent the entry of outside air due to pipeline leakage, thereby facilitating the transportation of special materials that need nitrogen protection in the pipeline.

[0022] Fourthly, the utility model provides a chain tensioning device for a tube chain machine, and a sprocket speed measuring handle is arranged on the rotating shaft. The frequency of the rotation of the sprocket speed measuring handle through the proximity sensor on the slide seat can be measured, so that the rotation speed of the sprocket can be measured, which greatly facilitates the control of the sprocket rotation speed and realizes accurate and controllable feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the appearance structure of a chain tensioning device of a tube chain machine of the utility model;

[0024] Figure 2 Yes Figure 1 A schematic diagram of the structure after the tension box cover, spring sheath and chain are removed and the tension box is cut open;

[0025] Figure 3 yes Figure 2 A schematic diagram of the structure in which the sprocket assembly is connected to the tensioning bracket;

[0026] Figure 4 yes Figure 3 Structural schematic diagram showing that rolling bearings and sealing packings are correspondingly arranged inside the middle sliding seat and the sealing seat ring.

[0027] In the figure: 01 is the tension box, 02 is the sliding seat, 03 is the sprocket assembly, 04 is the material hole, 05 is the chain, 06 is the tensioning bracket, 07 is the pull rod hole, 08 is the pull rod, 09 is the compression spring, 10 is the compression nut, 11 is the rotating shaft, 12 is the sprocket, 13 is the slide rail, 14 is the base plate, 15 is the guide plate, 16 is the chute, 17 is the proximity sensor, 18 is the rolling bearing, 19 is the sealing seat ring, 20 is the sealing packing, 21 is the sealing pressure seat, 22 is the stud, 23 is the support flange, 24 is the top pressure spring, 25 is the diagonal support rib, 26 is the sprocket speed measurement handle, 27 is the spring sheath, 28 is the nitrogen filling block connector, 29 is the material conveying pipeline, 30 is the scraping plate, 31 is the tension box cover. Specific embodiments

[0028] The following combines the drawings and embodiments to further describe the specific embodiments of the present invention. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0029] As Figures 1 to 4 Shown is an embodiment of a chain tensioning device for a pipe chain conveyor of the present invention, including a tension box 01, a pair of sliding seats 02 respectively slidably arranged on the front and rear side walls inside the tension box 01 in the left-right direction, a sprocket assembly 03 rotatably arranged on the pair of sliding seats 02, a pair of material holes 04 opened on the right side wall of the tension box 01, a chain 05 passing through the pair of material holes 04 from the outside right side of the tension box 01 and entering the inside of the tension box 01 and achieving a transmission connection with the sprocket assembly 03, a tensioning bracket 06 connected between the left-side parts of the pair of sliding seats 02 for pulling the pair of sliding seats 02 towards the left side, a pull rod hole 07 opened on the left side wall of the tension box 01, a pull rod 08 passing through the pull rod hole 07 from the outside left side of the tension box 01 and entering the inside of the tension box 01 and connecting with the tensioning bracket 06, a compression spring 09 sleeved on the outer circumference of the pull rod 08 from the outside left side of the tension box 01 and abutting against the left outer wall of the tension box 01, and a compression nut 10 threadedly connected to the outer thread on the left end of the outer circumference of the pull rod 08 and abutting against the compression spring 09.

[0030] In this embodiment, the sprocket assembly 03 includes a rotating shaft 11 and a sprocket 12 arranged on the rotating shaft 11, and both ends of the rotating shaft 11 are correspondingly rotatably arranged on the pair of sliding seats 02.

[0031] Preferably, a pair of slide rails 13 are correspondingly arranged on the front and rear side walls inside the tension box 01 in the left-right direction, and the pair of sliding seats 02 are correspondingly slidably arranged on the pair of slide rails 13.

[0032] Preferably, on the front and rear inner side walls of the tension box 01, base plates 14 are respectively arranged in the left-right direction. A pair of guide plates 15 are detachably connected to the base plates 14. A chute 16 is formed between the pair of guide plates 15. One end of the slide block 02 close to the base plate 14 is slidably arranged on the chute 16 and is slidably connected to the end face of the guide plate 15.

[0033] In this embodiment, a bearing mounting hole is formed at one end of the slide block 02 away from the base plate 14. A rolling bearing 18 is arranged in the bearing mounting hole. Both ends of the rotating shaft 11 are rotatably arranged on the pair of slide blocks 02 through the rolling bearing 18 correspondingly.

[0034] Preferably, a sealing seat ring 19 is arranged at one end of the slide block 02 away from the base plate 14. A sealing packing 20 is filled between the inner hole of the sealing seat ring 19 and the outer circle of the rotating shaft 11. A sealing pressure seat 21 for pressing the sealing packing 20 is arranged at the orifice of the sealing seat ring 19 at the end away from the slide block 02.

[0035] Preferably, a plurality of stud bolts 22 are arranged on the sealing seat ring 19. Corresponding stud bolt holes for passing through the stud bolts 22 are arranged on the sealing pressure seat 21. The end parts of the plurality of stud bolts 22 are commonly connected with a flange 23 through nuts. A top pressure spring 24 is sleeved on the stud bolt 22. The top pressure spring 24 presses between the sealing pressure seat 19 and the support flange 23.

[0036] Preferably, the tensioning bracket 06 is a U-shaped tensioning bracket, and diagonal support ribs 25 are respectively arranged at the corner positions on both sides of the bottom of the U-shaped opening of the U-shaped tensioning bracket 06.

[0037] As a further improvement of this embodiment, a pair of sprocket speed measurement handles 26 are symmetrically fixed on the rotating shaft 11. A proximity sensor 17 for detecting whether the sprocket speed measurement handle 26 approaches is arranged on the slide block 02.

[0038] In this embodiment, a spring sheath 27 is further arranged on the periphery of the compression spring 09. The spring sheath 27 is fixed on the outer side wall of the tension box 01.

[0039] As a further improvement of this embodiment, a nitrogen gas filling port is further arranged on the box wall of the tension box 01. A nitrogen gas filling block adapter 28 is arranged on the nitrogen gas filling port.

[0040] In this embodiment, a sealing structure is arranged between the pull rod 08 and the pull rod hole 07 of the tension box 01.

[0041] In this embodiment, a pair of material conveying pipes 29 are correspondingly connected to a pair of material holes 04 of the tension box 01, the chain 05 passes through the pair of material conveying pipes 29, and scraping plates 30 are arranged at intervals on the chain 05.

[0042] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A chain tensioning device for a tube chain machine, characterized in that: The invention comprises a tensioning box, a pair of slide seats respectively arranged on the front and rear side walls of the tensioning box for sliding along the left and right directions, a sprocket assembly rotatably arranged on the pair of slide seats, a pair of material holes arranged on the right side wall of the tensioning box, a chain passing through the pair of material holes from the right side of the outside of the tensioning box and entering the inside of the tensioning box and realizing transmission connection with the sprocket assembly, a tensioning bracket connected between the left side parts of the pair of slide seats and used for tightening the pair of slide seats toward the left direction, a pull rod hole arranged on the left side wall of the tensioning box, a chain passing through the pull rod hole from the left side of the outside of the tensioning box and entering the inside of the tensioning box and connecting with the tensioning bracket A connected pull rod, a compression spring which is sleeved on the outer circle of the pull rod from the left side of the outside of the tension box and supports the left outer wall of the tension box, and a clamping nut which is threadedly connected to the threaded outer circle of the left end of the outer circle of the pull rod and supports the compression spring; base plates are respectively arranged on the front and rear side walls inside the tension box in the left and right directions, a pair of guide plates are detachably connected to the base plate, a slide groove is formed between the pair of guide plates, and the end of the slide seat close to the base plate is slidably arranged on the slide groove and is slidably connected to the end face of the guide plate; a nitrogen inflation port is also arranged on the box wall of the tension box, and a nitrogen inflation block plug connector is arranged on the nitrogen inflation port.

2. A chain tensioning device for a tube chain machine according to claim 1, characterized in that: The sprocket assembly comprises a rotating shaft and a sprocket arranged on the rotating shaft, and two ends of the rotating shaft are correspondingly rotatably arranged on the pair of slide seats.

3. A chain tensioning device for a tube chain machine according to claim 2, characterized in that: A pair of slide rails are correspondingly arranged on the front and rear side walls inside the tension box along the left and right directions, and the pair of slide seats are correspondingly slidably arranged on the pair of slide rails.

4. The chain tensioning device of a tube chain machine according to claim 2, characterized in that: A bearing mounting hole is provided at one end of the slide seat away from the base plate, a rolling bearing is arranged in the bearing mounting hole, and the two ends of the rotating shaft are rotatably arranged on the pair of slide seats via the rolling bearings.

5. The chain tensioning device of a tube chain machine according to claim 4, characterized in that: A sealing seat ring is arranged at one end of the slide away from the base plate, a sealing packing is filled between the inner hole of the sealing seat ring and the outer circle of the rotating shaft, and a sealing pressing seat for pressing the sealing packing is arranged at the opening of the sealing seat ring away from one end of the slide.

6. The chain tensioning device of a tube chain machine according to claim 1, characterized in that: The tensioning bracket is a U-shaped tensioning bracket, and oblique supporting ribs are respectively arranged at the corner positions on both sides of the bottom of the U-shaped opening of the U-shaped tensioning bracket.

7. The chain tensioning device of a tube chain machine according to claim 2, characterized in that: A pair of sprocket speed measuring handles are symmetrically fixed on the rotating shaft, and a proximity sensor for detecting whether the sprocket speed measuring handles are close is arranged on the sliding seat.

8. The chain tensioning device of a tube chain machine according to claim 1, characterized in that: A spring sheath is also arranged on the periphery of the compression spring, and the spring sheath is fixed on the outer side wall of the tension box.

9. The chain tensioning device of a tube chain machine according to claim 5, characterized in that: A plurality of studs are arranged on the sealing seat ring, and stud holes for passing the studs are correspondingly arranged on the sealing pressure seat. The ends of the plurality of studs are respectively connected to a supporting flange through nuts, and a pressure spring is sleeved on the studs, and the pressure spring presses between the sealing pressure seat and the supporting flange.

10. The chain tensioning device of a tube chain machine according to claim 1, characterized in that: A pair of material holes of the tension box are correspondingly connected to a pair of material delivery pipes, the chain passes through the pair of material delivery pipes, and scraping plates are arranged at intervals on the chain.

Images