Air swelling shaft sleeve device

Abstract

The utility model relates to the technical field of papermaking, in particular to an air swelling shaft sleeve device, which comprises a moving trolley, a lifting device, an air swelling shaft sleeve device and an air swelling shaft sleeve device, and is characterized in that the moving trolley comprises a chassis and a bearing bracket arranged above the chassis, and the bearing bracket consists of a cross rod and a reinforcing rod; the two supporting devices are symmetrically arranged above the reinforcing rod, and each supporting device comprises a first supporting part and a second supporting part which are arranged on the reinforcing rod, and an abutting part connected with the first supporting part and the second supporting part; the vertical height between the highest point of the first supporting part and the reinforcing rod is larger than the vertical height between the highest point of the second supporting part and the reinforcing rod. And the fixing device comprises a clamping piece for fixing the end part of the air swelling shaft and a driving part for driving the clamping piece to move up and down, through the arrangement, the service life is prolonged, the maintenance cost is reduced, the problems that time and labor are wasted and personal injury is easily caused during manual carrying and lifting are solved, and the working efficiency and the working safety are effectively improved.

Description

Technical Field

[0001] The utility model relates to an air expansion shaft sleeve device, belonging to the technical field of papermaking. Background Art

[0002] The air-expansion shaft is a special auxiliary winding and unwinding device with specific protrusions and an air nozzle that can be inflated and deflated. When in use, the air nozzle is used to inflate the paper. These specific protrusions will be higher than the surface of the shaft under the action of air pressure, fixing and locking the paper tube on it; when deflated, these protrusions will quickly retract, and the paper tube can be peeled off from the air-expansion shaft, playing an important role in the paper winding process.

[0003] In the paper rolling process, the pneumatic shaft is used as an auxiliary tool. There are corresponding models according to the width of the paper. When the width exceeds 1 meter, the weight of a single roll of paper can reach 450kg after the paper is rolled. At this time, in order to meet the load-bearing requirements, the diameter of the shaft needs to be increased, and high-stress alloys need to be used, which increases the weight of the pneumatic shaft. The weight of the pneumatic shaft with a width of 1 meter is generally more than 40kg. Together with the auxiliary tooling on both sides, its length is about 1.6 meters. When manually replacing the paper roll, the pneumatic shaft of this weight and length needs to be lifted manually, which is time-consuming and labor-intensive, and is prone to personal injuries such as squeeze injuries. In addition, it is difficult for one person to complete the operation, and often requires the cooperation of multiple people, resulting in low work efficiency. Therefore, it is of practical significance to study a new type of pneumatic shaft sleeve device. Utility Model Content

[0004] The utility model aims to solve the deficiencies in the prior art and provides a gas expansion shaft sleeve device.

[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a pneumatic shaft sleeve device, comprising: a mobile vehicle, the mobile vehicle comprising a chassis and a load-bearing bracket arranged above the chassis, the load-bearing bracket consisting of two cross bars and a plurality of reinforcing bars arranged between the two cross bars; a supporting device, the two supporting devices being symmetrically arranged above the reinforcing bar, comprising a first supporting part and a second supporting part arranged on the reinforcing bar, and an abutting part connected to the first supporting part and the second supporting part, the vertical height between the highest point of the first supporting part and the reinforcing bar being greater than the vertical height between the highest point of the second supporting part and the reinforcing bar; a fixing device, the fixing device being arranged on one side of the mobile vehicle, comprising a clamping piece for fixing the end of the pneumatic shaft and a driving part for driving the clamping piece to move up and down.

[0006] Furthermore, the abutting portion is configured as a rotating roller, one end of the rotating roller is movably connected to the first supporting portion, and the other end of the rotating roller is movably connected to the second supporting portion.

[0007] Furthermore, the first support portion is a telescopic cylinder, and one end of the rotating roller is movably connected to the telescopic rod of the first support portion.

[0008] Furthermore, an included angle α is formed between the axis of the first support portion and the reinforcing rod, and the included angle α is in the range of 40-50 degrees.

[0009] Furthermore, it also includes a traction assembly, which consists of a transmission part rotatably set on a load-bearing bracket and located between two symmetrically arranged support devices, and a reduction motor for driving the transmission part. The transmission part adopts any one of crawler transmission, belt transmission or roller transmission.

[0010] Furthermore, a position sensor for monitoring the position of the pneumatic shaft to control the start and stop of the reduction motor is provided on one side of the load-bearing bracket close to the fixing device.

[0011] Furthermore, a paper tube limiting plate fixedly connected to the load-bearing bracket is provided between the position sensor and the fixing device, and the paper tube limiting plate is provided with a notch for the air expansion shaft to pass through.

[0012] Furthermore, the driving part is a telescopic cylinder fixedly connected to one side of the mobile vehicle, and the clamping member includes a clamp hinged to the output shaft of the driving part and a bolt for fastening the clamp.

[0013] Furthermore, a lifting device for lifting the load-bearing bracket is vertically arranged between the chassis and the load-bearing bracket, one end of the lifting device is fixedly connected to the chassis, and the other end of the lifting device is fixedly connected to the load-bearing bracket, and a group of the lifting devices is arranged at each of the four corners between the chassis and the load-bearing bracket.

[0014] Furthermore, a push-pull handle is provided on a side of the mobile vehicle close to the fixing device, and a control unit is provided on the push-pull handle.

[0015] The beneficial effects of the utility model are:

[0016] (1) The above arrangement solves the problem of manual lifting, which is time-consuming and labor-intensive and prone to personal injury, when replacing paper rolls, and effectively improves work efficiency and work safety;

[0017] (2) By setting the support device as a triangular support structure, the design is novel and the structural strength is high, the support capacity is effectively improved, and local deformation is avoided. In addition, by setting the vertical height between the highest point of the first support part and the reinforcing rod to be greater than the vertical height between the highest point of the second support part and the reinforcing rod, the abutment part is set at an angle. After the air-expanding shaft is placed, the support device supports the lower position of both sides of the air-expanding shaft, and the support device and the air-expanding shaft are in rolling contact, which is conducive to replacing the paper tube, further improving work efficiency, and sharing the contact stress between the bottom of the air-expanding shaft and the load-bearing bracket, avoiding damage to the air-expanding shaft and deformation of the middle part of the load-bearing bracket due to local stress concentration, extending the service life, and reducing maintenance costs;

[0018] (3) By utilizing the lever principle to lift or lower the pneumatic shaft, it is suitable for heavy pneumatic shafts and only requires a small force to achieve the action, effectively reducing the performance requirements for the fixing device and further reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the air expansion shaft sleeve device provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the top view of the gas expansion shaft sleeve device provided in an embodiment of the present utility model;

[0021] Figure 3 A schematic structural diagram of a support device provided in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of the paper tube limiting plate provided in an embodiment of the present utility model.

[0023] Figure numerals: 1. Mobile vehicle; 2. Chassis; 3. Load-bearing bracket; 31. Cross bar; 32. Reinforcement bar; 4. Support device; 41. First support part; 42. Second support part; 43. Abutment part; 5. Fastener; 51. Clamp; 52. Bolt; 6. Driving part; 7. Conveying part; 8. Reducer motor; 9. Position sensor; 10. Paper tube limit plate; 101. Notch; 11. Lifting device; 12. Push-pull handle; 13. Control unit; 14. Moving wheel. DETAILED DESCRIPTION

[0024] The following is a detailed description of the specific embodiments of the present invention. The present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used are only for describing specific embodiments and are not intended to limit the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] like Figure 1-3 As shown, the utility model provides a pneumatic shaft sleeve device, including a mobile vehicle 1, the mobile vehicle 1 including a chassis 2 and a load-bearing bracket 3 arranged above the chassis 2, the load-bearing bracket 3 consisting of two cross bars 31 and a plurality of reinforcing rods 32 arranged between the two cross bars 31; a supporting device 4, the two supporting devices 4 are symmetrically arranged above the reinforcing rod 32, including a first supporting portion 41 and a second supporting portion 42 arranged on the reinforcing rod 32, and an abutting portion 43 connected to the first supporting portion 41 and the second supporting portion 42, the vertical height between the highest point of the first supporting portion 41 and the reinforcing rod 32 is greater than the vertical height between the highest point of the second supporting portion 42 and the reinforcing rod 32; a fixing device, the fixing device is arranged on one side of the mobile vehicle 1, including a clamping piece 5 for fixing the end of the pneumatic shaft and a driving part 6 for driving the clamping piece 5 to move up and down.

[0029] It should be pointed out that, in actual use, the number of reinforcing rods 32 can be designed according to the type of pneumatic shaft. In the embodiment of the present invention, the load-bearing bracket 3 includes five reinforcing rods 32, which are arranged at equal intervals between the two cross bars 31 and fixed to the cross bars 31 by welding or screwing. A movable wheel 14 is provided at the bottom of the chassis 2. In order to increase the operating space and avoid deformation of the middle part of the reinforcing rod 32, the two supporting devices 4 are respectively arranged at the two ends of the reinforcing rod 32, and the first supporting part 41 and the second supporting part 42 are installed on the reinforcing rod 32 by welding or screwing. The abutment part 43 contacts the pneumatic shaft. Specifically, when the sleeve operation is required, the driving part 6 drives the clamping part 5 to move up and down so that the clamping part 5 fixes the end of the pneumatic shaft, and then the driving part 6 moves downward with the two supporting devices 4 close to the fixing device as the lever fulcrum to lift the free end of the pneumatic shaft for the sleeve operation. After the sleeve operation is completed, the driving part 6 moves upward to put the free end of the pneumatic shaft into position.

[0030] Through the above arrangement, firstly, the problem of manual lifting being time-consuming, labor-intensive and prone to personal injury when replacing paper tubes in the past is solved, thereby effectively improving work efficiency and work safety. Secondly, by setting the support device 4 as a triangular support structure, the design is novel and the structural strength is high, the support capacity is effectively improved, and local deformation is avoided. Moreover, by setting the vertical height between the highest point of the first support part 41 and the reinforcing rod 32 to be greater than the vertical height between the highest point of the second support part 42 and the reinforcing rod 32, the abutment part 43 is inclined. After the air shaft is placed, the support device 4 supports the lower position of both sides of the air shaft, and the support device 4 and the air shaft are in rolling contact, which is conducive to replacing paper tubes, further improving work efficiency, and sharing the contact stress between the bottom of the air shaft and the load-bearing bracket 3, thereby avoiding damage to the air shaft and deformation of the middle part of the load-bearing bracket 3 due to local stress concentration, extending the service life and reducing maintenance costs. Finally, by utilizing the lever principle to lift or lower the air shaft, it is suitable for heavy air shafts, and only a small force is required to achieve the action, effectively reducing the performance requirements for the fixing device, and further reducing the manufacturing cost.

[0031] Specifically, such as Figure 1-3 As shown, the abutment portion 43 is configured as a rotating roller, one end of which is movably connected to the first support portion 41, and the other end of which is movably connected to the second support portion 42. By configuring the abutment portion 43 as a rotating roller rotatably connected between the first support portion 41 and the second support portion 42, sliding friction between the air shaft and the abutment portion 43 is avoided when placing the air shaft and fine-tuning its position, which not only further saves time and effort, improves work efficiency, but also prevents damage to the air shaft and extends its service life.

[0032] Specifically, such as Figure 1-3 As shown, the first support portion 41 is a telescopic cylinder, with one end of the rotating roller movably connected to the telescopic rod of the first support portion 41. It should be noted that the telescopic cylinder can be powered by any of pneumatic, hydraulic, or electric transmissions. The expansion and contraction of the first support portion 41 causes the abutment portion 43 to tilt to different angles to better support pneumatic shafts of varying specifications, effectively improving the applicability of the pneumatic shaft sleeve device. Preferably, the included angle α between the axis of the first support portion 41 and the reinforcing rod 32 is in the range of 40-50 degrees. The design of the angle α is very critical. If the angle α is less than 40 degrees, the vertical distance from the highest point of the first support part 41 to the reinforcing rod 32 is small, which makes the abutment part 43 shorter and the adjustable angle of the abutment part 43 smaller, resulting in poor applicability. If the angle α is greater than 50 degrees, the vertical distance from the highest point of the first support part 41 to the reinforcing rod 32 is too large. Although the applicability is guaranteed, it will cause the overall device to be not compact enough, the manufacturing cost will increase, and it is very easy to hook and pull the wiring harness during use. Only when the angle α is in the range of 40-50 degrees, the support device 4 has sufficient structural strength, and the pneumatic shaft sleeve device has strong applicability, compact structure and low manufacturing cost.

[0033] Specifically, such as Figure 1-3 As shown, it also includes a traction assembly, which is composed of a transmission part 7 that is rotatably set on the load-bearing bracket 3 and located between two symmetrically arranged support devices 4, and a reduction motor 8 for driving the transmission part 7. The transmission part 7 adopts any one of crawler transmission, belt transmission or roller transmission. Through the above arrangement, the movement of the pneumatic shaft can be achieved without manual lifting, further improving work efficiency. Furthermore, a position sensor 9 for monitoring the position of the pneumatic shaft to control the start and stop of the reduction motor 8 is set on the side of the load-bearing bracket 3 close to the fixing device. When it is detected that the pneumatic shaft reaches the preset position, a signal is sent to control the reduction motor 8 to stop running. This arrangement avoids the operational lag during manual start and stop, saving manpower and ensuring the accuracy of the position of the pneumatic shaft.

[0034] Specifically, such as Figure 1-4 As shown, a paper tube stop plate 10 fixedly connected to the load-bearing bracket 3 is provided between the position sensor 9 and the fixing device. This stop plate 10 has a notch 101 for the air-expansion shaft to pass through. It should be noted that the bottom sides of the stop plate 10 are fixedly connected to two crossbars 31, respectively. The stop plate 10 is perpendicular to the load-bearing bracket 3. When the paper tube is installed, the end of the paper tube abuts against the stop plate 10. This arrangement balances the position of the paper tube and the air-expansion shaft, preventing deviation.

[0035] Specifically, such as Figure 1-2As shown, the driving unit 6 is a telescopic cylinder fixedly connected to one side of the mobile vehicle 1, and the clamping member 5 includes a clamp 51 hinged to the output shaft of the driving unit 6 and a bolt 52 for tightening the clamp 51. It should be noted that the driving unit 6 is fixedly connected to the side of the mobile vehicle 1 by welding, and the telescopic cylinder adopts any of pneumatic, hydraulic, and electric transmission. The bottom of the clamp 51 is hinged to the end of the output shaft of the driving unit 6. The clamp 51 is provided with an anti-slip sleeve, and the side of the anti-slip sleeve in contact with the pneumatic shaft is staggered with anti-slip grooves.

[0036] Specifically, such as Figure 1 As shown, a lifting device 11 for raising and lowering the load-bearing bracket 3 is vertically provided between the chassis 2 and the load-bearing bracket 3. One end of the lifting device 11 is fixedly connected to the chassis 2, and the other end of the lifting device 11 is fixedly connected to the load-bearing bracket 3. A set of the lifting devices 11 is provided at each of the four corners between the chassis 2 and the load-bearing bracket 3. It should be noted that the lifting device 11 is a telescopic cylinder, which adopts any of pneumatic, hydraulic, and electric transmission. With the above arrangement, when replacing the paper tube, by adjusting the lifting device 11, the air shaft sleeve device and the air shaft are at the same height, further improving the applicability of the air shaft sleeve device.

[0037] Specifically, such as Figure 1-2 As shown, the mobile vehicle 1 is provided with a push-pull handle 12 on one side close to the fixing device, and a control unit 13 is provided on the push-pull handle 12. The control unit 13 is used to control the extension and retraction of the lifting device 11, the supporting device 4 and the fixing device.

[0038] Specific implementation process: When it is necessary to replace the paper tube, first, the air-expanding shaft is deflated through the air nozzle, and the height of the air-expanding shaft sleeve device and the air-expanding shaft are made the same by adjusting the lifting device 11. One end of the air-expanding shaft is placed on the conveying part 7, and the air-expanding shaft is pulled out from the paper roll by the rotation of the conveying part 7. When the air-expanding shaft is transported to the preset position, the position sensor 9 sends a signal to control the reduction motor 8 to stop running, and then the air-expanding shaft is locked and fixed by the clamp 51 and the bolt 52. Next, the driving part 6 is controlled to move downward, and the two support devices 4 close to the fixing device are used as lever fulcrums to lift the free end of the air-expanding shaft. At the same time, the telescopic rods of the other support devices 4 that are not used as lever fulcrums move downward to separate the air-expanding shaft from the load-bearing abutment part 43, and the paper tube is inserted from the free end of the air-expanding shaft to the paper tube limit plate 10. Then, the air-expanding shaft is inflated. After fixing the paper tube, the driving part 6 and the telescopic rods of the other support devices 4 that are not used as lever fulcrums are controlled to move upward to make the air-expanding shaft fall into place; then the air-expanding shaft is placed in the specified working position.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are exhaustively listed. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] For ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all fall within the scope of protection of the utility model. The scope of protection of the utility model shall be based on the attached claims.

Claims

1. A pneumatic shaft sleeve device, characterized in that: include: A mobile vehicle, comprising a chassis and a load-bearing support arranged above the chassis, wherein the load-bearing support is composed of two cross bars and a plurality of reinforcing bars arranged between the two cross bars; A support device, wherein the two support devices are symmetrically arranged above the reinforcing rod, including a first support portion and a second support portion provided on the reinforcing rod, and an abutment portion connected to the first support portion and the second support portion, wherein the vertical height between the highest point of the first support portion and the reinforcing rod is greater than the vertical height between the highest point of the second support portion and the reinforcing rod; The fixing device is arranged on one side of the mobile vehicle and includes a clamping piece for fixing the end of the air shaft and a driving part for driving the clamping piece to move up and down.

2. The pneumatic shaft sleeve device according to claim 1, characterized in that: The abutting portion is configured as a rotating roller, one end of the rotating roller is movably connected to the first supporting portion, and the other end of the rotating roller is movably connected to the second supporting portion.

3. The pneumatic shaft sleeve device according to claim 2, characterized in that: The first supporting part is a telescopic cylinder, and one end of the rotating roller is movably connected to the telescopic rod of the first supporting part.

4. The pneumatic shaft sleeve device according to claim 3, characterized in that: An included angle α is formed between the axis of the first support portion and the reinforcing rod, and the included angle α is in the range of 40-50 degrees.

5. The pneumatic shaft sleeve device according to claim 1, characterized in that: It also includes a traction assembly, which consists of a transmission part rotatably set on a load-bearing bracket and located between two symmetrically arranged support devices, and a reduction motor for driving the transmission part. The transmission part adopts any one of crawler transmission, belt transmission or roller transmission.

6. The pneumatic shaft sleeve device according to claim 5, characterized in that: A position sensor is provided on one side of the load-bearing bracket close to the fixing device for monitoring the position of the pneumatic shaft to control the start and stop of the reduction motor.

7. The pneumatic shaft sleeve device according to claim 6, characterized in that: A paper tube limiting plate fixedly connected to the load-bearing bracket is provided between the position sensor and the fixing device, and a notch is provided on the paper tube limiting plate for the air expansion shaft to pass through.

8. The pneumatic shaft sleeve device according to claim 1, characterized in that: The driving part is a telescopic cylinder fixedly connected to one side of the mobile vehicle, and the clamping member includes a clamp hinged on the output shaft of the driving part and a bolt for fastening the clamp.

9. The pneumatic shaft sleeve device according to claim 1, characterized in that: A lifting device for lifting the load-bearing bracket is vertically arranged between the chassis and the load-bearing bracket. One end of the lifting device is fixedly connected to the chassis, and the other end of the lifting device is fixedly connected to the load-bearing bracket. A group of the lifting devices is arranged at each of the four corners between the chassis and the load-bearing bracket.

10. The pneumatic shaft sleeve device according to any one of claims 1 to 9, characterized in that: A push-pull handle is provided on one side of the mobile vehicle close to the fixing device, and a control unit is provided on the push-pull handle.

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