Bottom net tensioning roller replacing device

Abstract

The utility model discloses a bottom net tensioning roller replacing device which comprises a moving trolley, a jacking assembly is arranged on the surface of the top of the moving trolley, U-shaped plates are installed on the top of the jacking assembly, a supporting plate is fixedly installed on the top of the U-shaped plate located on the lower portion, and the top of the supporting plate is fixedly connected to the surface of the bottom of the U-shaped plate located on the upper portion. Inner cavities of the two sets of U-shaped plates are slidably connected with a bottom net tensioning roller bearing plate, limiting plates are fixedly installed on the two sides of the top of the bottom net tensioning roller bearing plate, through the arrangement of the two sets of U-shaped plates and the bottom net tensioning roller bearing plate, manual participation is not needed, a tensioning roller is placed on the upper portion, the dead weight of the moving trolley is increased, the overturning situation is avoided, and the moving trolley is convenient to use. And the safety of replacing the tensioning roller is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking production equipment, and particularly relates to a bottom net tensioning roll changing device. Background Art

[0002] The tensioning roll for the bottom net of papermaking machinery is a component of the wire section. It is a device used to adjust the tension of the bottom net under the bottom net, for adjusting the tension of the bottom net. If the tension of the bottom net is too large, the net will be stretched excessively, which is likely to damage the polyester net or enlarge the structure of the mesh holes, thus affecting the quality of the paper; however, if the tension is too small, the net surface will be uneven, which will also affect the quality of the paper.

[0003] When the tension degree of the tensioning roll decreases after long-term use and needs to be replaced, due to the relatively heavy tensioning roll, at present, it relies on manual lifting and placing it on the mobile vehicle, and the new tensioning roll also needs to be lifted, and the operation process is time-consuming and laborious. Summary of the Utility Model

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a bottom net tensioning roll changing device to solve the technical defects proposed in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A bottom net tensioning roll changing device includes a mobile vehicle. The top surface of the mobile vehicle is provided with a jacking assembly. Two sets of U-shaped plates are installed on the top of the jacking assembly. A support plate is fixedly installed on the top of the lower U-shaped plate, and the top of the support plate is fixedly connected to the bottom surface of the upper U-shaped plate. A bottom net tensioning roll bearing plate is slidably connected in the inner cavities of the two sets of U-shaped plates, and limiting plates are fixedly installed on both sides of the top of the bottom net tensioning roll bearing plate.

[0007] The jacking assembly includes two sets of connecting rods on the surfaces of the U-shaped plates opposite to the mobile vehicle. Fixed blocks are fixedly installed at both ends of the two sets of connecting rods on one side, and the two fixed blocks are respectively fixedly connected to the surfaces of the U-shaped plate and the mobile vehicle. Sliding blocks are fixedly connected to both ends of the two sets of connecting rods on the other side, and the two sliding blocks are respectively slidably connected to the surfaces of the U-shaped plate and the mobile vehicle. Connecting plates are rotatably sleeved on the surfaces of the lower connecting rods, the two connecting plates are arranged in a staggered manner and are rotatably connected together through a connecting shaft. One end of the two connecting plates is rotatably sleeved on the surface of the connecting rod at the bottom of the U-shaped plate, and a pushing assembly for pushing the connecting rod to jack up the U-shaped plate is arranged on the surface of the lower connecting rod.

[0008] As a further solution of the utility model, the pushing component includes a second nut seat fixedly inserted in the middle of the connecting rod below one side. The inner cavity of the second nut seat is threadedly connected with a second lead screw. One end of the second lead screw is rotatably connected with a fixing plate. The bottom of the fixing plate is fixedly installed on the surface of the moving vehicle. The other end of the second lead screw is fixedly connected with a turntable.

[0009] As a preferred solution of the utility model, guide grooves are provided on the inner walls on both sides of the U-shaped plate. Guide plates are slidably connected in the inner cavities of the guide grooves. The two groups of guide plates are respectively fixedly connected to the corresponding sides of the bottom net tensioning roller bearing plate.

[0010] As a preferred solution of the utility model, a number of groups of balls are rotatably connected to the bottom inner wall surface of the guide groove. The surfaces of the balls contact the bottom surface of the guide plate.

[0011] As a further solution of the utility model, a circular hole is provided on one surface of the U-shaped plate. A through hole is provided at the position of the bottom net tensioning roller bearing plate corresponding to the circular hole. A first lead screw is rotatably connected in the inner cavity of the circular hole. A first nut seat is threadedly connected to the surface of the first lead screw. The first nut seat is fixedly inserted into the inner cavity of the through hole.

[0012] As a further solution of the utility model, an installation shell is fixedly installed on the top surface of the moving vehicle. A gear is fixedly sleeved on the surface of the second lead screw and corresponding to the inner cavity of the installation shell. Two groups of blocking blocks are rotatably connected to the top inner wall of the installation shell. One ends of the two groups of blocking blocks are respectively located on both sides of the gear. Springs are fixedly installed on the opposite surfaces of the two groups of blocking blocks. The other ends of the two groups of springs are respectively fixedly connected to the inner walls of the corresponding sides of the installation shell. A dial rod is slidably connected to the surface of the installation shell. One end of the dial rod is provided with a thread and is threadedly connected with a nut. One side of the nut is closely attached to the surface of the installation shell.

[0013] Compared with the prior art, the bottom net tensioning roller roll-changing device of the utility model has the following beneficial effects:

[0014] 1. Through the arrangement of the two groups of U-shaped plates and the bottom net tensioning roller bearing plate in the utility model, the tensioning roller is taken out and placed on the upper bottom net tensioning roller bearing plate. The bottom net tensioning roller bearing plate below is pushed from the inner cavity of the U-shaped plate below the tensioning roller to be replaced. And the tensioning roller to be replaced is placed on the surface of the bottom net tensioning roller bearing plate. Then, the bottom net tensioning roller bearing plate is pulled back, and the two groups of U-shaped plates are controlled to descend, so that the new tensioning roller is aligned with the position to be installed, and the new tensioning roller is pushed into the paper machine. Thus, it is not necessary for manual labor to lift the tensioning roller, and it is not necessary for manual labor to unload the damaged tensioning roller from the moving vehicle and then lift the new tensioning roller onto the moving vehicle, which saves time and effort. And placing the new tensioning roller above increases the self-weight of the moving vehicle, avoids the situation of tipping over, and improves the safety of replacing the tensioning roller.

[0015] 2. Through the arrangement of the second lead screw and the blocking block, the present utility model first toggles the lever to one side, tightens the nut, and pushes the blocking block on one side to one side, making it away from the surface of the gear. At this time, the second lead screw is rotated, and the connecting rod is pushed to one side, reducing the distance between the two connecting plates and jacking up the two U-shaped plates, which is convenient and fast. Moreover, the other blocking block limits the rotation direction of the gear. Once the gear reverses, the blocking block immediately abuts against the surface of the gear to fix the gear and prevent the U-shaped plate from suddenly dropping, improving the safety of replacing the tension roller.

[0016] 3. Through the arrangement of the balls, the present utility model reduces the friction between the guide plate and the guide groove, thus facilitating the staff to push. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only the individual cases of the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 It is a cross-sectional structural diagram of the first lead screw in an embodiment of the present utility model;

[0020] Figure 3 It is a structural diagram of the second lead screw in an embodiment of the present utility model;

[0021] Figure 4 It is a cross-sectional structural diagram of the mounting shell in an embodiment of the present utility model.

[0022] REFERENCE SIGNS:

[0023] 100, mobile cart; 200, fixed block; 201, connecting rod; 202, connecting plate; 203, connecting shaft; 204, sliding block; 300, support plate; 301, U-shaped plate; 302, limiting plate; 303, bottom net tension roller bearing plate; 304, guide plate; 305, ball; 306, guide groove; 400, first lead screw; 401, circular hole; 402, first nut seat; 403, through hole; 500, second lead screw; 501, fixed plate; 502, second nut seat; 503, turntable; 600, mounting shell; 601, gear; 602, spring; 603, blocking block; 604, lever; 605, nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model more clear and understandable, the following further details the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present utility model.

[0026] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the communication inside two elements; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0027] See the attached Figures 1-4 As shown in the figure, a bottom net tensioning roll replacement device in an embodiment of the present utility model includes a mobile vehicle 100. A jacking assembly is arranged on the top surface of the mobile vehicle 100. Two sets of U-shaped plates 301 are installed on the top of the jacking assembly. A support plate 300 is fixedly installed on the top of the lower U-shaped plate 301. The top of the support plate 300 is fixedly connected to the bottom surface of the upper U-shaped plate 301. A bottom net tensioning roll carrier plate 303 is slidably connected inside the two sets of U-shaped plates 301. Limiting plates 302 are fixedly installed on both sides of the top of the bottom net tensioning roll carrier plate 303.

[0028] On one side of the lifting assembly, where the U-shaped plate 301 faces the moving vehicle 100, two sets of connecting rods 201 are provided. At both ends of the two sets of connecting rods 201 on one side, fixing blocks 200 are fixedly installed. The two fixing blocks 200 are respectively fixedly connected to the surfaces of the U-shaped plate 301 and the moving vehicle 100. At both ends of the two sets of connecting rods 201 on the other side, sliding blocks 204 are fixedly connected. The two sliding blocks 204 are respectively slidably connected to the surfaces of the U-shaped plate 301 and the moving vehicle 100. Rotating sleeves 202 are sleeved on the surfaces of the connecting rods 201 located below. The two connecting plates 202 are arranged in a staggered manner and are rotatably connected together through a connecting shaft 203. One end of each of the two connecting plates 202 is rotatably sleeved on the surface of the connecting rod 201 at the bottom of the U-shaped plate 301. A pushing assembly is provided on the surface of the connecting rod 201 located below for pushing the connecting rod 201 to lift the U-shaped plate 301.

[0029] Through the arrangement of the two U-shaped plates 301 and the bottom net tensioning roller carrier plate 303, a new tensioning roller is taken out and placed on the upper bottom net tensioning roller carrier plate 303. Subsequently, the bottom net tensioning roller carrier plate 303 located below is pushed from the inner cavity of the U-shaped plate 301 to below the tensioning roller to be replaced, and the tensioning roller to be replaced is placed on the surface of the bottom net tensioning roller carrier plate 303. Subsequently, the bottom net tensioning roller carrier plate 303 is pulled back, and the two U-shaped plates 301 are controlled to descend, so that the new tensioning roller is aligned with the position where it needs to be installed, and the new tensioning roller is pushed into the paper machine. Thus, it is not necessary for the staff to manually lift the tensioning roller, and it is not necessary for the staff to unload the damaged tensioning roller from the moving vehicle 100 and then lift the new tensioning roller onto the moving vehicle 100. Therefore, it is very labor-saving, and placing the new tensioning roller above increases the self-weight of the moving vehicle 100, avoiding the situation of tipping over and improving the safety of replacing the tensioning roller.

[0030] The pushing component includes a second nut seat 502 fixedly inserted into the middle of the connecting rod 201 below one side. A second lead screw 500 is threadedly connected to the inner cavity of the second nut seat 502. One end of the second lead screw 500 is rotatably connected to a fixing plate 501, and the bottom of the fixing plate 501 is fixedly installed on the surface of the moving vehicle 100. The other end of the second lead screw 500 is fixedly connected to a turntable 503. An installation shell 600 is fixedly installed on the top surface of the moving vehicle 100. A gear 601 is fixedly sleeved on the surface of the second lead screw 500 at a position corresponding to the inner cavity of the installation shell 600. Two groups of blocking blocks 603 are rotatably connected to the top inner wall of the installation shell 600. One ends of the two groups of blocking blocks 603 are respectively located on both sides of the gear 601. Springs 602 are fixedly installed on the opposite surfaces of the two groups of blocking blocks 603. The other ends of the two groups of springs 602 are respectively fixedly connected to the inner wall of the installation shell 600 on the corresponding side. A lever 604 is slidably connected to the surface of the installation shell 600. One end of the lever 604 is provided with a thread and is threadedly connected to a nut 605, and one side of the nut 605 is closely attached to the surface of the installation shell 600.

[0031] Through the arrangement of the second lead screw 500 and the blocking block 603, first, the lever 604 is pushed to one side, and the nut 605 is tightened. Then, one of the blocking blocks 603 is pushed to one side to move it away from the surface of the gear 601. At this time, the second lead screw 500 is rotated, and the connecting rod 201 is pushed to one side, reducing the distance between the two connecting plates 202 and jacking up the two U-shaped plates 301, which is convenient and fast. And the other blocking block limits the rotation direction of the gear 601. Once the gear 601 reverses, the blocking block 603 immediately abuts against the surface of the gear 601 to fix the gear 601 and prevent the U-shaped plate 301 from suddenly dropping, thereby improving the safety of replacing the tensioning roller.

[0032] Guide grooves 306 are formed in the inner walls on both sides of the U-shaped plate 301. Guide plates 304 are slidably connected to the inner cavities of the guide grooves 306. The two guide plates 304 are respectively fixedly connected to the corresponding sides of the bottom net tensioning roller bearing plate 303 to limit the movement range of the bottom net tensioning roller bearing plate 303 and prevent it from being displaced.

[0033] A number of balls 305 are rotatably connected to the bottom inner wall surface of the guide groove 306. The surface of the balls 305 contacts the bottom surface of the guide plate 304. The balls 305 reduce the friction between the guide plate 304 and the guide groove 306, thus facilitating the staff to push.

[0034] A circular hole 401 is provided on one side surface of the U-shaped plate 301, and a through hole 403 is provided at a position corresponding to the circular hole 401 on the base net tensioning roller bearing plate 303. A first lead screw 400 is rotatably connected to the inner cavity of the circular hole 401. A first nut seat 402 is threadedly connected to the surface of the first lead screw 400. The first nut seat 402 is fixedly inserted into the inner cavity of the through hole 403. By controlling the number of turns of the first lead screw 400, the moving distance of the base net tensioning roller bearing plate 303 can be accurately controlled.

[0035] When the embodiment of the present utility model is used, first, a new tensioning roller is taken out and placed on the base net tensioning roller bearing plate 303 located above, and the two end rollers of the tensioning roller are clamped in the inner cavity of the limiting plate 302. Then, the tensioning roller is pushed to the required position. The lever 604 is toggled to one side, the blocking block 603 on one side is pushed to one side, and the second lead screw 500 is rotated, so that the connecting rod 201 is pushed to one side, thereby reducing the distance between the two connecting plates 202, jacking up the two U-shaped plates 301. During the rising process, when the gear 601 rotates normally, one end of the blocking block 603 is continuously toggled under the push of the spring 602. Once it rotates in reverse, the blocking block 603 immediately deadlocks the gear 601, jacking up the U-shaped plate 301 located below to the same height as the roller shaft to be replaced. At this time, the lever 604 is toggled to the middle position to fix the gear 601 to prevent the U-shaped plate 301 from descending. Then, the first lead screw 400 located below is rotated to push the base net tensioning roller bearing plate 303 located below forward, so that the limiting plate 302 on its surface clamps the roller shaft of the tensioning roller to be replaced. Then, the tensioning roller is disassembled, and the first lead screw 400 is rotated in the reverse direction, and then the tensioning roller is moved into the inner cavity of the U-shaped plate 301, so as to move the tensioning roller out of the paper machine. At this time, the lever 604 is toggled to the other side and the second lead screw 500 is rotated in the reverse direction, the distance between the two connecting plates 202 becomes larger, so that the heights of the two U-shaped plates 301 begin to descend, and the new tensioning roller located above is aligned with the position to be installed, and the second lead screw 500 is rotated to push the new tensioning roller into the paper machine. Then, the staff can install it.

[0036] The basic principles of the present invention have been shown and described above. The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. The descriptions in the above embodiments and the specification only illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent replacements, and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A bottom mesh tensioning roll changing device, comprising a mobile vehicle (100), characterized in that: A lifting assembly is provided on the top surface of the mobile vehicle (100). Two sets of U-shaped plates (301) are installed on the top of the lifting assembly. A support plate (300) is fixedly installed on the top of the lower U-shaped plate (301). The top of the support plate (300) is fixedly connected to the bottom surface of the upper U-shaped plate (301). A bottom net tensioning roller carrier plate (303) is slidably connected in the inner cavities of the two U-shaped plates (301). Limiting plates (302) are fixedly installed on both sides of the top of the bottom net tensioning roller carrier plate (303). On one side of the lifting assembly where the U-shaped plate (301) and the mobile vehicle (100) are located, two sets of connecting rods (201) are provided. Fixed blocks (200) are fixedly installed at both ends of the two sets of connecting rods (201) on one side. The two fixed blocks (200) are respectively fixedly connected to the surfaces of the U-shaped plate (301) and the mobile vehicle (100). At both ends of the two sets of connecting rods (201) on the other side, sliding blocks (204) are fixedly connected. The two sliding blocks (204) are respectively slidably connected to the surfaces of the U-shaped plate (301) and the mobile vehicle (100). Connecting plates (202) are rotatably sleeved on the surfaces of the lower connecting rods (201). The two connecting plates (202) are arranged in a staggered manner and are rotatably connected together through a connecting shaft (203). One end of each of the two connecting plates (202) is rotatably sleeved on the surface of the connecting rod (201) at the bottom of the U-shaped plate (301). A pushing assembly for pushing the connecting rod (201) to lift the U-shaped plate (301) is provided on the surface of the lower connecting rod (201). The pushing assembly includes a second nut seat (502) fixedly inserted in the middle of the lower connecting rod (201) on one side. A second lead screw (500) is threadedly connected in the inner cavity of the second nut seat (502). One end of the second lead screw (500) is rotatably connected to a fixing plate (501). The bottom of the fixing plate (501) is fixedly installed on the surface of the mobile vehicle (100). The other end of the second lead screw (500) is fixedly connected to a turntable (503).

2. The bottom net tensioning roll changing device according to claim 1, characterized in that: Guide grooves (306) are formed in the inner walls on both sides of the U-shaped plate (301). Guide plates (304) are slidably connected in the inner cavities of the guide grooves (306). The two guide plates (304) are respectively fixedly connected to the corresponding sides of the bottom net tensioning roller carrier plate (303).

3. The bottom mesh tension roller roll-changing device according to claim 2, characterized in that: A number of balls (305) are rotatably connected to the bottom inner wall surface of the guide groove (306). The surfaces of the balls (305) contact the bottom surface of the guide plate (304).

4. The roll changing device for the bottom mesh tensioning roll according to claim 3, characterized in that: A circular hole (401) is formed on one side surface of the U-shaped plate (301). A through hole (403) is formed at a position corresponding to the circular hole (401) on the bottom mesh tensioning roller bearing plate (303). A first lead screw (400) is rotatably connected to the inner cavity of the circular hole (401). A first nut seat (402) is threadedly connected to the surface of the first lead screw (400). The first nut seat (402) is fixedly inserted into the inner cavity of the through hole (403).

5. A bottom net tension roller changing device according to claim 4, characterized in that: An installation shell (600) is fixedly installed on the top surface of the moving cart (100). A gear (601) is fixedly sleeved on the surface of the second lead screw (500) and at a position corresponding to the inner cavity of the installation shell (600). Two groups of blocking blocks (603) are rotatably connected to the top inner wall of the installation shell (600). One ends of the two groups of blocking blocks (603) are respectively located on both sides of the gear (601). Springs (602) are fixedly installed on the opposite surfaces of the two groups of blocking blocks (603). The other ends of the two groups of springs (602) are respectively fixedly connected to the inner wall of the corresponding side of the installation shell (600). A shift lever (604) is slidably connected to the surface of the installation shell (600). One end of the shift lever (604) is provided with threads and is threadedly connected to a nut (605). One side of the nut (605) is closely attached to the surface of the installation shell (600).

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