Anti-inclination device for tensioning wheel bearing seat

Abstract

The utility model discloses an anti-inclination device for a tensioning wheel bearing seat, which effectively ensures the levelness of the tensioning wheel bearing seat during lifting, and comprises a connecting mechanism fixedly connected with the tensioning wheel bearing seat and a support frame used for carrying out inclination limit on the connecting mechanism, and the connecting mechanism comprises a clamping block and a rotating shaft, the clamping blocks are fixedly connected with the tensioning wheel bearing seat, the rotating shaft is rotatably connected to the rear sides of the clamping blocks, leveling mechanisms used for leveling the rotating shaft are arranged on the left side and the right side of the rotating shaft respectively, and a limiting mechanism used for limiting the height of each clamping block is arranged on the lower side of the corresponding clamping block. According to the tensioning wheel bearing seat leveling device, the purpose of leveling the tensioning wheel bearing seat is effectively achieved, the device can be conveniently installed, the device runs more smoothly, the risk that the tensioning wheel bearing seat suddenly falls is reduced, the safety of the device is improved, and downward resetting of the tensioning wheel bearing seat is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of scraper-type slag scooping machines and relates to an anti-tilting device for a tensioning wheel bearing seat. Background Art

[0002] The scraper slag scraper ("slag scraper") is a key piece of equipment in the slag removal system. Its function is to continuously and efficiently remove the ash from the boiler combustion process. The reliable operation of the scraper is closely linked to the normal operation of the unit. To prevent serious malfunctions such as chain derailment and jamming, an automatic hydraulic tensioning device ("tensioning device") is typically installed at the rear of the scraper. This device automatically adjusts to a certain set oil pressure value, providing constant tension as the scraper chain length changes, ensuring stable operation.

[0003] However, during the actual operation of the slag loader, the following common problems may occur in the tensioning device:

[0004] (1) The bearing seat of the tension wheel is skewed: Since the rotation of the tension wheel is mainly driven by the chains on both sides of the slag picker to rotate counterclockwise, the force on the bearing seats at both ends is always inclined downward at about 45° under the action of the rotation of the tension wheel, thereby driving the bearing seat of the tension wheel to deflect obliquely downward.

[0005] (2) Frequent breakage of the tensioning cylinder lifting lug: The tensioning cylinder lifting lug is the connecting component between the tensioning wheel bearing seat and the tensioning cylinder hydraulic rod. During actual operation on site, it often happens that the tensioning wheel bearing seat is deflected, resulting in excessive force on the tensioning cylinder lifting lug, causing the lifting lug to break from the root of the thread.

[0006] (3) Inconsistent lifting heights on both sides of the tensioning device: During actual on-site operation, the failure of the tensioning device on one side due to the breakage of the lifting lug of the tensioning cylinder on one side or the failure to detect the loss of pressure in the tensioning cylinder on one side in time can lead to the failure of the tensioning device on one side to lift the bearing seat of the tensioning wheel on one side, resulting in inconsistent lifting heights on both sides of the tensioning device, and further causing the deviation of the tensioning device shaft system. If the lifting heights on both sides of the slag scoop are inconsistent and the slag scoop is in operation for a long time, it is easy to cause the lengths of the chain links at both ends of the slag scoop to be inconsistent, which in turn causes equipment hazards such as chain derailment and chain jumping during operation, and it is extremely difficult to install and reset the chain.

[0007] (4) Unilateral deviation of the chain and scraper of the slag machine: When the lifting heights of the two sides of the tensioning device are inconsistent, the chain and scraper of the slag machine also experience unilateral deviation due to the different tightness of the chains on both sides. The tilted scraper crosses irregularly and wears at the tensioning wheel groove, or even breaks. The broken scraper crosses and becomes stuck in a local position of the slag machine body, causing the slag machine to stop operating and undergo emergency repairs.

[0008] In order to solve and avoid the above problems that occur during the actual operation of the slag picker and improve the reliable and stable operation of the equipment, a tensioning wheel bearing seat anti-tilt device that can be installed on-site on the tensioning wheel bearing seat is needed to effectively avoid unplanned shutdown of the slag picker and does not affect the startup and operation of the slag picker and the tensioning device to solve the above problems. Utility Model Content

[0009] In view of the above problems, the present invention proposes an anti-tilt device for a tensioning wheel bearing seat, which effectively solves the problems in the prior art.

[0010] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0011] A tensioning wheel bearing seat anti-tilt device comprises a connecting mechanism fixedly connected to the tensioning wheel bearing seat and a support frame for limiting the tilt of the connecting mechanism, the connecting mechanism comprises a clamping block and a rotating shaft, the clamping block is fixedly connected to the tensioning wheel bearing seat, the rotating shaft is rotatably connected to the rear side of the clamping block, and leveling mechanisms for leveling the rotating shaft are provided on the left and right sides of the rotating shaft, and a limiting mechanism for limiting the height of the clamping block is provided on the lower side of each clamping block.

[0012] Preferably, a screw is provided in the middle of each clamping block, and nuts are provided on the upper and lower sides of the screw, and the screw and the nut cooperate with each other to form a structure in which the clamping block and the tensioning wheel bearing seat are relatively fixed.

[0013] Preferably, an outer spherical seat bearing is provided on the rear side of each clamping block, and the rotating shaft is rotatably connected to each clamping block via the outer spherical seat bearing.

[0014] Preferably, the leveling mechanism includes a spur gear and a spur rack, the spur gear is fixedly connected to the rotating shaft, the spur rack is fixedly connected to the rear side of the supporting frame, and each of the spur gears is meshed with the corresponding spur rack.

[0015] Preferably, the limiting mechanism includes a bevel rack and a limiting block that can move left and right relative to the clamping block, the bevel rack is fixedly connected to the side of the support frame close to the clamping block, and a plurality of bevel gear blocks are fixedly connected to the side of the bevel rack close to the limiting block. A chamfer is provided on the upper side of a side of the limiting block close to the bevel rack, and the bevel gear block and the limiting block cooperate with each other to form a structure for limiting the height of the clamping block.

[0016] Preferably, a sliding sleeve is fixedly connected to the lower side of the clamping block, the limit block is slidably connected to the inside of the sliding sleeve, the side of the limit block away from the bevel rack and the inside of the sliding sleeve are fixedly connected to a spring seat, and a return spring is provided between the two corresponding spring seats.

[0017] Preferably, a left-right oriented guide groove is opened in the middle of the lower side of the sliding sleeve, and a pull rod fixedly connected to the corresponding limit block is slidably connected inside the guide groove. A locking plate that can move forward and backward is provided on the lower side of the clamping block, and a sliding block slidably connected to the locking plate is fixedly connected to the lower side of the clamping block. The locking plate and the pull rod cooperate with each other to form a structure for limiting the limit block.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The utility model has a leveling mechanism, which can level the tensioning wheel bearing seat through gear meshing, so that the tilting torque it is subjected to can be better transmitted to the supporting frame, thereby increasing the horizontal stability of the tensioning wheel bearing seat.

[0020] 2. The utility model has a limiting mechanism, which can reduce the risk of the device falling rapidly in an emergency.

[0021] 3. The utility model has a locking plate and a pull rod. When the chains on both sides of the slag scooper reach a certain length and the chain links are removed, the limit block can be limited by the cooperation of the pull rod and the locking plate, so that it is always released from the helical tooth block. The tensioning wheel bearing seat can then be moved downward to remove the chain links from the chains on both sides of the slag scooper. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the rotating shaft in the utility model.

[0024] Figure 3 It is a structural diagram of the limit block in the utility model.

[0025] Figure 4 It is a structural schematic diagram of the guide groove in the utility model.

[0026] In the figure: 1. Support frame; 2. Clamping block; 3. Rotating shaft; 4. Tensioning pulley bearing seat; 5. Tensioning cylinder; 6. Screw; 7. Nut; 8. External spherical bearing seat; 9. Spur gear; 10. Spur rack; 11. Helical rack; 12. Limit block; 13. Helical gear block; 14. Sliding sleeve; 15. Spring seat; 16. Return spring; 17. Guide groove; 18. Pull rod; 19. Locking plate; 20. Sliding block. DETAILED DESCRIPTION

[0027] The following will be combined with the 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The following is combined with Figure 1-Figure 4 The specific implementation methods of the present utility model are further described in detail.

[0029] Depend on Figure 1-Figure 4 As shown, the utility model includes a connecting mechanism fixedly connected to the tensioning wheel bearing seat 4 and a support frame 1 for limiting the tilt of the connecting mechanism. In order to be able to level the tensioning wheel bearing seat 4, the connecting mechanism includes a clamping block 2 and a rotating shaft 3. The clamping block 2 is fixedly connected to the tensioning wheel bearing seat 4. The rotating shaft 3 is rotatably connected to the rear side of the clamping block 2. A leveling mechanism for leveling the rotating shaft 3 is provided on both sides of the left and right sides of the rotating shaft 3. A limiting mechanism for limiting the height of the clamping block 2 is provided on the lower side of each clamping block 2.

[0030] It should be noted that when the device is in use, one device is provided on each of the front and rear sides of the tensioning wheel bearing seat 4. At this time, the clamping block 2 and the support frame 1 can be tightly matched through the two support frames 1, i.e., the leveling mechanism;

[0031] When in use, the two supporting frames 1 can be installed at appropriate positions on the front and rear sides of the tensioning wheel bearing seat 4 first, and then the clamping block 2 and the rotating shaft 3 are connected to the tensioning wheel bearing seat 4. Then, under the action of the leveling mechanism, the tensioning wheel bearing seat 4 can be kept level when moving up and down. Under the action of the limiting mechanism, the risk of the device falling rapidly in an emergency can be reduced.

[0032] Further, by Figure 1-Figure 4 As shown, in order to facilitate the installation of the device, a screw rod 6 is provided in the middle of each clamping block 2, and a nut 7 is provided on the upper and lower sides of the screw rod 6. The screw rod 6 and the nut 7 cooperate with each other to form a structure in which the clamping block 2 and the tensioning wheel bearing seat 4 are relatively fixed;

[0033] When in use, the clamping block 2 and the tensioning wheel bearing seat 4 can be fixed by the screw 6 and the nut 7.

[0034] Further, by Figure 1-Figure 4 As shown, in order to make the device run more smoothly, an outer spherical bearing 8 is provided on the rear side of each clamping block 2. The outer spherical bearing 8 is a prior art and will not be described in detail here. The rotating shaft 3 is rotatably connected to each clamping block 2 through the outer spherical bearing 8.

[0035] Further, by Figure 1-Figure 4 As shown, in order to maintain the horizontality of the tensioning wheel bearing seat 4 when it is raised or lowered, the leveling mechanism includes a spur gear 9 and a spur rack 10. The spur gear 9 is fixedly connected to the rotating shaft 3, and the spur rack 10 is fixedly connected to the rear side of the support frame 1. Each spur gear 9 is meshed with the corresponding spur rack 10.

[0036] When in use, two leveling mechanisms are provided on the front and rear sides of the tensioning wheel bearing seat 4 through the two supporting frames 1 on the front and rear sides of the tensioning wheel bearing seat 4. At this time, each spur gear 9 can be tightly engaged with the corresponding spur rack 10, so that when the tensioning wheel bearing seat 4 is subjected to force to rise and fall, it can remain level under the meshing action of the gears.

[0037] Further, by Figure 1-Figure 4 As shown, in order to reduce the risk of the tensioning wheel bearing seat 4 suddenly falling, the limiting mechanism includes a bevel rack 11 and a limiting block 12 that can move left and right relative to the clamping block 2. The bevel rack 11 is fixedly connected to the side of the support frame 1 close to the clamping block 2. A plurality of bevel gear blocks 13 are fixedly connected to the side of the bevel rack 11 close to the limiting block 12. A chamfer is provided on the upper side of the side of the limiting block 12 close to the bevel rack 11. The bevel gear blocks 13 and the limiting block 12 cooperate with each other to form a structure for limiting the height of the clamping block 2.

[0038] Further, by Figure 1-Figure 4 As shown, in order to increase the safety of the device, a sliding sleeve 14 is fixedly connected to the lower side of the clamping block 2, and the limit block 12 is slidably connected to the inside of the sliding sleeve 14. A spring seat 15 is fixedly connected to the side of the limit block 12 away from the bevel rack 11 and the inside of the sliding sleeve 14. A return spring 16 is provided between the two corresponding spring seats 15.

[0039] When in use, as each clamping block 2 rises with the tensioning wheel bearing seat 4, the limit blocks 12 at both ends of the tensioning wheel bearing seat 4 move to the left and right directions at the same time when encountering the bevel tooth block 13 to compress the reset spring 16. When the clamping block 2 passes the bevel tooth block 13, the limit blocks 12 at both ends of the tensioning wheel bearing seat 4 pop out under the elastic force of the reset spring 16 and are self-locked with the plane above the bevel tooth block 13; preventing the tensioning cylinder 5 on one side or both sides of the tensioning wheel bearing seat 4 from falling rapidly in the event of sudden decompression, resulting in chain derailment, chain jumping, tensioning wheel teeth and chain getting stuck, inconsistent lifting heights on both sides of the tensioning device, and other faults.

[0040] Further, by Figure 1-Figure 4As shown, in order to facilitate the downward resetting of the tensioning wheel bearing seat 4, a left-right oriented guide groove 17 is opened in the middle of the lower side of the sliding sleeve 14. A pull rod 18 fixedly connected to the corresponding limit block 12 is slidably connected inside the guide groove 17. A locking piece 19 that can move forward and backward is provided on the lower side of the clamping block 2. Two sliding blocks 20 slidably connected to the locking piece 19 are fixedly connected to the lower side of the clamping block 2. The locking piece 19 and the pull rod 18 cooperate with each other to form a structure for limiting the position of the limit block 12.

[0041] During use, when the chains on both sides of the slag scoop reach a certain length and the chain links are reduced, the tensioning cylinder 5 needs to be depressurized to the lowest position. At this time, the locking plate 19 can be slid out of the sliding block 20 first, and the pull rod 18 can be moved in the direction of the sliding block 20. At this time, the pull rod 18 will drive the limit block 12 away from the bevel tooth block 13. When the pull rod 18 is moved to the position of the locking plate 19, the locking plate 19 is matched with the sliding block 20 again. At this time, under the action of the locking plate 19, the limit block 12 can be limited by the pull rod 18, so that it is always released from the bevel tooth block 13, and the tensioning wheel bearing seat 4 can be moved downward to reduce the chain links of the chains on both sides of the slag scoop.

[0042] When the chain is tightened, the two ends of the chain are tightened, and the limit blocks 12 at both ends of the chain are tightened, so that the chain can be tightened. Under the elastic force of the return spring 16, it pops up and is placed on the upper plane of the bevel gear block 13 to form a self-locking; preventing the tensioning oil cylinder 5 on one side or both sides of the tensioning wheel bearing seat 4 from falling rapidly in the case of sudden pressure loss, resulting in chain off, chain jumping, tensioning wheel teeth and chain stuck, inconsistent jacking heights on both sides of the tensioning device, etc.; when the chains on both sides of the slag scoop reach a certain length and the chain links are removed, the tensioning oil cylinder 5 needs to be depressurized to the lowest position, at this time, the locking plate 19 can be slid out of the sliding block 20 first After that, the pull rod 18 is moved in the direction of the sliding block 20. At this time, the pull rod 18 will drive the limit block 12 away from the bevel tooth block 13. When the pull rod 18 is moved to the position of the locking plate 19, the locking plate 19 is matched with the sliding block 20 again. At this time, under the action of the locking plate 19, the limit block 12 can be limited by the pull rod 18, so that it is always released from the bevel tooth block 13. The tensioning wheel bearing seat 4 can be moved downward to reduce the chain links of the chains on both sides of the slag scoop.

[0043] The utility model has a novel structure, an ingenious conception, and is simple and convenient to operate. Through the design, the purpose of being able to level the tensioning wheel bearing seat 4 is effectively achieved, which facilitates the installation of the device, makes the device run more smoothly, ensures the horizontality of the tensioning wheel bearing seat 4 when it is raised and lowered, reduces the risk of the tensioning wheel bearing seat 4 suddenly falling, increases the safety of the device, and facilitates the downward reset of the tensioning wheel bearing seat 4;

[0044] In addition, in terms of labor: the utility model effectively avoids the labor costs caused by the replacement of broken lifting ears, chain jumping and chain breaking of the slag scraper, and the reset of scraper deflection; and the leveling process of the slag scraper is automated, which also reduces labor costs.

[0045] In terms of materials: the utility model effectively avoids the material cost expenditure for replacing spare parts (such as lifting lugs, scrapers, chain rings, tensioning wheel teeth, etc.) caused by failures.

[0046] In terms of safety: it avoids safety risks such as finger pinching and object impact caused by the use of orifice bolts and jack adjustments; it also avoids the equipment safety operation risks of unplanned shutdown of the slag machine or even unit shutdown due to long-term slag machine failure.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tensioning wheel bearing seat anti-tilt device, comprising a connecting mechanism fixedly connected to the tensioning wheel bearing seat and a support frame for tilt-limiting the connecting mechanism, characterized in that: The connecting mechanism includes a clamping block and a rotating shaft. The clamping block is fixedly connected to the tensioning wheel bearing seat. The rotating shaft is rotatably connected to the rear side of the clamping block. Leveling mechanisms for leveling the rotating shaft are provided on the left and right sides of the rotating shaft. The lower side of each clamping block is provided with a limiting mechanism for limiting the height of the clamping block.

2. The anti-tilt device for the tensioning pulley bearing seat according to claim 1, characterized in that: A screw is provided in the middle of each clamping block, and nuts are provided on the upper and lower sides of the screw. The screw and the nut cooperate with each other to form a structure in which the clamping block and the tensioning wheel bearing seat are relatively fixed.

3. The anti-tilt device for the tensioning pulley bearing seat according to claim 1, characterized in that: An outer spherical seat bearing is provided on the rear side of each clamping block, and the rotating shaft is rotatably connected to each clamping block via the outer spherical seat bearing.

4. The anti-tilt device for the tensioning pulley bearing seat according to claim 1, characterized in that: The leveling mechanism includes a spur gear and a spur rack. The spur gear is fixedly connected to the rotating shaft, and the spur rack is fixedly connected to the rear side of the supporting frame. Each of the spur gears is meshed with the corresponding spur rack.

5. The anti-tilt device for the tensioning pulley bearing seat according to claim 1, characterized in that: The limiting mechanism includes a bevel rack and a limiting block that can move left and right relative to the clamping block. The bevel rack is fixedly connected to the side of the support frame close to the clamping block. A plurality of bevel gear blocks are fixedly connected to the side of the bevel rack close to the limiting block. A chamfer is provided on the upper side of a side of the limiting block close to the bevel rack. The bevel gear block and the limiting block cooperate with each other to form a structure for limiting the height of the clamping block.

6. The anti-tilt device for the tensioning pulley bearing seat according to claim 5, characterized in that: The lower side of the clamping block is fixedly connected to a sliding sleeve, the limit block is slidably connected to the inside of the sliding sleeve, the side of the limit block away from the bevel rack and the inside of the sliding sleeve are fixedly connected to a spring seat, and a return spring is provided between the two corresponding spring seats.

7. The anti-tilt device for the tensioning pulley bearing seat according to claim 6, characterized in that: A left-right guide groove is provided in the middle of the lower side of the sliding sleeve, and a pull rod fixedly connected to the corresponding limit block is slidably connected inside the guide groove. A locking plate that can move forward and backward is provided on the lower side of the clamping block, and a sliding block slidably connected to the locking plate is fixedly connected to the lower side of the clamping block. The locking plate and the pull rod cooperate with each other to form a structure for limiting the position of the limit block.

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