Belt conveyor roller bearing press fitting device

Abstract

A coke conveyor belt idler bearing press-fitting device includes a frame with a base. A trolley is mounted on the base, and a positioning cylinder is fixedly installed on the trolley. A guide rod is fixedly installed at the rear of the trolley, and a guide sleeve slides on the guide rod. A slide plate is fixedly connected to the guide sleeve, and a rotating shaft is rotatably connected to the slide plate. An opening and closing clamping mechanism is fixedly installed at the front end of the rotating shaft. A lifting mechanism is connected to the slide plate. A hydraulic push rod is fixedly installed at the rear of the base. The lower end of the push rod is hinged to the movable end of the hydraulic push rod, and the upper end is hinged to the rear end of a lever arm. The lever arm is hinged to a support frame via a hinge shaft. The lower part of the support frame is hinged to the frame. A pressure rod is hinged to the front end of the lever arm, and a pressure plate for pressing in the bearing is fixedly connected to the pressure rod. A guide plate is fixedly connected to the front end of the lever arm, and guide tubes are located on both sides of the guide plate. Vertical guide posts are fixedly connected to the frame, and the guide posts are located within the guide tubes. This device can complete the installation of idler bearings.

Description

Technical Field

[0001] This invention relates to idlers on coke conveyor belts, and particularly to a bearing pressing device for idlers on coke conveyor belts, belonging to the field of mechanical technology. Background Technology

[0002] The working environment of the coke conveyor belts in coking plants is quite harsh, and the idler rollers underneath are prone to damage. Therefore, coking plants usually have specialized workshops (teams) for manufacturing idler rollers. A crucial step in idler roller manufacturing is inserting the bearings into the bearing housings at both ends. Because idler rollers are heavy—for example, a commonly used idler roller about 1.2m long and 133mm in diameter weighs around 35kg—the traditional method is to lay the idler roller flat on the ground, with one end against a wall. One worker holds the bearing by hand and places it into the bearing housing, while another worker uses a hammer to force the bearing into the housing. This method has the following problems: First, it's easy to hammer the bearing off-center, leading to quality problems during installation and affecting the roller's lifespan; second, because the bearing housings are generally thin, misalignment during hammering can cause the housing to break, resulting in scrap; third, there's a risk of injury, posing a safety hazard. The current method is obviously inefficient and costly. To address this issue, the applicant visited manufacturers specializing in idler rollers and found that for large idler rollers, the bearings are generally installed by manually hammering them in. The difference is that for short idler rollers, the rollers can be stood upright and the bearings hammered in. Some manufacturers have developed special tools for installing bearings into idler rollers, but these are mostly unused due to their heavy weight and inconvenient operation. The applicant has also communicated with specialized equipment suppliers to seek professional equipment, but the cost of developing such equipment is high and requires significant investment. In the prior art, Chinese patent CN117620642A discloses an installation device for idler roller bearings. Structurally, it is more suitable for shorter idler rollers because bearings need to be installed at both ends of the roller. If the roller is too heavy, it is difficult to operate during the process of changing the roller's position. Chinese patent CN210939082U discloses an idler roller bearing installation device, but if the idler roller is placed horizontally, the bearing is difficult to position, and there is also the problem of easy misalignment. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned problems in the manufacturing of idler rollers for coke conveyor belts and to provide a pressing device for idler roller bearings of coke conveyor belts.

[0004] To achieve the objective of this invention, the following technical solution is adopted: a coke conveyor belt idler roller bearing pressing device, comprising a frame, a base, a trolley on the base, a positioning cylinder fixedly mounted on the trolley, the shape of the positioning cylinder being adapted to the idler roller, a vertical guide rod fixedly mounted at the rear of the trolley, a guide sleeve slidably fitted on the guide rod, a slide plate fixedly connected to the guide sleeve, and a horizontal rotating shaft rotatably connected to the slide plate; an opening and closing clamping mechanism fixedly mounted at the front end of the rotating shaft; the opening and closing clamping mechanism comprises two semi-circular clamps, the two... A semi-circular clamp is hinged at one end. A locking block is fixedly connected to one semi-circular clamp, and a handle is hinged to the other semi-circular clamp. A buckle is hinged to the handle via a hinge shaft in the vertical direction. A limiting plate is fixedly connected to the rear end of the rotating shaft. The limiting plate has two V-shaped limiting grooves spaced 180 degrees apart. A first pressure plate is hinged to the slide plate. A limiting pin is fixedly connected to the end of the first pressure plate. A first spring is connected to the first pressure plate. The other end of the first spring is hung on a hook fixedly set on the slide plate. A lifting mechanism is connected to the slide plate.

[0005] A hydraulic push rod is fixedly installed at the rear of the base. The lower end of the first connecting rod is hinged to the movable end of the hydraulic push rod, and the upper end is hinged to the rear end of the lever arm. The lever arm is hinged to the support frame through a horizontal hinge shaft. The lower part of the support frame is hinged to the machine frame. The pressure rod is hinged to the front end of the lever arm. A second pressure plate for pressing the bearing is fixedly connected to the pressure rod. A guide plate is fixedly connected to the front end of the lever arm. The guide plate has guide tubes on both sides. A vertical guide post is fixedly connected to the machine frame. The guide post is located in the guide tube.

[0006] Furthermore, the lifting mechanism connected to the skateboard is as follows: a lifting shaft is rotatably connected to the upper part of the trolley, the lifting shaft is rotatably connected to a sliding sleeve, the sliding sleeve is slidably disposed at the upper end of the trolley, a pry arm is fixedly connected to the rear end of the lifting shaft; a drive arm is fixedly connected to the front end of the lifting shaft, the other end of the drive arm is hinged to a hanging rod, and the lower end of the hanging rod is fixedly connected to the skateboard.

[0007] Furthermore, the roller bearing pressing device also includes a roller unloading mechanism, which includes two support rods located on the left and right sides respectively. The rear ends of the two support rods are respectively hinged to the two U-shaped sides of a U-shaped frame. The bottom edge of the U-shaped frame is rotatably connected to the machine frame. A steel wire rope is connected to the U-shaped side of the U-shaped frame. After passing over a fixed pulley installed on the machine frame, the hanging end of the steel wire rope is connected to a counterweight rod. A locking and positioning mechanism is installed on the machine frame. The locking and positioning mechanism includes a long groove in the front-rear direction fixedly connected to the machine frame. The front end of a first plate is hinged to the long groove, and a gravity block is fixedly connected to the first plate. The front end of a second plate is hinged to the rear end of the first plate. A locking block is hinged to the rear end of the two plates. The locking block has a hook-shaped opening locking groove. One end of the second spring is hung on the locking block, and the other end is hung on the second plate in front of the locking block. A locking rod that matches the locking groove is fixedly connected to the U-shaped side of the U-shaped frame. A cam is placed under the first plate and is fixedly connected to the L-shaped trigger handle. Rotating the trigger handle can raise the rear end of the first plate. Releasing the trigger handle will cause the rear end of the first plate to fall under the action of the gravity block. Support crossbars are fixedly connected to the left and right sides of the frame. The two support bars are located on the support crossbars on the corresponding sides. When the support crossbars are retracted, the locking rod touches the upper edge of the locking groove and enters the hook-shaped opening locking groove.

[0008] Furthermore, a slot is provided on the side of the long slot, and the horizontal edge of the L-shaped trigger handle protrudes from the slot.

[0009] Furthermore, a hand grip is fixedly connected to the support rod.

[0010] Furthermore, a front-to-back guide rail is fixedly installed on the base, and the trolley slides back and forth on the guide rail.

[0011] Furthermore, the base has multiple indexing pin holes, and the trolley has pin holes, into which pins can be inserted.

[0012] The positive and beneficial technical effects of this invention are as follows: This device can easily complete the bearing installation of large idler rollers with high installation accuracy, saving time and effort. The specific implementation method will be described in detail below. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first orientation of the present invention.

[0014] Figure 2 This is a schematic diagram of the second orientation of the present invention.

[0015] Figure 3 This is a schematic diagram of the third-party position of the present invention.

[0016] Figure 4 This is an enlarged view of the opening and closing clamp mechanism.

[0017] Figure 5 This is an enlarged view of the limit plate.

[0018] Figure 6 This is an enlarged diagram of the pry bar.

[0019] Figure 7 This is an enlarged schematic diagram of the long groove.

[0020] Figure 8 This is a schematic diagram of the counterweight bar side.

[0021] Figure 9 This is a schematic diagram of the car.

[0022] Figure 10 This is a schematic diagram of a cam-linked L-shaped rod.

[0023] Figure 11 This is a schematic diagram of the locking block.

[0024] Figure 12 This is a state diagram of the unloading of the rollers according to the present invention. Detailed Implementation

[0025] To more fully explain the implementation of the present invention, implementation examples are provided. These implementation examples are merely illustrative of the present invention and do not limit the scope of the present invention.

[0026] The present invention will be described in detail with reference to the accompanying drawings, in which the following references are made: 1: base; 2: frame; 3: trolley; 4: opening and closing clamp mechanism; 401: semi-circular clamp A; 402: semi-circular clamp B; 403: handle; 404: locking block; 405: buckle ring; 5: hydraulic push rod; 6: first connecting rod; 7: lever arm; 8: support frame; 9: pressure rod; 10: guide tube; 11: guide column; 12: pry bar; 13: support rod; 14: hand grip; 15: positioning cylinder; 16: idler roller; 17: sliding plate; 18: guide sleeve; 19: drive arm; 20: lifting rod; 21: U-shaped frame; 22: 23: Long groove; 24: Support crossbar; 25: Guide rod; 26: Rotating shaft; 27: Limiting plate; 28: Limiting groove; 29: First pressure plate; 30: Limiting pin; 31: First spring; 32: Lifting shaft; 33: Sliding sleeve; 34: First plate; 35: Gravity block; 36: Second plate; 37: Locking block; 38: Hook-shaped opening locking groove; 48: Locking rod; 49: Second spring; 40: Slot; 41: L-shaped trigger handle; 42: Steel wire rope; 43: Fixed pulley; 44: Counterweight rod; 45: Indexing pin hole; 46: Pin; 47: Guide rail; 48: Roller; 49: Cam.

[0027] As shown in the attached figure, the idler bearing pressing device for the coke conveyor belt includes a frame 2, a base 2 at the bottom of the frame, a trolley 3 on the base, and a front-to-back guide rail 46 fixedly installed on the base. The trolley slides (rolls) on the guide rail 47 via rollers 47. The base has multiple indexing pin holes 44, and the trolley has pin holes. Pins can be inserted into the pin holes and indexing pin holes to lock the trolley in a set position on the base.

[0028] A positioning cylinder 15 is fixedly installed on the trolley. The shape of the positioning cylinder is adapted to the idler roller. When pressing the bearing, the lower end of the idler roller is inserted into the positioning cylinder. A guide rod 24 in the vertical direction is fixedly installed at the rear of the trolley. A guide sleeve 18 is slidably fitted on the guide rod. A slide plate 17 is fixedly connected to the guide sleeve. A rotating shaft 25 in the horizontal direction is rotatably connected to the slide plate. An opening and closing clamping mechanism is fixedly installed at the front end of the rotating shaft. The opening and closing clamping mechanism includes two semi-circular clamps, such as semi-circular clamp A as shown in 401 and semi-circular clamp B as shown in 402. The two semi-circular clamps are hinged at one end. A locking block 404 is fixedly connected to one semi-circular clamp, and a handle 403 is hinged to the other semi-circular clamp. A buckle 405 passes through... The vertical hinge shaft is hinged to the handle; by rotating the handle, the buckle can be fastened to the locking block. After rotating the handle, the buckle can be disengaged from the locking block. When the two clamps are together, they tightly clamp the idler roller (the surface of the idler roller is a rubber layer). A limiting plate 26 is fixedly connected to the rear end of the rotating shaft. The limiting plate has two V-shaped limiting grooves 27 spaced 180 degrees apart. When the idler roller is in the vertical direction, the limiting pin is located in the limiting groove, restricting the rotation of the rotating shaft. After lifting, the limiting pin of the idler roller automatically disengages from the limiting groove. A first pressure plate 28 is hinged to the slide plate. A limiting pin is fixedly connected to the end of the first pressure plate. A first spring 30 is connected to the first pressure plate. The other end of the first spring is hung on a hook fixedly set on the slide plate. A lifting mechanism is connected to the slide plate.

[0029] The lifting mechanism connected to the skateboard consists of a lifting shaft 31 rotatably connected to the upper part of the trolley. The lifting shaft is rotatably connected to a sliding sleeve 32, which slides left and right at the upper end of the trolley. A pry arm 12 is fixedly connected to the rear end of the lifting shaft. A drive arm 19 is fixedly connected to the front end of the lifting shaft, and the other end of the drive arm is hinged to a hanging rod 20. The lower end of the hanging rod is fixedly connected to the skateboard. Prying the pry arm drives the hanging rod to move upward, causing the skateboard to slide upward.

[0030] A hydraulic push rod 5 is fixedly installed at the rear of the base. The lower end of the first connecting rod 6 is hinged to the movable end of the hydraulic push rod, and the upper end is hinged to the rear end of the lever arm 7. The lever arm 7 is hinged to the support frame 8 through a horizontal hinge shaft. The lower part of the support frame is hinged to the machine frame. The pressure rod 9 is hinged to the front end of the lever arm. A second pressure plate for pressing the bearing is fixedly connected to the pressure rod. A guide plate is fixedly connected to the front end of the lever arm. The guide plate has guide tubes 10 on both sides. A vertical guide post 11 is fixedly connected to the machine frame. The guide post is located in the guide tube, thus ensuring that the pressure direction of the pressure rod is vertical.

[0031] As a further optimization, the roller bearing pressing device also includes a roller unloading mechanism, which includes two support rods 13 located on the left and right sides respectively. A handle 14 is fixedly connected to the support rod. The handle can be set on one support rod. Support crossbars 23 are fixedly connected to the left and right sides of the frame. The two support rods are located on the support crossbars on the corresponding sides respectively.

[0032] The rear ends of the two support rods are respectively hinged to the two U-shaped ends of a U-shaped frame 21. The bottom edge of the U-shaped frame 21 is rotatably connected to the machine frame. A steel wire rope 41 is connected to the U-shaped edge of the U-shaped frame. After passing over a fixed pulley 42 installed on the machine frame, the hanging end of the steel wire rope is connected to a counterweight rod 43. A locking and positioning mechanism is installed on the machine frame. The locking and positioning mechanism includes a long groove 22 fixedly connected to the machine frame in the front-rear direction. The front end of the first plate 33 is hinged to the long groove. A gravity block 34 is fixedly connected to the first plate. When there is no external force, the gravity block presses down on the rear end of the first plate, and the cam presses down on the first plate. The front end of the second plate 35 is hinged to the rear end of the first plate. A locking block 36 is hinged to the rear end of the second plate. A hook is opened on the locking block 36. The first plate 34 has an open locking groove 3601. One end of the second spring 38 is hung on the locking block, and the other end is hung on the second plate in front of the locking block. A locking rod 37 adapted to the locking groove is fixedly connected to the U-shaped side of the U-shaped frame. A cam 48 is placed under the first plate and is fixedly connected to the L-shaped trigger handle 40. A slot 39 is opened on the side of the long groove. The horizontal side of the L-shaped trigger handle passes through the slot. Rotating the trigger handle can make the cam rotate around the side of the L-shaped trigger handle along the length of the long groove, driving the rear end of the first plate 34 to rise. Releasing the trigger handle will cause the rear end of the first plate to fall under the action of the gravity block, and the cam will reset. When the support bar retracts, the locking rod touches the upper side of the locking groove and enters the hook-shaped open locking groove 3601.

[0033] The pressing method of this device is as follows: The trolley is moved to the front position of the base, the pin is used for positioning, and the lower end of the idler roller is inserted into the positioning cylinder manually or with a lifting tool. The pin is then removed, and the trolley is moved backward so that the bearing is below the pressure plate. The pin is then inserted to position the trolley, the two semi-circular clamps are closed, and the buckles are aligned with the locking blocks. The handle is turned to clamp the idler roller, the bearing is placed, and the hydraulic push rod is activated. The hydraulic push rod drives the front end of the lever arm to press downward, pressing the bearing into the bearing seat through the pressure plate. The hydraulic push rod retracts, the pressure rod resets, and the pry bar is manually rotated. When in motion, the drive arm raises the boom (the sliding sleeve can move on the upper surface of the frame behind the trolley). The boom raises the slide along the guide rod, and the lower part of the idler roller disengages from the positioning cylinder. Then, the idler roller is rotated 180 degrees, and the limit pin disengages from one limit groove to another. The pry bar is lowered, and the idler roller falls under the action of gravity. The lower end of the idler roller is inserted into the positioning cylinder. Another bearing is placed, and the hydraulic push rod is activated. The hydraulic push rod drives the front end of the lever arm to press down, pressing the bearing into the bearing seat at the other end through the pressure plate. The hydraulic push rod retracts, and the pressure rod resets.

[0034] After the bearings at both ends are press-fitted, pry the pry bar to disengage the lower part of the idler roller from the positioning cylinder. Then rotate the idler roller approximately 90 degrees until it is roughly horizontal. Hold the idler roller with one hand and turn the trigger handle with the other. The trigger handle drives the cam to rotate, lifting the first plate. The lifting of the first plate causes the second plate to move forward, disengaging the locking rod from the hook-shaped opening locking groove. The rear end of the U-shaped frame is unrestrained, and under the action of gravity, the U-shaped frame rotates around the bottom edge, driving the support rod to slide diagonally forward and downward along the support crossbar until it moves under the idler roller. Turn the handle to open the clamping mechanism. The roller falls onto the support rod and rolls down onto the receiving car below. After completion, push the handle. With the auxiliary force generated by the counterweight, the U-shaped frame rotates around the bottom edge. After the locking rod touches the locking block, it drives the locking block to rotate. The locking rod enters the hook-shaped open locking groove 3601. After releasing, the locking rod presses against the hook-shaped open locking groove and works together with the second spring to reset the locking block. The locking rod l falls into the hook-shaped open locking groove and is limited by the hook-shaped open locking groove.

[0035] After a detailed description of the embodiments of the present invention, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. A coke belt conveyor roller bearing press fitting device, comprising a frame, the frame having a base, characterized in that: A trolley is mounted on the base, and a positioning cylinder is fixedly installed on the trolley. The shape of the positioning cylinder is adapted to the idler roller. A guide rod in the vertical direction is fixedly installed at the rear of the trolley, and a guide sleeve is slidably fitted on the guide rod. A slide plate is fixedly connected to the guide sleeve, and a rotating shaft in the horizontal direction is rotatably connected to the slide plate. An opening and closing clamping mechanism is fixedly installed at the front end of the rotating shaft. The opening and closing clamping mechanism includes two semi-circular clamps, which are hinged together at one end. A locking block is fixedly connected to one semi-circular clamp, and a handle is hinged to the other semi-circular clamp. A buckle is hinged to the handle through a vertical hinge shaft. A limiting plate is fixedly connected to the rear end of the rotating shaft. The limiting plate has two V-shaped limiting grooves spaced 180 degrees apart. A first pressure plate is hinged to the slide plate. A limiting pin is fixedly connected to the end of the first pressure plate. A first spring is connected to the first pressure plate, and the other end of the first spring is hung on a hook fixedly installed on the slide plate. A lifting mechanism is connected to the slide plate. A hydraulic push rod is fixedly installed at the rear of the base. The lower end of the first connecting rod is hinged to the movable end of the hydraulic push rod, and the upper end is hinged to the rear end of the lever arm. The lever arm is hinged to the support frame through a hinge shaft in the horizontal left and right direction. The lower part of the support frame is hinged to the machine frame. The pressure rod is hinged to the front end of the lever arm. A second pressure plate for pressing the bearing is fixedly connected to the pressure rod. A guide plate is fixedly connected to the front end of the lever arm. The guide plate has guide tubes on both sides. A guide post in the vertical direction is fixedly connected to the machine frame. The guide post is located in the guide tube. The roller bearing pressing device further includes a roller unloading mechanism, which includes two support rods located on the left and right sides respectively. The rear ends of the two support rods are respectively hinged to the two U-shaped sides of a U-shaped frame. The bottom edge of the U-shaped frame is rotatably connected to the machine frame. A steel wire rope is connected to the U-shaped side of the U-shaped frame. After passing over a fixed pulley installed on the machine frame, the hanging end of the steel wire rope is connected to a counterweight rod. A locking and positioning mechanism is installed on the machine frame. The locking and positioning mechanism includes a long groove in the front-rear direction fixedly connected to the machine frame. The front end of a first plate is hinged to the long groove, and a gravity block is fixedly connected to the first plate. The front end of a second plate is hinged to the rear end of the first plate. A locking block is hinged to the rear end of the component, and a hook-shaped opening locking groove is provided on the locking block. One end of the second spring is hung on the locking block, and the other end is hung on the second plate in front of the locking block. A locking rod that matches the locking groove is fixedly connected to the U-shaped side of the U-shaped frame. A cam is placed under the first plate and is fixedly connected to the L-shaped trigger handle. Rotating the trigger handle can raise the rear end of the first plate. Releasing the trigger handle will cause the rear end of the first plate to fall under the action of the gravity block. Support crossbars are fixedly connected to the left and right sides of the frame. The two support bars are located on the support crossbars on the corresponding sides. When the support crossbars are retracted, the locking rod touches the upper edge of the locking groove and enters the hook-shaped opening locking groove.

2. The coke conveyor belt idler bearing press-fitting device according to claim 1, characterized in that: The lifting mechanism connected to the skateboard is as follows: a lifting shaft is rotatably connected to the upper part of the trolley, the lifting shaft is rotatably connected to a sliding sleeve, the sliding sleeve is slidably disposed at the upper end of the trolley, a pry arm is fixedly connected to the rear end of the lifting shaft; a drive arm is fixedly connected to the front end of the lifting shaft, the other end of the drive arm is hinged to a hanging rod, and the lower end of the hanging rod is fixedly connected to the skateboard.

3. The coke conveyor belt idler bearing press-fitting device according to claim 1, characterized in that: A slot is provided on the side of the long slot, and the horizontal edge of the L-shaped trigger handle protrudes from the slot.

4. The coke conveyor belt idler bearing press-fitting device according to claim 1, characterized in that: A handle is fixedly connected to the support rod.

5. The coke conveyor belt idler bearing press-fitting device according to claim 1, characterized in that: The base is fixedly mounted with guide rails in the front and back directions, and the trolley slides back and forth on the guide rails.

6. The coke conveyor belt idler bearing press-fitting device according to claim 4, characterized in that: The base has multiple indexing pin holes, and the carriage has pin holes, into which pins can be inserted.

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