Crane rotating small tooth replacing mechanism

Abstract

The utility model relates to the field of gear replacement, and discloses a crane rotating small tooth replacement mechanism which comprises a frame, a supporting panel is fixedly connected to the upper surface of the frame, a supporting assembly is arranged on the upper surface of the supporting panel, a clamping assembly is arranged on the upper surface of the supporting panel, and the supporting assembly comprises a jack. The upper surface of the jack makes contact with a tray, a first through hole is formed in the upper surface of the tray, an operation pipe is arranged on the right surface of the bottom end of the jack, a round hole is formed in the position, close to the center, of the upper surface of the tray, and a positioning hole is formed in the front end of the upper surface of the tray. In the utility model, the hydraulic puller main body is used for controlling the clamping jaw to fix the gear during disassembly, and then the ejector rod in the middle of the hydraulic puller is used for ejecting a bearing connected with the gear, so that the gear can be disassembled, and a jack and a positioning rod are matched to ensure that the gear stably moves downwards; the problem that the bracket is unstable when the small teeth are detached is effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of gear replacement, in particular to a replacement mechanism for the rotating small gear of a crane. Background Technique

[0002] The portal crane is equipped with two sets of electric drive devices on the left and right. The structural form is that the upper end is driven by a motor. The lower end of the motor is connected to a brake. The lower end of the brake is connected to a vertical planetary gear reducer. A small gear is installed at the bottom end of the reducer and meshes with the external teeth of the portal machine slewing bearing to transmit power, so that the portal crane rotates. During the daily maintenance of the portal machine, faults such as broken teeth of the small gear often occur. After the small gear is damaged, the rotating small gear needs to be replaced during maintenance. The position of the rotating small gear is at the rotating platform of the portal machine, about 1 meter above the platform. Since its weight is about 150KG, when replacing the small gear, a small gear replacement mechanism will be used to assist in the replacement.

[0003] In the prior art, the generally adopted disassembly process is to directly hang a hydraulic puller on the rotating small gear, and use manual hoists on both the left and right sides to hang and tighten and support to prevent the puller and the small gear from falling. When installing the small gear, a 400*300 iron frame made of a inch pipe is placed on it, and then the iron frame is lifted by manual hoists on both sides of the iron frame so that the small gear gradually rises to the tooth shaft position as the iron frame is lifted. After finding the tooth gap, continue to lift the manual hoist until it reaches the installation position. The above two disassembly and installation methods have relatively high safety risks. When using a manual hoist to fix the hydraulic puller and the small gear during the disassembly process, it is extremely easy to cause the gear to suddenly fall or tip over during the landing process, resulting in damage to tools and equipment and injury to people. Fix the bolts and install the small gear on the gear shaft with bolts to reduce labor and safety risks. When installing the small gear, use an iron frame to lift the small gear. Due to the heavy weight of the small gear itself and the problem that the manual hoist cannot be synchronized in the case of unbalanced manual pulling, it is extremely easy to cause the center of gravity of the gear to be unstable, resulting in tipping over, causing injury to maintenance personnel and damage to the machine. Therefore, a replacement mechanism for the rotating small gear of a crane is proposed to solve the above problems. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a replacement mechanism for the rotating small gear of a crane, aiming to improve the problem of too low stability when some small gears are disassembled by the replacement mechanism in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical solutions: A replacement mechanism for the rotating small gear of a crane, including a frame, a support panel is fixedly connected to the upper surface of the frame, a support assembly is arranged on the upper surface of the support panel, a clamping assembly is arranged on the upper surface of the support panel, the support assembly includes a jack, a tray is in contact with the upper surface of the jack, a through hole one is opened on the upper surface of the tray, an operation pipe is arranged on the right surface of the bottom end of the jack, a round hole is opened near the center position on the upper surface of the tray, and a positioning hole is opened at the front end of the upper surface of the tray.

[0006] As a further description of the above technical solution:

[0007] The clamping assembly includes a hydraulic puller main body, the bottom end of the hydraulic puller main body is in contact with the position near the center on the upper surface of the support panel, a claw is arranged on the outer wall of the top end of the hydraulic puller main body, and the outer wall of the top end of the hydraulic puller main body slides on the inner wall of the round hole.

[0008] As a further description of the above technical solution:

[0009] A through hole one is opened on the upper surface of the tray near the right side of the round hole, and the claw penetrates and slides on the inner wall of the through hole one.

[0010] As a further description of the above technical solution:

[0011] The support assembly further includes a positioning rod, the positioning rod is fixedly connected to the front end of the upper surface of the support panel, and the positioning rod slides on the inner wall of the positioning hole.

[0012] As a further description of the above technical solution:

[0013] A gear is in contact with the upper surface of the tray, a crescent plate is arranged on the upper surface of the gear, and the top end of the claw is in contact with the upper surface of the crescent plate.

[0014] As a further description of the above technical solution:

[0015] Multiple groups of jacks are provided, and the multiple groups of jacks are symmetrically arranged with the center line of the support panel as the symmetry axis.

[0016] As a further description of the above technical solution:

[0017] The through hole one is set to be elliptical.

[0018] As a further description of the above technical solution:

[0019] The clamping assembly further includes an oil pipe, the oil pipe penetrates and slides on the upper surface of the support panel near the right side of the hydraulic puller main body, a pressure booster is arranged on the right surface of the bottom end of the oil pipe, and the pressure booster is arranged on the right side of the bottom end of the frame.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, when disassembling, the hydraulic puller main body controls the jaws to fix the gear, and then the bearing connected to the gear is pushed by the ejector rod in the middle of the hydraulic puller, so that the gear can be disassembled. Moreover, the combination of the jack and the positioning rod cannot ensure the stable downward movement of the gear, effectively solving the problem of unstable bracket during the disassembly of the small gear.

[0022] 2. In the utility model, when installing, the hydraulic puller main body, the tray and the crescent plate can be disassembled and replaced with a top plate. The gear is positioned through the through holes and positioning bolts arranged on the top plate, and through the multiple groups of jacks arranged, the gear can move upward stably, effectively solving the problem of unstable bracket during the installation of the small gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0024] Figure 2 It is a schematic diagram of the split cross-section of the three-dimensional structure of the gear and the tray in the utility model;

[0025] Figure 3 In the utility model Figure 2 An enlarged schematic diagram of the three-dimensional structure of area A;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the second embodiment in the utility model;

[0027] Figure 5 It is a schematic diagram of the split cross-section of the three-dimensional structure of the top plate and the positioning bolts in the utility model.

[0028] LEGEND DESCRIPTION:

[0029] 1. Frame; 2. Support panel; 31. Positioning rod; 32. Tray; 33. Jack; 34. Operating pipe; 35. First through hole; 36. Round hole; 37. Positioning hole; 41. Hydraulic puller main body; 42. Jaw; 43. Oil pipe; 44. Pressurizer; 5. Gear; 6. Crescent plate; 7. Top plate; 8. Second through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment 1:

[0032] Referring to Figure 1 - Figure 3 , an embodiment provided by the present utility model: a replacement mechanism for the rotating small gear of a crane, including a frame 1, which is welded by multiple groups of vertical square tubes and a base to ensure stability. A support panel 2 is fixedly connected to the upper surface of the frame 1. A hole is provided on the support panel 2 to facilitate the insertion of the oil pipe 43. A support assembly is arranged on the upper surface of the support panel 2, and a clamping assembly is arranged on the upper surface of the support panel 2. The support assembly includes a jack 33. The jack 33 is a prior art and can be realized by those skilled in the art. Since it is a prior art, it will not be described in detail in this case. At the same time, multiple groups are provided to ensure the stable downward movement of the tray 32. The upper surface of the jack 33 contacts the tray 32. A through hole 35 is provided on the upper surface of the tray 32. The provided through hole 35 facilitates the positioning of the hydraulic puller main body 41 to pass through. The right surface of the bottom end of the jack 33 is provided with an operation pipe 34. A round pipe can be inserted into the inner wall of the operation pipe 34 to control the piston rod in the jack 33 to move upward or downward. A round hole 36 is provided near the center position on the upper surface of the tray 32, and a positioning hole 37 is provided at the front end of the upper surface of the tray 32. The positioning rod 31 is inserted into the inner wall of the positioning hole 37 to ensure the stable movement of the tray 32.

[0033] Referring to Figure 2 - Figure 3 , the clamping assembly includes a hydraulic puller main body 41. The hydraulic puller main body 41 is a prior art, and its top end is provided with a jacking rod, which controls the rise or fall of the jacking rod through hydraulic means. The bottom end of the hydraulic puller main body 41 contacts the position near the center on the upper surface of the support panel 2. The hydraulic puller main body 41 is arranged at the center to ensure the stability of removing the gear 5. Claws 42 are arranged on the outer wall of the top end of the hydraulic puller main body 41. The outer wall of the top end of the hydraulic puller main body 41 slides on the inner wall of the round hole 36, and the round hole 36 has a positioning effect on the hydraulic puller main body 41.

[0034] Referring to Figure 1 , Figure 3, a through hole one 35 is provided on the upper surface of the tray 32 near the right side of the round hole 36. The clamping jaw 42 is slidably penetrated through the inner wall of the through hole one 35. The clamping jaw 42 is a prior art component on the hydraulic puller main body 41, and multiple groups of clamping jaws 42 can be controlled to open and close by the hydraulic puller main body 41. The support assembly further includes a positioning rod 31, and the positioning rod 31 is fixedly connected to the front end of the upper surface of the support panel 2. The positioning rod 31 slides in the inner wall of the positioning hole 37. A gear 5 is in contact with the upper surface of the tray 32. A crescent plate 6 is arranged on the upper surface of the gear 5. The crescent plate 6 is made of a 10 mm iron plate. In order to facilitate the small claws to stably grasp the tooth surface, the top end of the clamping jaw 42 is in contact with the upper surface of the crescent plate 6. Multiple groups of jacks 33 are provided, and the multiple groups of jacks 33 are symmetrically arranged with the center line of the support panel 2 as the axis of symmetry. The through hole one 35 is arranged in an elliptical shape, which ensures that the clamping jaw 42 can smoothly move on its inner wall.

[0035] Refer to Figure 1 - Figure 2 , the clamping assembly further includes an oil pipe 43. The pressure intensifier 44 is a prior art. By pressing the push plate thereon, hydraulic pressure will enter the hydraulic puller main body 41 through the oil pipe 43, and those skilled in the art can implement it. Since it is a prior art, it will not be described in detail in this case. The oil pipe 43 is slidably penetrated through the upper surface of the support panel 2 near the right side of the hydraulic puller main body 41. The oil pipe 43 is installed on the lower surface of the hydraulic puller main body 41 and can be disassembled for easy replacement. A pressure intensifier 44 is arranged on the right surface of the bottom end of the oil pipe 43, and the pressure intensifier 44 is arranged on the right side of the bottom end of the frame 1.

[0036] Embodiment Two:

[0037] Refer to Figure 4 - Figure 5 , the difference between the second embodiment and the first embodiment of the present utility model is that in the second embodiment, the tray 32 is changed to a top plate 7, and at the same time, the clamping assembly is removed.

[0038] The top plate 7 is in contact with the upper surface of the jack 33. The positioning rod 31 is slidably penetrated through the lower surface of the front end of the top plate 7. A through hole two 8 is provided on the upper surface of the top plate 7. The provided through hole two 8 facilitates fixing the gear 5 by passing a bolt through it when installing the gear 5, improving the convenience. The gear 5 is in contact with the upper surface of the top plate 7.

[0039] Working principle: When in use, the jack 33 can be first installed on the upper surface of the support panel 2 and adjusted to an appropriate position according to the working requirements. Subsequently, the top plate 7 is placed on the upper surface of the jack 33, and the positioning rod 31 is aligned with and inserted into the positioning hole 37. Then, the hydraulic puller main body 41 is inserted into the inner wall of the circular hole 36 from the lower side of the tray 32, and the jaws 42 are inserted into the inner wall of the through hole 1 35. In this way, the device can be assembled. When disassembling, the hydraulic puller main body 41 is used to control multiple groups of jaws 42 to clamp the gear 5. When clamping, the crescent plate 6 can be installed on the upper surface of the gear 5 to make the clamping of multiple groups of jaws 42 more stable. Subsequently, the hydraulic puller main body 41 is pressurized through the pressure booster 44 and the oil pipe 43, so that the hydraulic puller main body 41 jacks up the connecting shaft of the gear 5. At the same time, the tray 32 and the jack 33 will move downward, and thus the gear 5 will move downward and be disassembled.

[0040] When installing the gear 5, the clamping assembly is removed, and the tray 32 is taken down. The top plate 7 is installed. Subsequently, a crane is used to place the new gear 5 on the upper surface of the top plate 7, adjust the position, and control the jack 33 through the operating pipe 34 to raise the top plate 7 until the installation shaft is inserted into the gear 5. Then, the gear 5 is fixed through the through hole 2 8.

[0041] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A replacement mechanism for the rotating small gear of a crane, comprising a frame (1), characterized in that: A support panel (2) is fixedly connected to the upper surface of the frame (1). A support assembly is provided on the upper surface of the support panel (2), and a clamping assembly is provided on the upper surface of the support panel (2). The support assembly includes a jack (33). A tray (32) is in contact with the upper surface of the jack (33). A through hole one (35) is provided on the upper surface of the tray (32). An operation pipe (34) is provided on the right surface of the bottom end of the jack (33). A round hole (36) is provided near the center position on the upper surface of the tray (32). A positioning hole (37) is provided at the front end of the upper surface of the tray (32).

2. The replacement mechanism for the rotating small gear of a crane according to claim 1, characterized in that: The clamping assembly includes a hydraulic puller main body (41). The bottom end of the hydraulic puller main body (41) is in contact with the position near the center on the upper surface of the support panel (2). Claw jaws (42) are provided on the outer wall of the top end of the hydraulic puller main body (41). The outer wall of the top end of the hydraulic puller main body (41) slides on the inner wall of the round hole (36).

3. The replacement mechanism for the rotating small gear of a crane according to claim 2, characterized in that: A through hole one (35) is provided on the upper surface of the tray (32) adjacent to the right side of the round hole (36). The claw jaws (42) penetrate and slide on the inner wall of the through hole one (35).

4. A replacement mechanism for the rotating small gear of a crane according to claim 1, characterized in that: The support assembly further includes a positioning rod (31). The positioning rod (31) is fixedly connected to the front end of the upper surface of the support panel (2). The positioning rod (31) slides on the inner wall of the positioning hole (37).

5. The replacement mechanism for the rotating small gear of a crane according to claim 2, characterized in that: A gear (5) is in contact with the upper surface of the tray (32). A crescent plate (6) is provided on the upper surface of the gear (5). The top end of the claw jaws (42) is in contact with the upper surface of the crescent plate (6).

6. The replacement mechanism for the small gear of the crane rotation according to claim 1, characterized in that: A plurality of groups of jacks (33) are provided, and the plurality of groups of jacks (33) are symmetrically arranged with the center line of the support panel (2) as the axis of symmetry.

7. The replacement mechanism for the rotating small gear of a crane according to claim 3, characterized in that: The through hole one (35) is elliptical in shape.

8. The replacement mechanism for the rotating small gear of a crane according to claim 2, characterized in that: The clamping assembly further includes an oil pipe (43). The oil pipe (43) penetrates and slides on the upper surface of the support panel (2) adjacent to the right side of the hydraulic puller main body (41). A pressure booster (44) is provided on the right surface of the bottom end of the oil pipe (43). The pressure booster (44) is provided on the right side of the bottom end of the frame (1).

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