Positioning tool for finish machining of small crane end cover

Abstract

The utility model discloses a positioning tool for finish machining of an end cover of a small crane, which belongs to the field of end cover machining and comprises a machining table, a connecting rod is fixedly mounted at the top end of the machining table, a disc is fixedly mounted at the top of the connecting rod, and a second bevel gear is rotatably mounted in the disc. A stud is fixedly installed at one end of the second bevel gear, a fixing rod is installed on the surface of the stud in a threaded mode, and a protection pipe is fixedly installed on the outer wall of the bottom end of the fixing rod. The overall machining time is greatly shortened, the drilling precision is further improved, the practicability of the overall device is improved, in addition, the tool is made to meet the machining requirements of more annular end covers through height adjustment and diameter value adjustment, and the overall practicability of the device is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to end cover processing field, more specifically, relate to a positioning tool for small crane end cover finish machining. BACKGROUND

[0002] The end cover of small crane usually refers to the closed structure part of crane at both ends of main body, and the end cover is generally located at both ends of the main beam or support structure of crane. These parts are connected to the main structure of crane and the machine parts inside, and the surface of the end cover needs to be processed with bolt holes when being processed. The positions of bolt holes are generally symmetrically arranged, and the positions of bolt holes of annular end cover are usually adjacent and the same in size.

[0003] In the prior art, the end cover needs to be first marked with the position of hole processing on its surface, then fixed, and then processed according to the marked position. This process undoubtedly consumes a lot of time, so a tool is needed that can directly position the hole position when clamping and fixing. SUMMARY

[0004] 1. Technical problem to be solved

[0005] In view of the problems existing in the prior art, the utility model aims to provide a positioning tool for small crane end cover finish machining, which can realize the positioning demand of symmetric holes on the surface of the end cover while fixing the end cover. The workers can directly perform hole opening operation according to the positioning, greatly reducing the overall processing time and improving the drilling precision and the practicability of the overall device. In addition, the tool can adapt to the processing demand of more kinds of annular end cover through height adjustment and diameter adjustment, further improving the overall practicability of the device.

[0006] 2. Technical scheme

[0007] To solve the above problems, the utility model adopts the following technical scheme.

[0008] A positioning tool for small crane end cover finish machining, comprising a processing table, a connecting rod is fixedly installed at the top end of the processing table, a disc is fixedly installed at the top of the connecting rod, a bevel gear two is rotatably installed in the disc, a stud is fixedly installed at one end of the bevel gear two, and a fixed rod is threadedly installed on the surface of the stud.

[0009] A protection tube is fixedly installed on the outer wall of the bottom end of the fixed rod, a connecting table is fixedly installed on the side of the fixed rod, a supporting plate is fixedly installed on the outer end of the connecting table, a hexagonal groove is formed at the top end of the fixed rod, a positioning and pressing assembly is movably sleeved in the hexagonal groove, and an end cover is placed on the top surface of the supporting plate.

[0010] The positioning and pressing assembly comprises a screw rod, a transmission ring is screw-mounted on the surface of the screw rod, a U-shaped frame one is fixedly mounted on the outer surface of the transmission ring, a U-shaped frame two is slidingly mounted at one end of the U-shaped frame one, a pressing plate is fixedly mounted at one end of the U-shaped frame two, a hexagonal column is fixedly mounted at the bottom end of the pressing plate, a spring is fixedly connected to the bottom end of the hexagonal column, and a positioning hole is formed in the outer end of the pressing plate.

[0011] Further, a motor is fixedly mounted at the top end of the machining table, a bevel gear one is fixedly sleeved on the output shaft of the motor, a transmission groove is formed in the bottom end of the disc, and the bevel gear one is rotatably installed in the transmission groove and is in mesh with the side surface of the bevel gear two.

[0012] Further, a circular hole is formed in the surface of the supporting plate, and the position of the circular hole corresponds to the positioning hole.

[0013] Further, the surface of the top end of the fixing rod and the side of the inner wall of the end cover are provided as a curved surface structure.

[0014] Further, the bottom end of the screw rod is rotatably installed in the disc, and the bottom end of the spring is fixedly connected in the bottom end of the hexagonal groove.

[0015] Further, the shape of the hexagonal column is matched with the shape of the hexagonal groove.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] (1) The fixing rod can be fixed from the inner side of the end cover, and then the upper and lower surfaces are fixed by cooperating with the supporting plate and the positioning and pressing assembly, and the hole machining of the end cover is directly performed through the supporting plate and the positioning hole, so that the positioning rate of the whole tooling and the machining efficiency of the end cover are improved, and the practicability of the whole device is improved.

[0019] (2) The height position of the pressing plate can be adjusted by the screw rod, so that the distance between the pressing plate and the connecting table can be changed, the placement requirement of end covers with different thicknesses is met, and the overall applicability of the device is improved. DRAWINGS

[0020] Figure 1 It is an overall structure diagram in the utility model;

[0021] Figure 2 It is a three-dimensional assembly structure diagram in the utility model;

[0022] Figure 3The disc and the fixed rod connecting structure schematic diagram in the utility model;

[0023] Figure 4 The disc side surface section structure schematic diagram in the utility model;

[0024] Figure 5 The positioning down-pressing assembly structure schematic diagram in the utility model.

[0025] Mark explanation in the drawing:

[0026] 1, processing platform, 2, disc, 4, end cover, 5, positioning down-pressing assembly, 6, fixed rod, 101, connecting rod, 102, motor, 103, bevel gear one, 201, transmission groove, 202, bevel gear two, 203, stud, 501, screw, 502, transmission ring, 503, U-shaped frame one, 504, U-shaped frame two, 505, down-pressing plate, 506, hexagonal column, 507, spring, 508, positioning hole, 601, protection tube, 602, connecting platform, 603, supporting plate, 604, hexagonal groove. Specific implementation

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the utility model belong to the protection scope of the utility model.

[0028] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like is the orientation or position relationship based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] Embodiment 1:

[0031] Please refer to Figures 1-5 A positioning tool for small crane end cover finishing, comprising a machining table 1, a connecting rod 101 is fixedly installed at the top of the machining table 1, a disc 2 is fixedly installed at the top of the connecting rod 101, a bevel gear two 202 is rotatably installed in the disc 2, a stud 203 is fixedly installed at one end of the bevel gear two 202, a fixed rod 6 is threadedly installed on the surface of the stud 203, a motor 102 is fixedly installed at the top of the machining table 1, a bevel gear one 103 is fixedly sleeved on the output shaft of the motor 102, a transmission groove 201 is formed at the bottom of the disc 2, the bevel gear one 103 is rotatably installed in the transmission groove 201, and the side surface of the bevel gear one 103 is in meshing engagement with the side surface of the bevel gear two 202;

[0032] It should be noted that the surface of the bevel gear two 202 and the surface of the bevel gear one 103 are in meshing engagement to achieve the purpose of one dragging four, so as to simultaneously adjust the movement of the four fixed rods 6, and the corresponding stud 203 and bevel gear two 202 are rotatably installed in the disc 2, which has been subjected to limiting treatment, so that it can only rotate in place, ensuring stable transmission;

[0033] The outer wall of the bottom end of the fixed rod 6 is fixedly installed with a protection tube 601, the side surface of the fixed rod 6 is fixedly installed with a connecting table 602, the outer end of the connecting table 602 is fixedly installed with a supporting plate 603, the top end of the fixed rod 6 is provided with a hexagonal groove 604, the top surface of the supporting plate 603 is placed with an end cover 4, the inside of the hexagonal groove 604 is movably sleeved with a positioning and pressing assembly 5, a circular hole is formed in the surface of the supporting plate 603, the position of the circular hole corresponds to the positioning hole 508, and one side of the surface of the top end of the fixed rod 6 and the inner wall of the end cover 4 is provided as a curved surface structure;

[0034] Specifically, the curved surface structure can make the inner side of the end cover 4 more closely matched, improve the contact pressure, ensure the fixed state during machining, the first circular hole can ensure the integrity of the drilling operation of the end cover 4 from top to bottom, prevent the bottom end from being unable to drill through, and also can exclude the garbage generated by drilling through the hole, and the protection tube 601 can protect the stud 203 from being filled with the thread groove by the debris, thereby affecting the transmission and prolonging the overall service life of the device;

[0035] The positioning and pressing assembly 5 comprises a screw rod 501, the surface of the screw rod 501 is screw-mounted with a transmission ring 502, the outer surface of the transmission ring 502 is fixedly installed with a U-shaped frame one 503, one end of the U-shaped frame one 503 is slidingly installed with a U-shaped frame two 504, one end of the U-shaped frame two 504 is fixedly installed with a pressing plate 505, the bottom end of the pressing plate 505 is fixedly installed with a hexagonal column 506, the bottom end of the hexagonal column 506 is fixedly connected with a spring 507, the outer end of the pressing plate 505 is provided with a positioning hole 508, the bottom end of the screw rod 501 is rotatably installed in the inner portion of the disc 2, the bottom end of the spring 507 is fixedly connected in the inner portion of the bottom end of the hexagonal groove 604, and the shape of the hexagonal column 506 is matched with the shape of the hexagonal groove 604.

[0036] Specifically, the hexagonal column 506 and the hexagonal groove 604 can ensure that the position of the pressing plate 505 as a whole cannot be deviated, and only the in-situ up-down movement can be performed, the U-shaped frame one 503 and the U-shaped frame two 504 are matched to ensure that the two cannot be rotationally displaced, the transmission ring 502 is limited to be moved up and down, the movement of the pressing plate 505 along with the movement of the fixing rod 6 is not affected, the size requirement of the inner portion of the end cover 4 is adapted, the adaptation requirement of different thicknesses of the end cover 4 is improved, and the practicability of the overall device is improved.

[0037] The working principle of the utility model is: first, the fixing rod 6 is sleeved to the innermost end of the stud 203, at this time, the outer ends of the two pressing plates 505 are at the shortest value, the end cover 4 is placed on the surface of the supporting plate 603 in this state, then the bevel gear one 103 is driven to rotate by the driving motor 102, the stud 203 is driven to rotate by the bevel gear two 202, the fixing rod 6 is moved to the inner side surface of the end cover 4, then the screw rod 501 is rotated to drive the transmission ring 502 to move down according to the thickness of the end cover 4, the whole pressing plate 505 is driven to move down in the process of moving down, so that the bottom surface is attached to the top surface of the end cover 4, at this time, the positioning hole 508 corresponds to the round hole of the supporting plate 603, the positions of the four threaded holes are directly determined, and drilling can be directly performed.

[0038] The above merely describes a preferred embodiment of the utility model; however, the protection scope of the utility model is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A positioning tool for finish machining of a small crane end cover, comprising a machining table (1), characterized in that: A connecting rod (101) is fixedly installed at the top of the processing table (1), and a disc (2) is fixedly installed at the top of the connecting rod (101). A helical gear (202) is rotatably installed inside the disc (2), and a stud (203) is fixedly installed at one end of the helical gear (202). A fixing rod (6) is threaded on the surface of the stud (203). A protective tube (601) is fixedly installed on the outer wall of the bottom end of the fixed rod (6), a connecting platform (602) is fixedly installed on the side of the fixed rod (6), a support plate (603) is fixedly installed on the outer end of the connecting platform (602), a hexagonal groove (604) is opened at the top of the fixed rod (6), an end cap (4) is placed on the top surface of the support plate (603), and a positioning and pressing component (5) is movably sleeved inside the hexagonal groove (604); The positioning and pressing assembly (5) includes a screw (501), a transmission ring (502) is threaded onto the surface of the screw (501), a U-shaped frame (503) is fixedly mounted on the outer surface of the transmission ring (502), a U-shaped frame (504) is slidably mounted on one end of the U-shaped frame (503), a pressing plate (505) is fixedly mounted on one end of the U-shaped frame (504), a hexagonal column (506) is fixedly mounted on the bottom end of the pressing plate (505), a spring (507) is fixedly connected to the bottom end of the hexagonal column (506), and a positioning hole (508) is opened on the outer end of the pressing plate (505).

2. The positioning fixture for precision machining of end caps of a small crane according to claim 1, characterized in that: A motor (102) is fixedly installed on the top of the processing table (1). The output shaft of the motor (102) is fixedly sleeved with a helical gear (103). A transmission groove (201) is opened at the bottom of the disc (2). The helical gear (103) is rotatably installed inside the transmission groove (201), and its side surface meshes with the side surface of the helical gear (202).

3. The positioning fixture for precision machining of end caps of a small crane according to claim 1, characterized in that: The surface of the tray (603) is provided with a circular hole, the position of which corresponds to the positioning hole (508).

4. The positioning fixture for precision machining of end caps of a small crane according to claim 1, characterized in that: The surface of the top of the fixing rod (6) and the side that fits the inner wall of the end cap (4) are configured as a curved surface.

5. The positioning fixture for precision machining of end caps of a small crane according to claim 1, characterized in that: The bottom end of the screw (501) is rotatably mounted inside the disc (2), and the bottom end of the spring (507) is fixedly connected to the bottom end of the hexagonal groove (604).

6. The positioning fixture for precision machining of end caps of a small crane according to claim 1, characterized in that: The shape of the hexagonal prism (506) is adapted to the shape of the hexagonal groove (604).

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