A clamp for polishing a jack base

Abstract

The utility model discloses a kind of clamps for jack base polishing, including base, the upper surface of one side of the base is fixedly connected with vertical plate, the side of vertical plate close to base is fixedly connected with bending piece by fixed connector, the front end and rear end of bending piece are respectively installed with telescopic column and fixed length column, the jack base is fixedly installed between fixed length column and telescopic column, and the telescopic column includes column sleeve installed on bending piece;Compared with prior art, the utility model is through the telescopic column and fixed length column of suspension clamping structure synergistic effect, the jack base is completely separated from supporting surface, so that its upper surface, lower surface and circumferential side are fully exposed, the polishing area is significantly improved, and the number of overturning is reduced;The elastic clamping of the first lug and the second lug between the inside positioning sleeve of fixed length column and positioning column forms the rotating pair of multi-angle positioning, realizes 360 ° rotation, and surface polishing processing can be completed without disassembling workpiece.

Description

Technical Field

[0001] This utility model relates to the field of jack processing technology, specifically a jig for grinding jack bases. Background Technology

[0002] Based on the actual needs of the jack manufacturing industry, jacks, as common lifting equipment, typically have bases made of castings, which may have burrs, gate residue, and uneven surfaces. Before assembly, they need to be ground and polished to ensure the precision of fit with other components and the quality of their appearance.

[0003] However, jack bases often have asymmetrical, irregular shapes (such as those with curved edges, bosses, or holes), making them difficult to securely fix using conventional clamps. Traditional methods often involve manually holding the workpiece or placing it on a workbench while the operator holds the grinding equipment. This method has significant drawbacks: only one side of the workpiece can be ground, frequent flipping reduces efficiency, and unstable fixing can easily lead to grinding errors; vibration during manual support can cause grinding deviations and even damage to the workpiece surface. Therefore, this invention proposes a clamp for grinding jack bases. Utility Model Content

[0004] The purpose of this utility model is to provide a jig for grinding the base of a jack, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a jig for grinding a jack base, comprising a base, a vertical plate fixedly connected to one upper surface of the base, a bent component fixedly connected to the side of the vertical plate near the base via a fixed connector, a telescopic column and a fixed-length column respectively installed at the front and rear ends of the bent component, the jack base being fixedly installed between the fixed-length column and the telescopic column, the telescopic column including a column sleeve installed on the bent component, and a lotus-shaped claw provided at one end of the column sleeve near the fixed-length column, and an adjusting column sleeved on the inner surface of the lotus-shaped claw, the same locking and unlocking cylinder being installed on the outer surface of the lotus-shaped claw and the column sleeve.

[0006] As a preferred technical solution of this utility model, the locking and unlocking cylinder has a limiting cavity inside the side near the lotus claw, and the limiting cavity is shaped like a frustum. The locking and unlocking cylinder is provided with an internal thread on the inner wall of one side of the column sleeve, and the locking and unlocking cylinder is threadedly connected to the column sleeve through the internal thread.

[0007] As a preferred technical solution of this utility model, a rotating sleeve is fixedly connected to one end of the column sleeve near the bent part, and a rotating column is rotatably connected to one end of the rotating sleeve near the bent part, and the rotating column is fixedly connected to the bent part.

[0008] As a preferred technical solution of this utility model, a protective pad is provided at the end of the adjusting column near the fixed length column.

[0009] As a preferred technical solution of this utility model, a clamping block is fixedly connected to one end of the fixed-length column near the telescopic column, and an anti-slip pad is provided on the surface of the clamping block, with the surface of the anti-slip pad in contact with the surface of the jack base.

[0010] As a preferred technical solution of this utility model, the fixed-length column includes a positioning sleeve fixedly connected to the bending member and a positioning post fixedly connected to the clamping block, and the positioning sleeve is rotatably sleeved on the positioning post.

[0011] As a preferred technical solution of this utility model, the inner surface of the positioning sleeve is provided with a first protrusion, and the outer surface of the positioning post is provided with a plurality of second protrusions evenly distributed, and the first protrusion is engaged between two adjacent second protrusions.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model discloses a jack base grinding fixture. Through the coordinated action of the telescopic column and the fixed-length column in the suspended clamping structure, the jack base is completely detached from the support surface, fully exposing its upper surface, lower surface, and periphery, significantly increasing the grinding area and reducing the number of flips. In addition, the lotus claw of the telescopic column can adaptively lock the adjusting column under the axial compression of the locking cylinder, and with the help of the protective pad, it can prevent damage to the workpiece. The positioning sleeve inside the fixed-length column and the positioning column are elastically engaged with the first protrusion and the second protrusion to form a multi-angle positioning rotary pair, realizing 360° rotation, and the surface grinding can be completed without disassembling the workpiece.

[0014] Other features and advantages of this invention will be described in detail in the following specific embodiments. Attached Figure Description

[0015] Figure 1 This is a top view of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the telescopic column of this utility model;

[0017] Figure 3 This is a schematic diagram of the locking and unlocking cylinder of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the fixed-length column of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the positioning sleeve and the positioning post of this utility model.

[0020] In the diagram: 1. Base; 2. Vertical plate; 3. Fixed connector; 4. Bending component; 5. Telescopic column; 51. Adjusting column; 52. Column sleeve; 53. Lotus clamp; 54. Locking cylinder; 55. Limiting cavity; 56. Internal thread; 57. Rotating sleeve; 58. Rotating column; 59. Protective pad; 6. Length-fixing column; 61. Positioning sleeve; 62. Positioning column; 63. First protrusion; 64. Second protrusion; 7. Clamping block; 70. Anti-slip pad; 8. Jack base. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Please see Figures 1-5In this embodiment, a jig for grinding a jack base is provided, including a base 1. A vertical plate 2 is fixedly connected to the upper surface of one side of the base 1. A bent component 4 is fixedly connected to the side of the vertical plate 2 near the base 1 via a fixed connector 3. The bent component 4 is U-shaped or V-shaped. A telescopic column 5 and a fixed-length column 6 are respectively installed at the front and rear ends of the bent component 4. The axis of the fixed-length column 6 and the axis of the telescopic column 5 are on the same horizontal line. A jack base 8 is fixedly installed between the fixed-length column 6 and the telescopic column 5. The telescopic column 5 includes a column sleeve 52 installed on the bent component 4, and a lotus claw 53 is provided at the end of the column sleeve 52 near the fixed-length column 6. The inner surface of the lotus claw 53 is fitted with an adjustment mechanism. The same locking cylinder 54 is installed on the outer surface of the column 51, the lotus claw 53 and the column sleeve 52. The locking cylinder 54 has a limiting cavity 55 inside on the side near the lotus claw 53. The limiting cavity 55 is shaped like a frustum. The end of the limiting cavity 55 near the lotus claw 53 is narrow and the end of the lotus claw 53 near the column sleeve 52 is wide. The locking cylinder 54 is provided with an internal thread 56 on the inner wall of the side of the column sleeve 52. The locking cylinder 54 is threaded to the column sleeve 52 through the internal thread 56. The fixed length column 6 is fixedly connected to a clamping block 7 at the end near the telescopic column 5. The surface of the clamping block 7 is provided with an anti-slip pad 70. The surface of the anti-slip pad 70 is in contact with the surface of the jack base 8.

[0025] During clamping, the jack base 8 is placed between the clamping block 7 of the fixed-length column 6 and the adjusting column 51 of the telescopic column 5. The locking cylinder 54 is rotated to push it axially along the column sleeve 52 through the internal thread 56. At this time, the conical surface of the frustum-shaped limiting cavity 55 inside the locking cylinder 54 presses against the lotus claw 53, forcing the lotus claw 53 to contract radially and clamp the adjusting column 51 inside, until the jack base 8 is firmly clamped between the protective pad 59 at the end of the adjusting column 51 and the anti-slip pad 70 on the surface of the clamping block 7. During the grinding process, the workpiece is in a suspended state, and its top, bottom, and side surfaces are fully exposed, which facilitates multi-angle operation of the grinding equipment.

[0026] In this embodiment, a rotating sleeve 57 is fixedly connected to one end of the column sleeve 52 near the bent component 4, and a rotating column 58 is rotatably connected to one end of the rotating sleeve 57 near the bent component 4. The rotating column 58 is fixedly connected to the bent component 4. A protective pad 59 is provided at one end of the adjusting column 51 near the fixed length column 6. The fixed length column 6 includes a positioning sleeve 61 fixedly connected to the bent component 4 and a positioning column 62 fixedly connected to the clamping block 7. The positioning sleeve 61 is rotatably sleeved on the positioning column 62. A first protrusion 63 is provided on the inner surface of the positioning sleeve 61, and a plurality of second protrusions 64 are evenly distributed on the outer surface of the positioning column 62. The first protrusion 63 is engaged with two adjacent second protrusions 64. Between the two protrusions, the first protrusion 63 and the second protrusion 64 are both elastic blocks. When it is necessary to change the processing surface, the operator directly rotates the jack base 8. The workpiece drives the clamping block 7 and the positioning column 62 of the fixed length column 6 to rotate through friction. At this time, the second protrusions 64, which are evenly distributed on the outer wall of the positioning column 62, elastically pass over the first protrusion 63 on the inner surface of the positioning sleeve 61 to achieve indexing positioning. At the same time, the rotating sleeve 57 at the end of the telescopic column 5 rotates around the rotating column 58 fixed to the bent part 4. It should be noted that in order to prevent the locking cylinder 54 from loosening, it can be rotated in the direction of tightening the locking cylinder 54 to ensure smooth and stable rotation, thereby achieving 360° all-round grinding of the workpiece. After grinding is completed, the locking cylinder 54 is loosened in the opposite direction to allow the lotus claw 53 to expand radially and release the adjusting column 51, so that the workpiece can be removed. This fixture effectively solves the problems of clamping stability and processing accessibility of irregular workpieces through the suspended clamping structure and bidirectional rotation.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A jig for grinding the base of a jack, characterized in that, The device includes a base (1), on one side of the upper surface of the base (1) a vertical plate (2) is fixedly connected, and on the side of the vertical plate (2) near the base (1) a bending member (4) is fixedly connected by a fixing connector (3). The front end and rear end of the bending member (4) are respectively equipped with a telescopic column (5) and a fixed length column (6). The jack base (8) is fixedly installed between the fixed length column (6) and the telescopic column (5). The telescopic column (5) includes a column sleeve (52) installed on the bending member (4), and a lotus claw (53) is provided at one end of the column sleeve (52) near the fixed length column (6). An adjusting column (51) is sleeved on the inner surface of the lotus claw (53). The same locking and unlocking cylinder (54) is installed on the outer surface of the lotus claw (53) and the column sleeve (52).

2. The jig for grinding a jack base according to claim 1, characterized in that, The locking cylinder (54) has a limiting cavity (55) on the side near the lotus claw (53), and the limiting cavity (55) is shaped like a frustum. The locking cylinder (54) is provided with an internal thread (56) on the inner wall of the sleeve (52) on one side, and the locking cylinder (54) is threaded to the sleeve (52) through the internal thread (56).

3. The jig for grinding a jack base according to claim 1, characterized in that, The end of the sleeve (52) near the bent part (4) is fixedly connected to a rotating sleeve (57), and the end of the rotating sleeve (57) near the bent part (4) is rotatably connected to a rotating column (58), and the rotating column (58) is fixedly connected to the bent part (4).

4. The jig for grinding a jack base according to claim 1, characterized in that, A protective pad (59) is provided at one end of the adjusting column (51) near the fixed length column (6).

5. A jig for grinding a jack base according to claim 1, characterized in that, The fixed-length column (6) is fixedly connected to a clamping block (7) at one end near the telescopic column (5), and the surface of the clamping block (7) is provided with an anti-slip pad (70), the surface of the anti-slip pad (70) is in contact with the surface of the jack base (8).

6. A jig for grinding a jack base according to claim 5, characterized in that, The fixed-length column (6) includes a positioning sleeve (61) fixedly connected to the bending member (4) and a positioning column (62) fixedly connected to the clamping block (7), and the positioning sleeve (61) is rotatably sleeved on the positioning column (62).

7. A jig for grinding a jack base according to claim 6, characterized in that, The inner surface of the positioning sleeve (61) is provided with a first protrusion (63), and the outer surface of the positioning post (62) is provided with a plurality of second protrusions (64) evenly distributed. The first protrusion (63) is engaged between two adjacent second protrusions (64).

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