A clamp for a gear box

Abstract

This utility model relates to the field of tooling and fixture technology, specifically disclosing a fixture for a gearbox. The gearbox includes two half-shells, and the fixture can clamp either half-shell at a time. The fixture includes: a base plate with multiple mounting holes; multiple detachable positioning units mounted on the base plate, each positioning unit having a locking element that passes through the mounting holes and abuts against the half-shell; multiple detachable pressing units mounted on the base plate, each pressing unit capable of lifting, lowering, and rotating, and used to press against the half-shell; and multiple detachable lifting units mounted on the base plate, located below the pressing units, and adjustable in height. This utility model achieves clamping of two half-shells with a single fixture, facilitates machining and forming, has low component costs, and reduces production costs.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically a fixture for gearboxes. Background Technology

[0002] Vacuum pumps, such as Roots vacuum pumps, mainly consist of a motor and a gearbox for power transmission. The gearbox housing requires the use of fixtures during the machining process. The gearbox housing is the reference component of the entire gearbox, and its machining accuracy, such as the coaxiality and parallelism of the hole system, the perpendicularity of the plane to the hole, and the dimensional accuracy of each bearing hole, directly affects the gear meshing accuracy, transmission efficiency, and equipment life.

[0003] Currently, there are many clamping structures for gearbox bodies, such as a gearbox clamp disclosed in patent number CN222874392U, which includes a base, a fixed plate, a fixed claw, and a clamping assembly. However, such clamps are suitable for gearboxes with an integrated structure. For gearboxes formed by assembling two half-shells, two types of clamps are required for clamping, which is costly and has poor positioning effect. Utility Model Content

[0004] The purpose of this invention is to provide a clamp for a gearbox to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a clamp for a gearbox, the gearbox comprising two half-shells, the clamp being capable of clamping either half-shell at a time, the clamp comprising:

[0006] A substrate having multiple mounting holes;

[0007] Multiple positioning units are detachably mounted on the substrate. Each positioning unit is equipped with a locking member for inserting into a mounting hole. The positioning unit is used to abut against the half-shell.

[0008] Multiple clamping units are detachably mounted on the base plate. The clamping units are capable of lifting, lowering, and rotating, and are used to press against the half-shell.

[0009] Multiple lifting units are detachably mounted on the base plate, the lifting units being located below the pressing unit, and the height of the lifting units being adjustable.

[0010] Furthermore, the semi-shell has a flat upper side and a lower side, which abut against the positioning unit; the left side and right side of the semi-shell have outwardly extending edges, which are disposed between the lifting unit and the pressing unit.

[0011] Furthermore, the positioning unit includes a base plate, on which a positioning rod is horizontally arranged. The positioning rod is threadedly engaged with the base plate and abuts against the upper and lower sides.

[0012] Furthermore, the clamping unit includes a first connecting rod, a second connecting rod, and a clamping plate. The clamping plate is sleeved on the first connecting rod and the second connecting rod. The first connecting rod and the second connecting rod are arranged side by side and connected to the mounting hole. The clamping plate is pressed against the upper end of the edge.

[0013] Furthermore, a first adjusting member is screwed onto the first connecting rod, the first adjusting member being located below the pressure plate, and a first locking body is screwed onto the second connecting rod, the first locking body being located above the pressure plate.

[0014] Furthermore, the lifting unit includes a third connecting rod, which is screwed into the mounting hole, and a contact block is provided at the upper end of the third connecting rod, which abuts against the edge.

[0015] This utility model has the following beneficial effects:

[0016] This invention can clamp two half-shells with a single clamp, which is easy to process and form, has low component cost, and reduces production cost.

[0017] This invention achieves clamping and fixing of the semi-shell at a certain height by setting up a lifting unit and a pressing unit, thus providing heat dissipation space.

[0018] This invention improves clamping stability and provides accurate positioning function through a positioning unit. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the clamp for the gearbox in Embodiment 1 combined with a half-shell;

[0021] Figure 2 for Figure 1 An enlarged schematic diagram of the fixture;

[0022] Figure 3 for Figure 2 A top-down view;

[0023] Figure 4This is a schematic diagram of the clamp for the gearbox in Embodiment 2 combined with another half-shell. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] like Figures 1-3 As shown, the fixture for the gearbox in this embodiment includes two half-shells 100a and b. The two half-shells 100a and b are bolted together to form a complete gearbox structure. This fixture can clamp either half-shell 100a or b at a time. This embodiment provides an example of clamping half-shell 100a.

[0027] Specifically, the fixture includes a base plate 10, a plurality of positioning units 20 detachably disposed on the base plate 10, a plurality of clamping units 30 detachably disposed on the base plate 10, and a plurality of lifting units 40 detachably disposed on the base plate 10.

[0028] Here, the semi-shells 100a and b have a flat upper side 110 and a lower side 120, which abut against the positioning unit 20; the left and right sides of the semi-shells 100a and b have outwardly extending edges 130, which are disposed between the lifting unit 40 and the pressing unit.

[0029] The substrate 10 has multiple mounting holes 101.

[0030] Additionally, a locking member 201 is provided on the positioning unit 20. The locking member 201 is used to pass through the mounting hole 101. The positioning unit 20 includes a base plate 21. The locking member 201 is provided on the base plate 21. The locking member 201 can be a bolt structure. A positioning rod 22 is horizontally inserted on the base plate 21. The positioning rod 22 is threadedly engaged with the base plate 21. The positioning rod 22 abuts against the upper side 110 and the lower side 120. A nut can also be sleeved on the positioning rod 22. The nut is welded and fixed to the base plate 21. The horizontal displacement can be achieved by rotating the positioning rod 22.

[0031] Furthermore, the pressing unit 30 is capable of lifting and rotating movements. The pressing unit 30 is used to press against the semi-shells 100a and 100b. The pressing unit 30 includes a first connecting rod 31, a second connecting rod 32, and a pressing plate 33. The pressing plate 33 is sleeved on the first connecting rod 31 and the second connecting rod 32. The first connecting rod 31 and the second connecting rod 32 are arranged side-by-side and connected to the mounting hole 101, which can be a threaded connection. The pressing plate 33 presses against the upper end of the edge 130. A first adjusting member 311 is screwed onto the first connecting rod 31. The nut, the first adjusting member 311 is located below the pressure plate 33, and the second connecting rod 32 is screwed with a first locking body 321 like a nut. The first locking body 321 is located above the pressure plate 33. Thus, when the first locking body 321 is removed, the pressure plate 33 can be removed from the first connecting rod 31 and the second connecting rod 32, and then put on the first connecting rod 31 and rotated to the outside to avoid interfering with the insertion of the half shell. At the same time, it can prevent the pressure plate 33 from being lost. The height of the pressure plate 33 can be adjusted by rotating the first adjusting member 311.

[0032] Additionally, the lifting unit 40 is located below the pressing unit 30. The lifting unit 40 is height-adjustable and includes a third connecting rod 41. The third connecting rod 41 can be threaded into the mounting hole 101. A contact block 42 is provided at the upper end of the third connecting rod 41. The contact block 42 abuts against the lower end face of the extension edge 130. The height can be adjusted by rotating the third connecting rod 41. A nut can also be added to the base plate 10 for the third connecting rod 41 to be screwed in, thereby improving the stability of the rotation and connection of the third connecting rod 41.

[0033] Example 2

[0034] like Figure 4 The example shown is of the clamping of the half-shell 100b by this fixture. The structures of the two half-shells are slightly different, but they both have upper and lower sides and edge structures, so the positioning unit 20, the clamping unit 30 and the lifting unit 40 are used in the same way.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fixture for a gear box, the gear box comprising two half shells, characterized in that, The clamp can clamp any half-shell at a time, and the clamp includes: A substrate having multiple mounting holes; Multiple positioning units are detachably mounted on the substrate. Each positioning unit is equipped with a locking member for inserting into a mounting hole. The positioning unit is used to abut against the half-shell. Multiple clamping units are detachably mounted on the base plate. The clamping units are capable of lifting and lowering and are used to press against the half-shell. Multiple lifting units are detachably mounted on the base plate, the lifting units being located below the pressing unit, and the height of the lifting units being adjustable.

2. A fixture for a gear box as claimed in claim 1, wherein: The semi-shell has a flat upper side and a lower side, which abut against the positioning unit; the left side and right side of the semi-shell have outwardly extending edges, which are disposed between the lifting unit and the pressing unit.

3. A fixture for a gear box as claimed in claim 2, wherein: The positioning unit includes a base plate, on which a positioning rod is horizontally arranged. The positioning rod is threadedly connected to the base plate and abuts against the upper and lower sides.

4. A fixture for a gear box as claimed in claim 2, wherein: The clamping unit includes a first connecting rod, a second connecting rod, and a clamping plate. The clamping plate is sleeved on the first connecting rod and the second connecting rod. The first connecting rod and the second connecting rod are arranged side by side and connected to the mounting hole. The clamping plate is pressed against the upper end of the edge.

5. A fixture for a gear box as claimed in claim 4, wherein: A first adjusting component is screwed onto the first connecting rod, and the first adjusting component is located below the pressure plate. A first locking body is screwed onto the second connecting rod, and the first locking body is located above the pressure plate.

6. A clamp for a gearbox according to claim 2, characterized in that: The lifting unit includes a third connecting rod, which is screwed into a mounting hole. A contact block is provided at the upper end of the third connecting rod, and the contact block abuts against the edge.

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