Crankshaft clamping jaw

Abstract

The crankshaft clamping jaw comprises an upper support, clamping arms are rotationally arranged in grooves in the lower sides of the two ends of the upper support through connecting shafts, clamping plates are arranged on the inner sides of the lower ends of the two clamping arms, one ends of the two clamping arms are in transmission connection with a first air cylinder through a gear rack set, and first sliding grooves are formed in the outer sides of the clamping plates. A first sliding groove is formed in the outer side of the clamping plate, two positioning clamping jaws are arranged in the first sliding groove in an opposite sliding mode through a second air cylinder, detachable clamping blocks are arranged on the inner sides of the positioning clamping jaws, and side face clamping pads are arranged on the side walls of the clamping blocks. And the second air cylinder drives the two positioning clamping jaws to move and adjust, so that the transverse position of the positioning clamping jaws clamped and fixed outside the crankshaft can be adjusted, and the requirement for clamping and fixing the two sides of crankshafts of different positions or sizes is met.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft positioning equipment, in particular to a crankshaft clamp. Background Art

[0002] The crankshaft is a major rotating component on the engine. After the connecting rod is installed, it can convert the up and down (reciprocating) motion of the connecting rod into a circular (rotating) motion. The crankshaft has two important parts: the main journal and the connecting rod journal. When clamping the crankshaft, due to the long length of the crankshaft and the eccentric setting of the connecting rod journal relative to the main journal, if only a single clamp is used to clamp the main journal, the force on the crankshaft is only on one clamping point. During transportation, the crankshaft is prone to shaking or rotating relative to the eccentric clamp with the clamping point as the axis, which can easily cause collision damage to the crankshaft. Therefore, when clamping the crankshaft, multiple support points need to be set to limit the crankshaft; and, during rough machining and fine machining, the external dimensions of the crankshaft are different. When limiting the crankshaft, the changes in the external dimensions of the crankshaft must also be taken into account.

[0003] The prior art discloses a crankshaft clamping tool with application number 202223221882.3, which includes: a clamping drive source; a clamping jaw assembly, including two crankshaft clamps, the crankshaft clamps being connected to the clamping drive source, the two crankshaft clamps being driven by the clamping drive source to move toward or in opposite directions, respectively achieving the clamping and releasing actions of the crankshaft; a limiting assembly, including at least one set of two limiting clamps arranged on the sides of the two crankshaft clamps, the crankshaft clamps being clamped at the main journal position of the crankshaft, and the limiting clamps being abutted at the position of the connecting rod neck of the crankshaft, achieving limited support for the crankshaft. This utility model can not only clamp the main journal of the crankshaft, but also support and limit the connecting rod neck of the crankshaft, preventing the crankshaft from shaking or rotating during transportation, thereby avoiding damage to the crankshaft. However, the lateral position of the clamps fixed on the outside of the crankshaft cannot be adjusted to meet the clamping and fixing processing of crankshafts of different positions or sizes on both sides, and the stability of the clamping and fixing is relatively general. Utility Model Content

[0004] The purpose of the utility model is to provide a crankshaft clamp to solve the problem in the prior art that the lateral position of the clamp cannot be adjusted to fix it on the outside of the crankshaft, thereby meeting the clamping and fixing processing on both sides of the crankshaft of different positions or sizes, and the stability of the clamping and fixing is relatively general.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crankshaft clamp, comprising an upper support, clamping arms are provided in the grooves on the lower sides of both ends of the upper support for rotation through a connecting shaft, and a clamping plate is provided on the inner sides of the lower ends of the two clamping arms, one end of the two clamping arms is connected to a first cylinder through a gear rack set, a first sliding groove is provided on the outer side of the clamping plate, and two positioning clamping jaws are provided in the first sliding groove for sliding toward each other through a second cylinder, a detachable clamping block is provided on the inner side of the positioning clamping jaw, and a side clamping pad is provided on the side wall of the clamping block.

[0006] Furthermore, the clamping block is fixed to one side of the positioning clamping claw by means of bolts, and a clamping groove is provided on the inner side of the clamping block.

[0007] Furthermore, the clamping groove is an arc-shaped groove, and an anti-slip pad is provided on the inner wall of the clamping groove.

[0008] Furthermore, the second cylinder is a double-headed cylinder, and the second cylinder is fixedly arranged in the middle of the first sliding groove.

[0009] Furthermore, a second sliding groove is provided on the inner wall of the first sliding groove, and one end of the positioning clamp is slidably arranged with the second sliding groove through a limiting slider.

[0010] Furthermore, the limiting slider is a T-shaped slider, and two groups of limiting sliders are provided in parallel.

[0011] Furthermore, the gear rack assembly includes a driven gear arranged on the outside of one end of the clamping arm, and an active rack is provided at one end of the first cylinder, and both sides of the active rack are respectively engaged with two driven gears.

[0012] Furthermore, a flip adjustment mechanism is provided on the upper inner part of the upper support, and the flip adjustment mechanism includes a connecting seat and a connecting plate arranged inside the upper support, a flip shaft is fixed on both sides of the connecting plate, and both ends of the flip shaft are rotatably connected to the connecting seat, and one end of the flip shaft is transmission-connected to a motor, and the motor is fixed on the outer wall of the connecting seat.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present invention, two positioning jaws are provided in the first sliding groove on the outer side of the splint and slide toward each other through the second cylinder, and a clamping block is provided on the inner side of the positioning jaws. The two positioning jaws are driven by the second cylinder to move and adjust, so that the lateral position of the positioning jaws fixed on the outside of the crankshaft can be adjusted, thereby meeting the clamping and fixing processing requirements of the two sides of the crankshaft of different positions or sizes.

[0015] 2. The utility model provides side clamping pads on the side walls of the clamping block, and the side clamping pads are rubber convex pads, so that when the clamping block is driven by the second cylinder to move laterally and clamp and fix, the side clamping pads can be pressed and fixed on the outer side wall of the crank or the balance weight, which is beneficial to improving the stability of the crankshaft clamping and fixation.

[0016] 3. The utility model provides a second slide groove through the inner wall of the first slide groove, and one end of the positioning jaw is slidably arranged with the second slide groove through a limit slider. The limit slider is a T-shaped slider, and two groups of limit sliders are provided in parallel, which are used to slide and limit the positioning jaw when moving and adjusting, which is beneficial to improving the stability of the positioning jaw's movement and adjustment and the stability of clamping and fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the rack and pinion assembly and the first cylinder of the utility model;

[0020] Figure 3 This is a schematic diagram of the plywood structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the positioning clamp structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the crankshaft clamping structure of the present utility model.

[0023] In the figure: 1. Upper support; 2. Groove; 3. Connecting shaft; 4. Clamping arm; 5. Clamping plate; 6. Second cylinder; 7. Positioning clamping claw; 8. Clamping block; 9. Clamping groove; 10. Bolt; 11. Side clamping pad; 12. First slide groove; 13. Second slide groove; 14. Limiting slider; 15. Driven gear; 16. Active rack; 17. First cylinder; 18. Connecting plate; 19. Turning shaft; 20. Motor; 21. Connecting seat. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5In the embodiment of the present utility model, a crankshaft clamp comprises an upper support 1, a clamping arm 4 is rotatably provided in the groove 2 on the lower side of both ends of the upper support 1 through a connecting shaft 3, and a clamping plate 5 is provided on the inner side of the lower end of the two clamping arms 4, one end of the two clamping arms 4 is connected to the first cylinder 17 through a gear rack set, the gear rack set includes a driven gear 15 arranged on the outer side of one end of the clamping arm 4, an active rack 16 is provided at one end of the first cylinder 17, and the two sides of the active rack 16 are respectively meshed with the two driven gears 15, a first slide groove 12 is opened on the outer side of the clamping plate 5, and two positioning clamping jaws 7 are provided in the first slide groove 12 to slide toward each other through the second cylinder 6, the second cylinder 6 is a double-headed cylinder, and the second The cylinder 6 is fixedly arranged in the middle of the first slide groove 12, and a detachable clamping block 8 is provided on the inner side of the positioning clamping jaw 7, so that the two positioning clamping jaws 7 are driven to move and adjust by the second cylinder 6, so that the lateral position of the positioning clamping jaw 7 fixed on the outside of the crankshaft can be adjusted, thereby meeting the clamping and fixing processing of the two sides of the crankshaft of different positions or sizes. The clamping block 8 is fixed to one side of the positioning clamping jaw 7 by a bolt 10, which is convenient for disassembly and assembly of the clamping block 8 to replace different models for clamping and fixing, and a clamping groove 9 is provided on the inner side of the clamping block 8. The clamping groove 9 is an arc-shaped groove, and the inner wall of the clamping groove 9 is provided with an anti-slip pad, which increases the anti-slip property of the inner side of the clamping groove 9, which is beneficial to improve the stability of the clamping groove 9 clamped on the outside of the crankshaft center axis.

[0026] like Figure 1 、 Figure 3 and Figure 4 As shown, in order to improve the stability of the crankshaft clamping and fixing, the side wall of the clamping block 8 is provided with a side clamping pad 11, and the side clamping pad 11 is a rubber convex pad, so that when the clamping block 8 is driven by the second cylinder 6 to move laterally to clamp and fix, the side clamping pad 11 can be pressed and fixed on the outer wall of the crank or the balance weight, which is beneficial to improve the stability of the crankshaft clamping and fixing.

[0027] like Figure 1 、 Figure 3 and Figure 4 As shown, in order to improve the stability of the movement and adjustment of the positioning jaw 7, a second slide groove 13 is provided on the inner wall of the first slide groove 12, and one end of the positioning jaw 7 is slidably set with the second slide groove 13 through a limiting slider 14. The limiting slider 14 is a T-shaped slider, and two groups of limiting sliders 14 are provided in parallel, which are used to slide and limit the positioning jaw 7 when it is moved and adjusted, which is beneficial to improving the stability of the movement and adjustment of the positioning jaw 7 and the stability of clamping and fixing.

[0028] like Figure 1 and Figure 5In order to flip and adjust the positioning clamp 7, a flip adjustment mechanism is also provided on the upper inner part of the upper support 1, and the flip adjustment mechanism includes a connecting seat 21 and a connecting plate 18 arranged inside the upper support 1. Flip shafts 19 are fixed on both sides of the connecting plate 18, and both ends of the flip shaft 19 are rotatably connected to the connecting seat 21. One end of the flip shaft 19 is transmission-connected to a motor 20, and the motor 20 is fixedly arranged on the outer wall of the connecting seat 21, so that the flip shaft 19 and the connecting plate 18 are driven by the motor 20 to flip and adjust, thereby enabling the positioning clamp 7 to be flip-adjusted, and the flip adjustment angle is 0-90°.

[0029] The working principle and usage process of the utility model are as follows: when in use, the two groups of clamping arms 4 and the positioning clamping claws 7 are driven by the first cylinder 17 and the gear rack group to flip and adjust and press them on the outside of the central axis of the crankshaft for clamping and fixing, and two positioning clamping claws 7 are provided in the first slide groove 12 on the outside of the splint 5 to slide toward each other through the second cylinder 6, and a clamping block 8 is provided on the inside of the positioning clamping claw 7, so that the two positioning clamping claws 7 are driven to move and adjust by the second cylinder 6, so that the lateral position of the positioning clamping claws 7 fixed on the outside of the crankshaft can be adjusted, thereby meeting the clamping and fixing processing of the two sides of the crankshaft of different positions or sizes.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A crankshaft clamp, comprising an upper support (1), characterized in that: A clamping arm (4) is rotatably provided in the groove (2) at the lower side of both ends of the upper support (1) via a connecting shaft (3), and a clamping plate (5) is provided on the inner side of the lower end of the two clamping arms (4). One end of the two clamping arms (4) is connected to a first cylinder (17) via a gear rack set. A first sliding groove (12) is provided on the outer side of the clamping plate (5), and two positioning clamping claws (7) are provided in the first sliding groove (12) so as to slide toward each other via a second cylinder (6). A detachable clamping block (8) is provided on the inner side of the positioning clamping claw (7), and a side clamping pad (11) is provided on the side wall of the clamping block (8).

2. The crankshaft clamp according to claim 1, characterized in that: The clamping block (8) is fixed to one side of the positioning clamping claw (7) by means of a bolt (10), and a clamping groove (9) is provided on the inner side of the clamping block (8).

3. The crankshaft clamp according to claim 2, characterized in that: The clamping groove (9) is an arc-shaped groove, and an anti-slip pad is provided on the inner wall of the clamping groove (9).

4. The crankshaft clamp according to claim 1, characterized in that: The second cylinder (6) is a double-headed cylinder, and the second cylinder (6) is fixedly arranged in the middle of the first sliding groove (12).

5. The crankshaft clamp according to claim 4, characterized in that: A second sliding groove (13) is provided on the inner wall of the first sliding groove (12), and one end of the positioning clamping claw (7) is slidably arranged with the second sliding groove (13) via a limiting slider (14).

6. The crankshaft clamp according to claim 5, characterized in that: The limiting sliders (14) are T-shaped sliders, and two groups of limiting sliders (14) are arranged in parallel.

7. The crankshaft clamp according to claim 1, characterized in that: The gear rack assembly includes a driven gear (15) arranged outside one end of the clamping arm (4); an active rack (16) is provided at one end of the first cylinder (17), and both sides of the active rack (16) are respectively meshed and connected with the two driven gears (15).

8. The crankshaft clamp according to claim 1, characterized in that: The upper portion of the upper support (1) is also provided with a flip adjustment mechanism, the flip adjustment mechanism comprising a connecting seat (21) and a connecting plate (18) arranged inside the upper support (1), a flip shaft (19) being fixedly provided on both sides of the connecting plate (18), and both ends of the flip shaft (19) being rotatably connected to the connecting seat (21), and one end of the flip shaft (19) being transmission-connected to a motor (20).

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