Miniature cam opening mechanism

Abstract

The utility model relates to a miniature cam opening mechanism which comprises a containing pipe used for containing a clamp spring, the containing pipe comprises a fixed part and a movable part, and the top of the fixed part and the top of the movable part are each provided with a first containing groove. One ends of the two first placing grooves penetrate through the middle plane of the fixed part and the middle plane of the movable part respectively, and convex columns are arranged at the tops of the two first placing grooves; when the middle plane of the fixed part is attached to the middle plane of the movable part, the two first containing grooves jointly form a containing space, and a clamping spring is placed in the containing space. The two protruding columns are located in small holes in the clamping spring. The device further comprises a moving assembly, and the moving assembly changes the distance between the two protruding columns. The utility model relates to the technical field of hydraulic hoist equipment in water conservancy equipment. The device has the advantages that an operator can assemble or disassemble the clamp spring and the shaft conveniently, the working efficiency is improved, and meanwhile the damage rate of the clamp spring is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of a clamping spring and a shaft installation mechanism, in particular to a micro cam expansion mechanism. Background Art

[0002] In order to install the retaining ring in the groove on the shaft, the operator uses a vise to stretch the product and place it on the shaft. This not only increases the operator's physical labor and reduces the work efficiency of a single assembly, but also has the probability of enlarging and damaging the retaining ring. At the same time, when dragging and unloading the retaining ring, the above-mentioned problems still exist when relying on manual operation. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a miniature cam expansion mechanism, which is convenient for operators to assemble or disassemble the retaining spring and the shaft, thereby improving work efficiency and reducing the breakage rate of the retaining spring.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A micro cam expansion mechanism includes a placement tube for placing a retaining ring, the placement tube including a fixed portion and a movable portion, a first placement slot being formed at the top of each of the fixed portion and the movable portion, one end of each of the first placement slots respectively penetrating the midplane of the fixed portion and the midplane of the movable portion, and a protruding column being formed at the top of each of the first placement slots;

[0006] When the midplane of the fixed portion is aligned with the midplane of the movable portion, the two first placement grooves together form a placement space, and the retaining spring is placed in the placement space;

[0007] The two protrusions are both located in the small hole of the retaining spring;

[0008] The utility model further comprises a moving component, wherein the moving component changes the distance between the two protrusions.

[0009] In a preferred example, the present invention can be further configured as follows: the moving assembly includes a telescopic cylinder, a placement plate is provided on the top of the telescopic cylinder, two connecting rods are symmetrically fixedly provided on the placement plate, a base is fixedly provided on the top of the two connecting rods, a first through hole is opened on the top of the base, one end of the first through hole passes through the base, the fixing portion is fixedly provided on the base, and the inner hole of the fixing portion is connected to the first through hole;

[0010] The movable portion is slidably arranged in the first through hole, and the movable portion moves in a horizontal direction;

[0011] A fixing pin is symmetrically provided on the lower half of the outer side of the movable part, and a bearing is provided on the outer peripheral surface of the fixing pin;

[0012] A sliding block is provided on the two connecting rods for sliding movement, the bottom of the sliding block is connected to the telescopic end of the telescopic cylinder, and the sliding block extends symmetrically outward from the side of the fixed part to form two vertical plates, and the movable part is located between the two vertical plates;

[0013] A second through hole is formed on one side of each vertical plate. The second through hole is tilted. The bearing is located in the corresponding second through hole, and the bearing contacts the inner wall of the corresponding second through hole.

[0014] In a preferred embodiment, the present invention can be further configured as follows: two first sliding grooves are symmetrically formed on the inner wall of the first through hole, two moving blocks are symmetrically provided on the outer side of the movable portion, the moving blocks are located in the corresponding first sliding grooves, and the moving blocks are slidably connected to the corresponding first sliding grooves;

[0015] A stopper is provided on one side of the base, and the stopper covers an opening at one end of the first through hole.

[0016] In a preferred example, the present invention can be further configured as follows: the depth of the hole in the first placement groove is 1.2-1.3 times the thickness of the retaining spring.

[0017] In a preferred example, the present invention can be further configured as follows: the outer side of the movable portion is symmetrically processed to form two first limiting surfaces, and the first limiting surfaces are perpendicular to the midplane of the movable portion;

[0018] The midplane end of the fixing portion extends symmetrically outward to form two second limiting surfaces;

[0019] When the movable portion contacts the fixed portion, both of the two first limiting surfaces are in contact with the corresponding midplanes of the second limiting surfaces.

[0020] In a preferred example, the present invention can be further configured as follows: the retaining spring is placed in the placement space, and a movable space is left between the retaining spring and the inner wall of the placement space.

[0021] In summary, the present invention has at least one of the following beneficial technical effects:

[0022] 1. A placement tube consisting of a fixed part and a movable part is provided, and the circlip is placed in the placement space. The movable part is driven to move by the moving component, so that the convex columns on the fixed part and the movable part separate the circlip, which is convenient for operators to assemble or disassemble the circlip and the shaft, improves work efficiency, and reduces the breakage rate of the circlip.

[0023] 2. By limiting the dimensional relationship between the placement space height and the thickness of the retaining spring, the retaining spring is prevented from popping out of the placement tube when it is stretched.

[0024] 3. By providing a second limiting surface on the fixed part and a first limiting surface on the movable part, the movement direction of the movable part is further limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Is a schematic diagram of the overall structure of this embodiment;

[0026] Figure 2 yes Figure 1 A schematic diagram of the front structure with the fixed part and the movable part removed;

[0027] Figure 3 yes Figure 2 Schematic diagram of the rear view structure;

[0028] Figure 4 yes Figure 1 A in the middle is an enlarged structural diagram;

[0029] Figure 5 yes Figure 2 The enlarged structural diagram at B in the middle;

[0030] Figure 6 yes Figure 3 Enlarged structural diagram at point C in the middle.

[0031] In the figure, 1, fixed part; 11, movable part; 2, first placement groove; 21, boss; 3, placement space; 4, moving component; 41, telescopic cylinder; 42, placement plate; 43, connecting rod; 44, base; 45, first through hole; 46, bearing; 47, sliding block; 5, vertical plate; 51, second through hole; 6, first slide groove; 61, moving block; 7, stop block; 8, first limiting surface; 81, second limiting surface. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below with reference to the accompanying drawings.

[0033] Example:

[0034] Reference Figures 1-6 As shown, the present invention discloses a micro cam expansion mechanism, comprising a telescopic cylinder 41. In this embodiment, two micro cam expansion mechanisms are provided on the device. Both telescopic cylinders 41 are placed on a bracket.

[0035] A support plate 42 is fixed to the top of the telescopic cylinder 41. Two connecting rods 43 are symmetrically fixed to the support plate 42. A base 44 is fixed to the top of both connecting rods 43. A first through-hole 45 is defined at the top of the base 44, with one end of the first through-hole 45 extending through the base 44. A block 7 is installed on one side of the base 44, blocking one end of the opening of the first through-hole 45.

[0036] It also includes a placement tube for placing the retaining ring. The placement tube includes a fixed part 1 and a movable part 11. The fixed part 1 is fixedly arranged on the base 44, and the inner hole of the fixed part 1 is connected to the first through hole 45. The movable part 11 is slidably arranged in the first through hole 45, and the movable part 11 moves in the horizontal direction. The movable part 11 is located between the stop block 7 and the fixed part 1. Two first sliding grooves 6 are symmetrically provided on the inner wall of the first through hole 45, and two moving blocks 61 are symmetrically provided on the outer side of the movable part 11. The moving blocks 61 are located in the corresponding first sliding grooves 6, and the moving blocks 61 are slidably connected to the corresponding first sliding grooves 6.

[0037] A first placement slot 2 is defined at the top of both the fixed portion 1 and the movable portion 11. One end of each of the first placement slots 2 extends through the midplane of the fixed portion 1 and the midplane of the movable portion 11, respectively. A protrusion 21 is located at the top of each of the first placement slots 2. The height of the protrusion 21 is equal to the depth of the inner hole of the first placement slot 2.

[0038] When the midplane of the fixed portion 1 aligns with the midplane of the movable portion 11, the two first placement slots 2 together form a placement space 3, and the retaining spring is placed in the placement space 3. The two protrusions 21 are both located in the small hole in the retaining spring. The depth of the inner hole of the first placement slot 2 is 1.2-1.3 times the thickness of the retaining spring. In this embodiment, the depth of the inner hole of the first placement slot 2 is 1.2 times the thickness of the retaining spring. The retaining spring is placed in the placement space 3, and there is a movable space between the retaining spring and the inner wall of the placement space 3. The movable space meets the spatial requirements when the retaining spring is deformed.

[0039] To further restrict the motion path of the movable portion 11, two first limiting surfaces 8 are symmetrically machined on the outer side of the movable portion 11. These first limiting surfaces 8 are perpendicular to the midplane of the movable portion 11. Two second limiting surfaces 81 are symmetrically extended outward from the midplane end of the fixed portion 1. When the movable portion 11 is in contact with the fixed portion 1, both first limiting surfaces 8 align with the midplanes of the corresponding second limiting surfaces 81.

[0040] The mechanism further includes a moving assembly 4, which changes the distance between the two protruding columns 21. A fixing pin is symmetrically provided on the lower half of the outer side of the movable portion 11, and a bearing 46 is provided on the outer peripheral surface of the fixing pin.

[0041] A sliding block 47 is slidably provided on the two connecting rods 43, and the telescopic end of the telescopic cylinder 41 passes through the placement plate 42 and is connected to the sliding block 47. The telescopic cylinder 41 drives the sliding block 47 to move along the height direction of the telescopic cylinder 41.

[0042] The sliding block 47 extends symmetrically outwards from one side of the fixed portion 1 to form two vertical plates 5 , and the movable portion 11 is partially located between the two vertical plates 5 .

[0043] A second through hole 51 is formed on one side of each vertical plate 5 . The second through hole 51 is tilted. The bearing 46 is located in the corresponding second through hole 51 . The bearing 46 contacts the inner wall of the corresponding second through hole 51 .

[0044] When the bearing 46 contacts the uppermost end of the second through hole 51 , the fixed portion 1 contacts the movable portion 11 .

[0045] When the bearing 46 is located at the lowermost end of the corresponding second through hole 51 , the fixed portion 1 is out of contact with the movable portion 11 .

[0046] The implementation principle of the above embodiment is:

[0047] The telescopic cylinder 41 is powered by mains electricity and an air compressor outside the device, and the telescopic mechanism is controlled by a PLC controller outside the device.

[0048] Before operation, the fixed portion 1 is kept in contact with the movable portion 11. The operator places the retaining spring flat in the placement space 3 and ensures that both bosses 21 are located in the retaining spring holes.

[0049] The telescopic cylinder 41 is started by the PLC controller, and the telescopic cylinder 41 drives the sliding block 47 to move upward along the straight line direction of the connecting rod 43 itself. The sliding block 47 drives the two vertical plates 5 to move upward, and the two vertical plates 5 drive the corresponding second through holes 51 to move. As the second through holes 51 move, the second through holes 51 drive the corresponding bearings 46 to move.

[0050] The movable portion 11 is restricted by the moving block 61 and the first sliding groove 6 .

[0051] The bearing 46 can only move horizontally, driving the movable portion 11 to move within the first through hole 45, causing the movable portion 11 to break contact with the fixed portion 1. The movable portion 11 drives the corresponding protrusion 21 to move. As the distance between the two protrusions 21 increases, both protrusions 21 come into contact with the retaining spring, opening the retaining spring.

[0052] The telescopic cylinder 41 remains in its current state, and the external robot places the shaft in the fixed tube. After the shaft passes through the hole between the retaining spring, the movable part 11 and the fixed part 1 and reaches the appropriate position.

[0053] The PLC controller again controls the movement of telescopic cylinder 41, which drives slide block 47 back to its initial position. Simultaneously, under the action of vertical plate 5, movable portion 11 and the retaining spring return to their initial positions. The retaining spring is now secured to the shaft, and the shaft is no longer in contact with movable portion 11 or fixed portion 1. Finally, an external robotic arm, under the control of the PLC controller, removes the shaft.

[0054] The same is true for the disassembly of the circlip, where the axle on which the circlip is housed is placed on the fixed pipe, and two bosses 21 are all positioned in the circlip eyelet. After the circlip is opened, the axle is taken out.

[0055] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A micro cam expansion mechanism, characterized in that: The invention comprises a placement tube for placing a retaining spring, the placement tube comprising a fixed portion (11) and a movable portion (12), the top of the fixed portion (11) and the top of the movable portion (12) are both provided with a first placement groove (2), one end of each of the two first placement grooves (2) respectively passes through the midplane of the fixed portion (11) and the midplane of the movable portion (12), and the top of each of the two first placement grooves (2) is provided with a convex column (21); When the midplane of the fixed portion (11) and the midplane of the movable portion (12) are aligned, the two first placement grooves (2) together form a placement space (3), and the retaining spring is placed in the placement space (3); The two protrusions (21) are both located in the small hole of the retaining spring; It also includes a moving component (4), which changes the distance between the two bosses (21).

2. The micro cam expansion mechanism according to claim 1, characterized in that: The moving assembly (4) includes a telescopic cylinder (41), a placement plate (42) is provided on the top of the telescopic cylinder (41), two connecting rods (43) are symmetrically fixedly provided on the placement plate (42), a base (44) is fixedly provided on the top of the two connecting rods (43), a first through hole (45) is provided on the top of the base (44), one end of the first through hole (45) passes through the base (44), the fixing portion (11) is fixedly provided on the base (44), and the inner hole of the fixing portion (11) is connected to the first through hole (45); The movable portion (12) is slidably disposed in the first through hole (45), and the movable portion (12) moves in a horizontal direction; A fixing pin is symmetrically provided on the lower half of the outer side of the movable portion (12), and a bearing (46) is provided on the outer peripheral surface of the fixing pin; A sliding block (47) is provided on the two connecting rods (43) for sliding movement. The bottom of the sliding block (47) is connected to the telescopic end of the telescopic cylinder (41). The sliding block (47) extends symmetrically outwards from one side of the fixed portion (11) to form two vertical plates (5). The movable portion (12) is partially located between the two vertical plates (5). A second through hole (51) is provided on one side of each vertical plate (5), the second through hole (51) is arranged at an angle, the bearing (46) is located in the corresponding second through hole (51), and the bearing (46) contacts the inner wall of the corresponding second through hole (51).

3. The micro cam expansion mechanism according to claim 2, characterized in that: Two first sliding grooves (6) are symmetrically provided on the inner wall of the first through hole (45), and two motion blocks (61) are symmetrically provided on the outer side of the movable portion (12), wherein the motion blocks (61) are located in the corresponding first sliding grooves (6), and the motion blocks (61) are slidably connected to the corresponding first sliding grooves (6); A stopper (7) is provided on one side of the base (44), and the stopper (7) covers an opening at one end of the first through hole (45).

4. The micro cam expansion mechanism according to claim 1, characterized in that: The inner hole depth of the first placement groove (2) is 1.2-1.3 times the thickness of the retaining spring.

5. The micro cam expansion mechanism according to claim 4, characterized in that: The outer side of the movable portion (12) is symmetrically processed to form two first limiting surfaces (8), and the first limiting surfaces (8) are perpendicular to the midplane of the movable portion (12); The plane end of the fixing portion (11) extends symmetrically outward to form two second limiting surfaces (81); When the movable portion (12) contacts the fixed portion (11), both of the first limiting surfaces (8) fit in with the corresponding midplane of the second limiting surface (81).

6. The micro cam expansion mechanism according to claim 5, characterized in that: The retaining spring is placed in the placement space (3), and a movable space is left between the retaining spring and the inner wall of the placement space (3).

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