Connecting rod assembly transition paw

Abstract

The utility model provides a transition claw of a connecting rod assembly. The transition claw comprises a mounting plate; the positioning assembly comprises a positioning pin, and the positioning pin is arranged on the mounting plate and used for being inserted into a mounting hole in the small end of the connecting rod; the gripper assemblies are arranged on one side of the positioning pin at intervals, are arranged on the mounting plate and are used for clamping or loosening the crank pin; the distance between the center shaft of the paw assembly and the center shaft of the positioning pin in the horizontal direction is different from the distance between the center shaft of the large end of the connecting rod and the center shaft of the small end of the connecting rod in the horizontal direction. The clamping device can ensure that the connecting rod assembly is clamped and positioned stably.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hand claw technical field, especially relates to a connecting rod assembly transition hand claw. BACKGROUND

[0002] Before the crank pin press fitting process of the assembled type crankshaft spare and accessory, the assembly of the connecting rod assembly needs to be completed, that is, the connecting rod, the crank pin and the needle bearing are assembled together, and then the connecting rod assembly is put into the crank pin press-in machine. The connecting rod assembly is assembled by the connecting rod, the crank pin and the needle bearing through clearance fit, has activity, and is easy to scatter in the carrying process. At present, the carrying of the connecting rod assembly is generally manual, and the assembled connecting rod assembly is carried by manual taking and putting again and then put into the crank pin press-in machine. However, since the connecting rod assembly is a movable component, manual taking and putting need to be careful to prevent the scattering and falling, and therefore the manual carrying efficiency is low, and the angle requirement of the connecting rod assembly feeding makes the manual feeding positioning more difficult. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a connecting rod assembly transition hand claw, which can ensure the stable clamping and positioning of the connecting rod assembly.

[0004] The utility model is implemented by the following technical scheme:

[0005] A connecting rod assembly transition hand claw comprises:

[0006] A mounting plate;

[0007] A positioning assembly, which comprises a positioning pin arranged on the mounting plate and used for being inserted into a connecting rod small-end mounting hole;

[0008] A hand claw assembly, which is arranged on the mounting plate at the side of the positioning pin and is used for clamping or loosening the crank pin;

[0009] The distance between the central axis of the hand claw assembly and the central axis of the positioning pin in the horizontal direction is different from the distance between the central axis of the connecting rod big end and the central axis of the connecting rod small end in the horizontal direction.

[0010] Further, the hand claw assembly comprises a three-fingered cylinder and three clamping blocks, and the three clamping blocks are arranged on the three fingers of the three-fingered cylinder respectively.

[0011] Further, the clamping block is in a U shape, one end of the U-shaped clamping block is connected with the finger of the three-fingered cylinder, and the other end of the U-shaped clamping block extends downward and is provided with an arc-shaped clamping block.

[0012] Further, the positioning assembly comprises a supporting column and a pressing strip, the top end of the supporting column is arranged on the mounting plate, the bottom end of the supporting column is connected with one end of the pressing strip, the other end of the pressing strip is located below the hand claw assembly, and two protruding blocks for limiting the height of the needle bearing relative to the connecting rod are arranged at intervals below the hand claw assembly.

[0013] Further, the positioning assembly further comprises a pin seat, the top end of the positioning pin is detachably arranged on the pin seat, and the top end of the supporting column is detachably arranged on the pin seat.

[0014] Further, the bottom end of the positioning pin is provided with a spherical positioning block.

[0015] Further, the number of the positioning pins is multiple, the diameters of the positioning blocks at the bottom ends of the multiple positioning pins are different, and each positioning pin is selectively arranged on the pin seat.

[0016] The number of the supporting columns is multiple, the lengths of the multiple supporting columns are different, and each supporting column is selectively arranged on the pin seat; the number of the pressing strips is multiple, the lengths of the multiple pressing strips are different or the interval distances of the two protrusions on the multiple pressing strips are different, and each pressing strip is selectively arranged on the supporting column.

[0017] The number of the positioning assemblies is multiple, the positions of the positioning pins arranged on the pin seats in the multiple positioning assemblies are different, and each positioning assembly is selectively arranged on the mounting plate.

[0018] Further, the top end of the mounting plate is provided with a flange.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: when the positioning pin is inserted into the small-end mounting hole of the connecting rod, the small-end mounting hole of the connecting rod is limited by the positioning pin, then the jaw assembly clamps the crank pin, because the distance between the central shaft of the jaw assembly and the central shaft of the positioning pin in the horizontal direction and the distance between the central shaft of the large end of the connecting rod and the central shaft of the small end of the connecting rod in the horizontal direction are different, when the jaw assembly clamps the crank pin, the jaw assembly drives the crank pin to tightly press the needle bearing, and makes the needle bearing tightly press the large end of the connecting rod, so that the small end of the connecting rod and the large end of the connecting rod are clamped by being limited by the positioning pin and the crank pin with the needle bearing respectively, the needle bearing is clamped by the action of the crank pin and the connecting rod, the clamping and carrying of the connecting rod assembly are guaranteed not to be scattered, and the cooperation of the positioning pin and the jaw assembly guarantees the feeding angle of the connecting rod assembly, the jaw assembly clamping the crank pin guarantees the surface quality of the crank pin and the angle of the crank pin relative to the crankshaft. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the transition jaw of the connecting rod assembly of the utility model;

[0021] Figure 2 It is a front view of the transition jaw of the connecting rod assembly of the utility model;

[0022] Figure 3 It is a bottom view of the transition jaw of the connecting rod assembly of the utility model;

[0023] Figure 4The utility model discloses a transition hand claw of connecting rod assembly is the schematic diagram of grabbing connecting rod assembly.

[0024] Figure 5 The utility model discloses a transition hand claw of connecting rod assembly is the front view of grabbing connecting rod assembly.

[0025] Figure 6 It is the structural schematic diagram of connecting rod assembly.

[0026] Figure 7 It is the assembly positioning schematic diagram of connecting rod assembly.

[0027] In the drawing, 1 is mounting plate, 2 is positioning assembly, 21 is positioning pin, 22 is support column, 23 is pressing strip, 24 is protruding block, 25 is pin seat, 26 is positioning block, 3 is hand claw assembly, 31 is three-fingered cylinder, 32 is clamping block, 33 is arc clamping block, 4 is flange, 5 is connecting rod assembly, 51 is crank pin, 52 is needle roller bearing, 53 is connecting rod, 531 is small end, 532 is big end, 533 is small end mounting hole. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the following will combine the drawing in the utility model embodiment, and the technical scheme in the utility model embodiment is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The components of the utility model embodiment described and shown in the drawing here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiment of the utility model provided in the drawing is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the utility model protection.

[0030] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Meanwhile, in the description of the utility model, the terms "first", "second" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0031] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0032] In the description of the utility model, it is to be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0033] Please refer to Figure 1 , Figure 6 and Figure 7 , Figure 1 It is the structure schematic drawing of the utility model link assembly transition hand claw, Figure 6 It is the structure schematic drawing of the link assembly, Figure 7 It is the assembly positioning schematic drawing of the link assembly. A link assembly transition hand claw is used for clamping a link assembly 5, the link assembly 5 includes a link 53, a crank pin 51 and a needle bearing 52, both ends of the link 53 are provided with a small end 531 and a large end 532, a small end mounting hole 533 is formed in the small end 531, a large end 532 mounting hole is formed in the large end 532, the crank pin 51 is arranged in the large end 532 mounting hole, and the needle bearing 52 is arranged in the large end 532 mounting hole and is sleeved on the crank pin 51.

[0034] Please refer to Figures 2 to 5 , Figure 2 It is the front view of the utility model link assembly transition hand claw, Figure 3 It is the bottom view of the utility model link assembly transition hand claw, Figure 4 It is the schematic diagram of the utility model link assembly transition hand claw grabbing the link assembly, Figure 5The utility model discloses a connecting rod assembly transition hand claw, which comprises a mounting plate 1, a positioning assembly 2 and a hand claw assembly 3.

[0035] When the hand claw assembly 3 clamps the crank pin 51, the crank pin 51 is driven to deviate from the center axis of the large end 532 of the connecting rod 53, so that the crank pin 51 tightly presses the needle bearing 52, and the needle bearing 52 tightly presses the large end 532 of the connecting rod 53, so that the small end 531 of the connecting rod 53 and the large end 532 of the connecting rod 53 are clamped by the connecting rod assembly transition hand claw, and the needle bearing 52 is clamped by the crank pin 51 and the connecting rod 53, thereby ensuring that the connecting rod assembly 5 does not fall off when the connecting rod assembly transition hand claw grabs and carries the connecting rod assembly 5, and the cooperation of the positioning pin 21 and the hand claw assembly 3 ensures the feeding angle of the connecting rod assembly 5.

[0036] When the hand claw assembly 3 clamps the crank pin 51, the crank pin 51 is driven to deviate from the center axis of the large end 532 of the connecting rod 53, so that the crank pin 51 tightly presses the needle bearing 52, and the needle bearing 52 tightly presses the large end 532 of the connecting rod 53, so that the small end 531 of the connecting rod 53 and the large end 532 of the connecting rod 53 are clamped by the connecting rod assembly transition hand claw, and the needle bearing 52 is clamped by the crank pin 51 and the connecting rod 53, thereby ensuring that the connecting rod assembly 5 does not fall off when the connecting rod assembly transition hand claw grabs and carries the connecting rod assembly 5, and the cooperation of the positioning pin 21 and the hand claw assembly 3 ensures the feeding angle of the connecting rod assembly 5.

[0037] In an embodiment, the gripper assembly 3 comprises a three-fingered cylinder 31 and three clamping blocks 32, which are respectively arranged on the three fingers of the three-fingered cylinder 31. The three-fingered cylinder 31 drives the three clamping blocks 32 to move close to or away from each other, so as to clamp or release the crank pin 51 through the three clamping blocks 32, and the clamping of the crank pin 51 can be ensured to be stable.

[0038] In an embodiment, the clamping block 32 is in a U shape, one end of the U-shaped clamping block 32 is connected with the finger of the three-fingered cylinder 31, and the other end of the U-shaped clamping block 32 extends downward and is provided with an arc-shaped clamping block 33. The clamping block 32 clamps the crank pin 51 through the arc-shaped clamping block 33, and since the arc-shaped clamping block 33 is in a circular arc shape, it can be compatible with the grasping of crank pins 51 of multiple sizes.

[0039] The roller pin bearing 52 of the connecting rod assembly 5 is in line with the inner hole of the large end 532 of the connecting rod 53, and the height of the crank pin 51 is higher than that of the roller pin bearing 52 and the inner hole of the large end 532 of the connecting rod 53. Figure 7 In the positioning scheme of the connecting rod assembly shown in the figure, the highest points of the crank pin 51, the roller pin bearing 52 and the connecting rod 53 of the completed connecting rod assembly 5 are different in height. In order to realize the confirmation of the position of the roller pin bearing 52, in an embodiment, the positioning assembly 2 further comprises a support column 22 and a pressing strip 23. The top end of the support column 22 is arranged on the mounting plate 1, the bottom end of the support column 22 is connected with one end of the pressing strip 23, the other end of the pressing strip 23 is located below the gripper assembly 3, and two protrusions 24 for limiting the height of the roller pin bearing 52 are arranged at intervals. One of the two protrusions 24 is flush with one end of the pressing strip 23, and the pressing strip 23 and the two protrusions 24 enclose a space for accommodating the crank pin 51. When the connecting rod assembly of the utility model is gripped by the gripper assembly, the two protrusions 24 are respectively connected with the top end of the roller pin bearing 52, the height of the roller pin bearing 52 relative to the connecting rod 23 is limited, and the highest points of the crank pin 51, the roller pin bearing 52 and the connecting rod 53 of the completed connecting rod assembly 5 are different in height.

[0040] In an embodiment, the positioning assembly 2 further comprises a pin seat 25, the top end of the positioning pin 21 is detachably arranged on the pin seat 25, the top end of the support column 22 is detachably arranged on the pin seat 25, and the pin seat 25 is detachably arranged on the mounting plate 1. This arrangement facilitates the installation and disassembly of the positioning assembly 2. In an embodiment, the bottom end of the positioning pin 21 is provided with a spherical positioning block 26. The positioning pin 21 is inserted into the small end mounting hole 533 of the connecting rod 53 through the positioning block 26. Since the positioning block 26 is spherical, it can avoid damaging the small end 531 of the connecting rod 53 when inserted. The diameter of the positioning block 26 is arranged according to the size of the small end mounting hole 533 of the connecting rod 53.

[0041] Since the connecting rod assembly 5 has multiple models, the specifications of the connecting rod assembly 5 of each model are different, so that the connecting rod assembly transition gripper of the utility model can adapt to different specifications, in an embodiment, the number of the positioning pins 21 is multiple, the diameters of the positioning blocks 26 at the bottom ends of the multiple positioning pins 21 are different, and each positioning pin is selectively arranged on the pin seat; the number of the support columns is multiple, the lengths of the multiple support columns are different, and each support column is selectively arranged on the pin seat; the number of the pressing strips is multiple, the lengths of the multiple pressing strips are different or the interval distances of the two protrusions on the multiple pressing strips are different, and each pressing strip is selectively arranged on the support column; the number of the positioning assemblies is multiple, the installation positions of the positioning pins on the multiple pin seats are different, and each positioning assembly is selectively arranged on the mounting plate. Since the installation positions of the positioning pins 21 on the pin seats 25 are different, the distances between the central axes of the positioning pins 21 on the different pin seats 25 and the central axis of the gripper assembly 3 in the horizontal direction are different, so that in actual use, the appropriate pin seat 25 can be selected according to the length of the connecting rod in the connecting rod assembly 5, so that the distance between the central axis of the gripper assembly 3 and the central axis of the positioning pin 2 in the horizontal direction meets the requirements, then the positioning pin 21 with the appropriate diameter of the bottom spherical positioning block 26 is selected according to the diameter of the small end mounting hole 533 of the connecting rod 53, and finally the support column 22 with the appropriate length and the pressing strip 23 are selected according to the height of the large end 532 of the connecting rod 53 and the diameter of the crank pin 51, then the distance between the two protrusions 24 on the pressing strip 23 is selected to be able to be sleeved outside the crank pin 51 but not to touch the crank pin 51 and to press on the needle bearing 52, so as to limit the needle bearing 52, thereby completing the assembly of the positioning assembly 2. In subsequent use, the positioning assembly 2 is adjusted according to the above process, so that the connecting rod assembly transition gripper of the utility model can grasp connecting rod assemblies 5 of different specifications.

[0042] In an embodiment, the top end of the mounting plate 1 is provided with a flange 4. The flange 4 is used for detachable connection with the corresponding mechanical hand, so as to facilitate the installation and disassembly of the connecting rod assembly transition gripper of the utility model on the mechanical hand.

[0043] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, so any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model, which does not deviate from the technical scheme of the utility model, still belongs to the scope of the technical scheme of the utility model.

Claims

1. A link assembly transition jaw characterized by, The utility model relates to a connecting rod installation device, including: A mounting plate; A positioning assembly, the positioning assembly includes positioning pins, the positioning pins are arranged on the mounting plate and are used for inserting connecting rod small end mounting holes; A hand claw assembly, the hand claw assembly is arranged on one side of the positioning pin and is arranged on the mounting plate and is used for clamping or loosening crank pins; The distance between the central axis of the hand claw assembly and the central axis of the positioning pin in the horizontal direction is different from the distance between the central axis of the connecting rod big end and the central axis of the connecting rod small end in the horizontal direction.

2. The link assembly transition jaw of claim 1, wherein, The hand claw assembly includes a three-fingered cylinder and three clamping blocks, and the three clamping blocks are arranged on the three fingers of the three-fingered cylinder respectively.

3. The link assembly transition jaw of claim 2, wherein, The clamping block is U-shaped, one end of the U-shaped clamping block is connected with the finger of the three-fingered cylinder, and the other end of the U-shaped clamping block extends downward and is provided with an arc-shaped clamping block.

4. The link assembly transition jaw of claim 1, wherein, The positioning assembly includes support columns and a pressing strip, the top end of the support column is arranged on the mounting plate, the bottom end of the support column is connected with one end of the pressing strip, the other end of the pressing strip is located below the hand claw assembly, and two protrusions for limiting the height of the needle roller bearing relative to the connecting rod are arranged at intervals.

5. The link assembly transition jaw of claim 4, wherein, The positioning assembly further includes a pin seat, the top end of the positioning pin is detachably arranged on the pin seat, the top end of the support column is detachably arranged on the pin seat, and the pin seat is detachably arranged on the mounting plate.

6. The link assembly transition jaw of claim 5, wherein, The bottom end of the positioning pin is provided with a spherical positioning block.

7. The link assembly transition jaw of claim 6, wherein, The number of the positioning pins is multiple, the diameters of the positioning blocks at the bottom ends of the multiple positioning pins are different, and each positioning pin is selectively arranged on the pin seat; The number of the support columns is multiple, the lengths of the multiple support columns are different, and each support column is selectively arranged on the pin seat; the number of the pressing strips is multiple, the lengths of the multiple pressing strips are different or the interval distances of the two protrusions on the multiple pressing strips are different, and each pressing strip is selectively arranged on the support column; The number of the positioning assemblies is multiple, the positions of the positioning pins in the multiple positioning assemblies are different, and each positioning assembly is selectively arranged on the mounting plate.

8. The link assembly transition jaw of claim 1, wherein, The top end of the mounting plate is provided with a flange.

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