CN211285740U - Quick connector for excavator - Google Patents
Quick connector for excavator Download PDFInfo
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- CN211285740U CN211285740U CN201921796501.XU CN201921796501U CN211285740U CN 211285740 U CN211285740 U CN 211285740U CN 201921796501 U CN201921796501 U CN 201921796501U CN 211285740 U CN211285740 U CN 211285740U
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- quick connector
- grapple
- linkage block
- oil cylinder
- hinged
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Abstract
The utility model relates to a quick connector for an excavator, which comprises a quick connector main body formed by connecting two clamping plates, wherein a fixed grapple is arranged on the quick connector main body; the movable grapple system comprises a movable grapple, an oil cylinder, a linkage block A and a linkage block B, wherein the mounting end of the movable grapple is hinged to the quick connector body through a fixed shaft A, one end of the linkage block A is hinged to the back of the movable grapple through a pin shaft B, the other end of the linkage block A is hinged to one end of the linkage block B and the end of a telescopic rod of the oil cylinder through a pin shaft A, the other end of the linkage block B is hinged to the quick connector body through a fixed shaft C, and the tail of the oil cylinder is hinged to the middle of the quick connector body through a fixed shaft B. In this application, the oil cylinder does not directly participate in the action of grabbing the accessory of the quick connector, so that the requirement on the oil cylinder is low and the oil cylinder is not easy to damage.
Description
Technical Field
The utility model relates to a quick connector for excavator belongs to adapting unit technical field for the excavator.
Background
The quick connector of the excavator is a product capable of realizing quick and efficient replacement of the excavator accessories. Particularly, on some occasions needing frequent replacement of accessories, the quick connector can save the replacement time by more than 10 times, the effective working time of the excavator is greatly improved, and the use of the accessories plays an extremely important role in engineering construction.
However, due to the structural design problem, firstly, the oil cylinder of the quick connector almost directly bears the vibration and impact generated when the connected accessory works, so that the requirement on the strength of the oil cylinder is high, and the oil cylinder is easy to damage; secondly, after the quick connector grasps the accessory, the safety shaft needs to be manually installed, and the grasped accessory cannot fall off under the condition that the oil cylinder is damaged. And many operators do not mount the safety shaft intentionally or unintentionally, so that the quick connector has a large potential safety hazard when in use.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to oil cylinder fragile easily and ordinary quick-operation joint can't realize self-locking function scheduling problem in the quick-operation joint ware of current excavator, provide a quick-operation joint ware for excavator.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a quick connector for an excavator comprises a quick connector main body formed by connecting two clamping plates, wherein a fixed grapple is arranged on the quick connector main body and is positioned at one end of the quick connector; the movable grapple system comprises a movable grapple, an oil cylinder, a linkage block A and a linkage block B, wherein the mounting end of the movable grapple is hinged to the quick connector body through a fixed shaft A, one end of the linkage block A is hinged to the back of the movable grapple through a pin shaft B, the other end of the linkage block A is hinged to one end of the linkage block B and the end of a telescopic rod of the oil cylinder through a pin shaft A, the other end of the linkage block B is hinged to the quick connector body through a fixed shaft C, and the tail of the oil cylinder is hinged to the middle of the quick connector body through the fixed shaft B. The movable grapple and the fixed grapple are positioned at two ends of the quick connector body.
On the basis of the technical scheme, the utility model discloses a reach the convenience of use and the stability of equipment, can also make following improvement to foretell technical scheme:
further, the pin shaft A is positioned between the fixed shaft A and the fixed shaft C. When the telescopic rod of the oil cylinder extends out, the pin shaft A is pushed, the pin shaft A drives the linkage block A and the linkage block B which are arranged on the pin shaft A to move, the other end of the linkage block B is arranged on the fixed shaft C, and the two ends of the linkage block A are hinged, so that the linkage block A pushes the movable grapple to rotate by taking the fixed shaft A as an axis, the functions of holding tightly and releasing are realized, and the function of the quick connector is completed. The linkage block A and the linkage block B are hinged with the extending end of the oil cylinder, so that the function of the quick connector is realized, the buffer effect is achieved, the oil cylinder is prevented from being impacted excessively, and the oil cylinder is protected from being damaged.
Furthermore, a spring is arranged on the pin shaft A, and the other end of the spring is fixed on the quick connector main body. The spring can further buffer the oil cylinder.
Furthermore, a limit shaft is arranged in the motion direction of a telescopic rod of the oil cylinder and fixed on the quick connector main body. The limiting shaft is used for limiting the moving range of the linkage block A and the linkage block B.
Furthermore, the two clamping plates of the quick connector main body are connected through the connecting plates at the two ends, and the two connecting plates are respectively positioned on the movable grab hook side and the fixed grab hook side.
Furthermore, two ends of the spring are respectively arranged on the movable grab hook side connecting plate and the pin shaft A.
Furthermore, the movable grapple and the fixed grapple are located on one side of the quick connector body, and a pin shaft hole for connecting with an excavator is formed in the opposite side of the quick connector body.
The utility model has the advantages that: the following problems are solved. Firstly, the oil cylinder does not directly participate in the action of grabbing the accessory of the quick connector, so that the requirement on the oil cylinder is low, the oil cylinder is not easy to damage, and the cost of the quick connector is greatly reduced. And secondly, the self-locking function is realized, and the operation of additionally installing a safety shaft is not needed. Not only the operation is simple but also the safety is high.
Drawings
FIG. 1 is a schematic view of the internal linkage of a quick connector for an excavator according to the present application;
fig. 2 is a schematic view of the structure of the quick connector of fig. 1 in a grasping state.
The reference numbers are recorded as follows: the quick connector comprises a quick connector body (1), an oil cylinder (2), a movable grapple (3), a linkage block A (4), a spring (5), a limiting shaft (6), a linkage block B (7), a pin shaft A (8), a fixed shaft A (9), a pin shaft B (10) and a fixed shaft C (11).
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
A quick connector for an excavator (see figures 1 and 2) comprises a quick connector main body 1 formed by connecting two clamping plates, wherein a fixed grapple is arranged on the quick connector main body 1, and a movable grapple system is arranged between the two clamping plates of the quick connector main body 1; the activity grapple system include activity grapple 3, hydro-cylinder 2, linkage piece A4 and linkage piece B7, the installation end of activity grapple 3 install on quick connector main part 1 through fixed axle A9 is articulated, the one end of linkage piece A4 articulates the spine back at activity grapple 3 through round pin axle B10, the other end of linkage piece A4 is articulated through the tip of the one end of round pin axle A8 with linkage piece B7 and the telescopic link of hydro-cylinder 2, the other end of linkage piece B7 is articulated to be installed on quick connector main part 1 through fixed axle C11, the afterbody of hydro-cylinder 2 is articulated to be installed at the middle part of quick connector main part 1 through fixed axle B.
The pin shaft A8 is located between the fixed shaft A9 and the fixed shaft C11.
And a spring 5 is arranged on the pin shaft A8, and the other end of the spring 5 is fixed on the quick connector main body 1.
The telescopic rod of the oil cylinder 2 is provided with a limiting shaft 6 in the moving direction, and the limiting shaft 6 is fixed on the quick connector main body 1.
The two clamping plates of the quick connector main body 1 are connected through the connecting plates at two ends, and the two connecting plates are respectively positioned on the movable grapple 3 side and the fixed grapple side.
Two ends of the spring 5 are respectively arranged on the connecting plate at the side of the movable grapple 3 and the pin shaft A8.
The movable grapple 3 and the fixed grapple are located on one side of the quick connector body 1, and a pin shaft hole for connecting with an excavator is formed in the opposite side of the quick connector body 1.
As shown in fig. 1, the cylinder is in a contracted state: a quick connector body 1. The structure is that an upper plate and a lower plate are connected together and are connected with the left side and the right side through a connecting plate. Two pin shaft holes connected with the excavator are arranged on the upper side of the excavator, a fixed grapple connected with an attachment is arranged on the right side of the lower end of the excavator, and a clamping plate is arranged on the left side of the excavator. 2, quick connector oil cylinder. And 3, the movable grapple is hinged on the main body 1 through a pin shaft. The upper grapple and the main body clamping plate 1 cooperate to grasp the accessory pin shaft. And 4, the lower end of the linkage block A is hinged to the movable grapple 3 through a pin shaft, and the upper end of the linkage block A is hinged to the oil cylinder and the linkage block B7 at the position X through a pin shaft. And 5, stretching the spring. One end of the connecting rod is fixed on the main body 1, and the other end of the connecting rod is fixed on the oil cylinder 2, and the hinges of the linkage blocks A and B are 3 and 4. And 6, a limiting shaft is fixed in the pin shaft hole of the main body 1. And 7, the upper end of the linkage block B is hinged to the main body 1 through a pin shaft.
When the oil cylinder works, the oil cylinder 2 is filled with oil and extends out. And under the action of the tension of the spring 5, the pin shaft A is moved leftwards. When the linkage block B7 reaches the position of the limiting shaft 6, the action is stopped. At this time, the movable grapple 3 and the clamp plate of the quick connector body 1 simultaneously act to grasp the accessory pin. As shown in fig. 2.
Through reasonable clearance design, the included angle between the linkage block A4 and the linkage block B7 can be larger than 180 degrees. At this time, even if the cylinder fails. The accessory falls off downwards and acts on the limiting shaft 6 through the linkage block A4 and the linkage block B. Prevent the attachment from falling off to achieve the purpose of self-locking.
Meanwhile, the spring can not only slow down the vibration caused by the clearance of the pin shaft, but also ensure that the linkage block B is close to the limiting shaft. The self-locking failure condition can not occur.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A quick connector for an excavator comprises a quick connector main body (1) formed by connecting two clamping plates, wherein a fixed grapple is arranged on the quick connector main body (1), and the quick connector is characterized in that a movable grapple system is arranged between the two clamping plates of the quick connector main body (1); the movable grapple system comprises a movable grapple (3), an oil cylinder (2), a linkage block A (4) and a linkage block B (7), wherein the mounting end of the movable grapple (3) is hinged to the quick connector body (1) through a fixing shaft A (9), one end of the linkage block A (4) is hinged to the back of the movable grapple (3) through a pin shaft B (10), the other end of the linkage block A (4) is hinged to one end of the linkage block B (7) and the end of a telescopic rod of the oil cylinder (2) through a pin shaft A (8), the other end of the linkage block B (7) is hinged to the quick connector body (1) through a fixing shaft C (11), and the tail of the oil cylinder (2) is hinged to the middle of the quick connector body (1) through a fixing shaft B (12).
2. The quick connector for excavators according to claim 1, characterized in that the pin A (8) is located between the fixed axis A (9) and the fixed axis C (11).
3. The quick connector for excavators according to claim 1 or 2, characterized in that a spring (5) is mounted on the pin A (8), and the other end of the spring (5) is fixed to the quick connector body (1).
4. The quick connector for excavators according to claim 3, characterized in that the telescopic rod of the cylinder (2) is provided with a limit shaft (6) in the direction of motion, and the limit shaft (6) is fixed to the quick connector body (1).
5. The quick connector for excavators according to claim 4, characterized in that the two clamping plates of the quick connector body (1) are connected by connecting plates at both ends, which are located on the movable grapple (3) side and the fixed grapple side, respectively.
6. The quick connector for excavators according to claim 5, characterized in that the spring (5) is mounted at its both ends on the side connection plate of the movable grapple (3) and on the pin A (8), respectively.
7. The quick connector for excavators according to claim 1, characterized in that the movable grapple (3) and the fixed grapple are located on one side of the quick connector body (1), and a pin hole for connection with an excavator is provided on the opposite side of the quick connector body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921796501.XU CN211285740U (en) | 2019-10-24 | 2019-10-24 | Quick connector for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921796501.XU CN211285740U (en) | 2019-10-24 | 2019-10-24 | Quick connector for excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211285740U true CN211285740U (en) | 2020-08-18 |
Family
ID=72035429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921796501.XU Active CN211285740U (en) | 2019-10-24 | 2019-10-24 | Quick connector for excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211285740U (en) |
-
2019
- 2019-10-24 CN CN201921796501.XU patent/CN211285740U/en active Active
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