CN112900517B

CN112900517B - Adjustable excavator connector and excavator

Info

Publication number: CN112900517B
Application number: CN202110113850.2A
Authority: CN
Inventors: 王全; 左欧阳; 陈继承
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2022-06-07
Anticipated expiration: 2041-01-27
Also published as: CN112900517A

Abstract

The invention provides an adjustable excavator connector and an excavator, wherein the adjustable excavator connector comprises: the bucket rod connecting module comprises at least two connecting pin shafts; the accessory connecting module comprises a first supporting piece and a second supporting piece, wherein the first supporting piece and the second supporting piece are arranged in parallel and are respectively connected with the connecting pin shaft in a sliding manner; the opening adjusting mechanism comprises a double-end stud, the thread directions of two ends of the double-end stud are opposite, one end of the double-end stud is connected with the first supporting piece, and the other end of the double-end stud is connected with the second supporting piece; and the middle retainer is positioned between the first support piece and the second support piece and is fixedly connected with the bucket rod connecting module, and the middle retainer is connected with the double-end stud to limit the double-end stud axially. The adjustable excavator connector and the excavator provided by the invention can meet the installation requirements of accessories with different opening sizes by realizing the adjustment of the opening size, and can realize centering in the adjustment process.

Description

Adjustable excavator connector and excavator

Technical Field

The invention relates to the technical field of engineering machinery, in particular to an adjustable excavator connector and an excavator.

Background

A work machine such as an excavator has an important position in the field of construction machines, and during use, different attachments such as a bucket, a grapple, a breaker, a lifting hook, and the like can be used according to work demands. The quick connector for connecting the excavator and different accessories is developed at the same time, the device can conveniently switch the working scene of the excavator, and the working efficiency is improved. However, when the same manufacturer designs the accessories, different sizes may be designed for the opening parts of the accessories, and in addition, the sizes of the opening parts of the accessories designed by different manufacturers are different, which causes certain trouble for users to select the accessories.

The existing partial quick connector is reasonably matched with a digging machine and accessories by increasing the opening of the upper shaft position, reducing the opening of the lower part of the shell and increasing the flange gasket on the pin shaft to adjust and match the opening size. The adoption increases flange gasket form and adjusts out-of-gear size, has following shortcoming:

1) when the quick connector is matched with different accessories, different flange gaskets need to be prepared in advance, and the operation is complex;

2) the sizes of opening files of accessories designed by different manufacturers are different, and the sizes of the opening files are continuously changed, so that the prepared flange gasket has uncertainty, and the application range is greatly limited;

3) the flange pad is adopted to adjust the opening size, so that overlarge gaps are easily caused, vibration is formed, and the service life of the machine is shortened.

Disclosure of Invention

The invention provides an adjustable excavator connector and an excavator, which are used for solving the problem that the opening size of the connector in the prior art is inconvenient to adjust.

The invention provides an adjustable excavator connector, comprising:

the bucket rod connecting module comprises at least two connecting pin shafts;

the accessory connecting module comprises a first supporting piece and a second supporting piece, and the first supporting piece and the second supporting piece are arranged in parallel and are respectively connected with the connecting pin shaft in a sliding manner;

the opening adjusting mechanism comprises a double-end stud, the thread directions of two ends of the double-end stud are opposite, one end of the double-end stud is connected with the first supporting piece, and the other end of the double-end stud is connected with the second supporting piece;

the middle retainer is located between the first supporting piece and the second supporting piece and is fixedly connected with the bucket rod connecting module, and the middle retainer is connected with the double-end stud to limit the double-end stud axially.

According to the adjustable excavator connector provided by the invention, the middle part of the stud is provided with the limiting shaft collar, the middle retainer is provided with the limiting groove, the opening direction of the limiting groove is vertical to the axial direction of the stud, and the limiting shaft collar is rotatably connected with the limiting groove.

According to the adjustable excavator connector provided by the invention, the stud is detachably connected with a limiting assembly, and the limiting assembly is used for limiting the stud in an axial rotation manner.

According to the adjustable excavator connector provided by the invention, the limiting assembly comprises a limiting sleeve and a limiting block, a square head is arranged at the end part of the stud, the limiting block is inserted into the square head, and the limiting sleeve is sleeved with the limiting block and is fixedly connected with the first supporting piece or the second supporting piece.

According to the adjustable excavator connector provided by the invention, the accessory connecting module further comprises a locking hook and a rotary driving mechanism, the locking hook is rotationally connected to the connecting pin shaft and is positioned between the first supporting piece and the second supporting piece, the rotary driving mechanism is connected with the middle retainer and the locking hook, and the rotary driving mechanism is suitable for driving the locking hook to rotate around the connecting pin shaft.

According to the adjustable excavator connector provided by the invention, the rotary driving mechanism comprises a threaded block, a screw rod, a supporting block, a supporting pin and a stop block, the threaded block is rotatably connected to the locking hook, the supporting block is rotatably connected to the supporting pin, the supporting pin is slidably connected to the first supporting piece and the second supporting piece, one end of the screw rod is in threaded connection with the threaded block, the other end of the screw rod is rotatably connected with the supporting block, and the stop block is detachably connected with the screw rod.

According to the adjustable excavator connector provided by the invention, the lock hook is provided with a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are respectively arranged on two sides of the middle retainer and are respectively in rotating connection with the connecting pin shaft.

According to the adjustable excavator connector provided by the invention, the bucket rod connecting module further comprises a first outer supporting piece, a second outer supporting piece, a bucket rod pin shaft and a fixing plate, the first outer supporting piece and the second outer supporting piece are arranged in parallel at intervals, the bucket rod pin shaft and the connecting pin shaft are respectively fixed between the first outer supporting piece and the second outer supporting piece, the bucket rod pin shaft is used for connecting a bucket rod, and the fixing plate is respectively and fixedly connected with the first outer supporting piece, the second outer supporting piece and the middle retainer.

According to the adjustable excavator connector provided by the invention, the middle retainer comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are vertically fixed, a pin shaft through hole is formed in the first connecting part, the connecting pin shaft penetrates through the pin shaft through hole, and the limiting groove is formed in the second connecting part.

The invention also provides an excavator, which comprises the adjustable excavator connector.

According to the adjustable excavator connector and the excavator provided by the invention, the first supporting piece and the second supporting piece can be driven to slide along the connecting pin shaft in opposite directions through the opening adjusting mechanism so as to adjust the distance between the first supporting piece and the second supporting piece, realize adjustment of opening sizes and meet the installation requirements of accessories with different opening sizes. In the adjusting process, the middle retainer can axially limit the stud, so that the relative position of the stud and the bucket rod connecting module is not changed; the first supporting piece and the second supporting piece are ensured to be symmetrical with respect to the middle vertical plane of the central axis of the connecting pin shaft all the time, so that the aim of centering is fulfilled; the positions of a component (a locking hook) used for connecting accessories on the accessory connecting module, a driving device (a rotary driving mechanism) and the like are ensured to be unchanged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic view of an overall structure of an adjustable excavator connector according to the present invention;

FIG. 2 is a schematic view of an internal structure of an adjustable excavator connector according to the present invention;

FIG. 3 is a schematic view of a rotary drive mechanism in an adjustable excavator coupler according to the present invention;

fig. 4 is a schematic structural diagram of an intermediate holder in an adjustable excavator coupler according to the present invention.

Reference numerals are as follows:

100. a bucket rod connecting module; 110. Connecting a pin shaft; 120. A first outer support;

130. a second outer support member; 140. A bucket rod pin shaft; 150. A fixing plate;

200. an accessory connecting module; 210. A first support member; 220. A second support member;

230. a latch hook; 231. A first connecting plate; 232. A second connecting plate;

240. a rotation driving mechanism; 241. A thread block; 242. A screw rod;

243. a support block; 244. A support pin; 245. A stopper block;

300. a stud; 310. A limit collar; 320. A square head;

330. a limiting component; 331. A limiting sleeve; 332. A limiting block;

400. an intermediate retainer; 410. A first connection portion; 420. A second connecting portion;

421. a limiting groove.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

An adjustable excavator coupler according to an embodiment of the present invention is described below with reference to fig. 1 and 2, and includes a stick connecting module 100, an accessory connecting module 200, a shift opening adjusting mechanism, and an intermediate holder 400.

The arm connecting module 100 may be used to connect an arm of a work machine such as an excavator, and includes at least two connecting pins 110, and the connecting pins 110 are disposed in parallel at intervals and aligned with each other in a direction perpendicular to an extending direction thereof. Optionally, the connecting pins 110 are the same length.

The accessory connection module 200 is connected to the arm connection module 100, and can be used to connect an accessory such as a bucket, a grapple, a breaking hammer, a grapple, or a lifting hook. The accessory connecting module 200 includes a first supporter 210 and a second supporter 220, and the first supporter 210 and the second supporter 220 may adopt a plate-shaped structure disposed in parallel. The first supporting member 210 and the second supporting member 220 are slidably connected to the connecting pin 110 along the extending direction of the connecting pin 110, respectively. The first support 210 and the second support 220 are provided with fixing hooks capable of being used for connecting accessories, and the fixing hooks of the first support 210 and the second support 220 are aligned in the arrangement direction of the first support 210 and the second support 220.

The open-gear adjusting mechanism is connected to the first supporting member 210 and the second supporting member 220 respectively, so as to drive the first supporting member 210 and the second supporting member 220 to slide along the connecting pin 110 in opposite directions. When the opening adjustment mechanism drives the first supporting member 210 and the second supporting member 220 to slide close to each other, the opening size of the accessory connecting module 200 can be reduced; when the opening adjustment mechanism drives the first supporting member 210 and the second supporting member 220 to slide away from each other, the opening size of the accessory connecting module 200 can be increased. By adjusting the opening size of the accessory connecting module 200, the accessory connecting module can adapt to accessories with different opening sizes.

The open-gear adjusting mechanism comprises a stud 300, the two ends of the stud 300 are opposite in thread direction, one end of the stud 300 is in threaded connection with the first supporting piece 210, and the other end of the stud 300 is in threaded connection with the second supporting piece 220. When the stud 300 rotates, the stud 300 can move the first support 210 and the second support 220 in opposite directions. Also, the thread pitches of both ends of the stud 300 are equal, and the distances that the first and

second supports

210 and 220 move when the stud 300 is rotated are always equal.

In an alternative, the stud 300 is rotated manually, for example, by providing an outer or inner hex at one end of the stud 300 and driving it into rotation with a hand tool such as a wrench, screwdriver, or the like. In another alternative, the open-gear adjusting mechanism further comprises a speed reducing motor and a transmission structure, wherein the speed reducing motor is connected with the stud 300 through the transmission structure. The transmission structure can specifically adopt a chain, a belt or a gear and the like.

The middle holder 400 is disposed between the first support 210 and the second support 220, the middle holder 400 is fixedly connected to the arm connecting module 100, and a position where the middle holder is fixed to the arm connecting module 100 is located in the middle of the connecting pin 110. The distance from the middle holder 400 to the first support 210 is equal to the distance from the second support 220. The intermediate retainer 400 is coupled to the stud 300 to provide axial restraint to the stud 300, keeping the stud 300 in an intermediate position. When the stud 300 drives the first support 210 and the second support 220 to move, the centering effect of the first support 210 and the second support 220 can be ensured.

The connector provided by the invention not only can conveniently adjust the opening size of the accessory connecting module 200 to adapt to accessories with different opening sizes, but also can maintain the middle position of the accessory connecting module 200 unchanged, and ensures that the problem of deflection does not exist after the accessories are connected in place.

In one embodiment of the present invention, the stud 300 is provided with a stop collar 310 at the middle portion thereof, and the intermediate holder 400 is provided with a stop groove 421, wherein the opening direction of the stop groove 421 is perpendicular to the axial direction of the stud 300. Optionally, the middle holder 400 is provided with two baffles which are arranged in parallel at intervals and are perpendicular to the connecting pin shaft 110, and the limiting groove 421 is a groove formed by the two baffles. A portion of the stop collar 310 is located between the two retainers so that the stop collar 310 is rotatably coupled to the stop slot 421, and at this time, the retainers on both sides of the stop slot 421 can axially stop the stud 300.

Optionally, the stud 300 is detachably connected with a limiting assembly 330, and the limiting assembly 330 limits the stud 300 in axial rotation. After the limiting assembly 330 is connected with the stud 300, the stud 300 cannot rotate, and at this time, the positions of the first supporting member 210 and the second supporting member 220 are fixed, that is, the opening size of the accessory connecting module 200 is fixed; with the stop assembly 330 removed from connection with the stud 300, the stud 300 can be rotated axially to facilitate adjustment of the position of the first support 210 and the second support 220.

Optionally, the limiting assembly 330 includes a limiting sleeve 331 and a limiting block 332, the end of the stud 300 is provided with a square head 320, the limiting block 332 is provided with a square groove, and the limiting block 332 is inserted into the square head 320. The cross section of the limiting block 332 is square, rectangular, polygonal or irregular, the limiting sleeve 331 is sleeved with the limiting block 332 and fixedly connected with the first supporting piece 210 or the second supporting piece 220, the limiting sleeve 331 can limit the limiting block 332 in axial rotation, and the stud 300 is limited in axial rotation through the limiting block 332. When the opening size of the accessory connecting module 200 needs to be adjusted, the limiting block 332 can be pulled out, and the stud 300 can axially rotate at this time.

The accessory connecting module 200 further includes a locking hook 230 and a rotation driving mechanism 240, the locking hook 230 is rotatably connected to the connecting pin 110, and an opening direction of the locking hook 230 is opposite to an opening direction of the fixing hooks of the first and second supporting

members

210 and 220. One end of the rotation driving mechanism 240 is connected to the latch hook 230, and the other end is connected to the intermediate holder 400. The rotation driving mechanism 240 operates to rotate the locking hook 230 around the connecting pin 110, so as to facilitate quick connection or removal of the accessory.

Referring to fig. 3, the rotary driving mechanism 240 may alternatively include a screw block 241, a lead screw 242, a support block 243, a support pin 244, and a stopper 245. The screw block 241 is rotatably connected to the locking hook 230, and the rotation axis direction thereof is along the axial direction of the connection pin 110. The support pin 244 is parallel to the connection pin shaft 110 and slidably coupled to the first and

second supports

210 and 220, and the support block 243 is rotatably coupled to the support pin 244. One end of the screw 242 is connected with the screw 241 in a threaded manner, and the other end is connected with the supporting block 243 in an axial rotation manner. When the screw 242 rotates, the locking hook 230 can be driven to rotate around the connecting pin 110. The stop block 245 is detachably connected with the screw rod 242, and after the stop block 245 is installed on the screw rod 242, axial rotation limitation can be formed on the screw rod 242, so that the angle of the locking hook 230 is fixed.

Optionally, the end cross section of the screw rod 242 is a non-circular structure such as a square, a rectangle, an ellipse, etc., the stop block 245 is in insertion fit with the screw rod 242, a clamping groove is arranged on the supporting block 243, and the stop block 245 is located in the clamping groove. When the stop block 245 is in plug fit with the screw rod 242, axial rotation limitation is formed on the screw rod 242, and after the stop block 245 is pulled out of the clamping groove and is separated from the screw rod 242, the screw rod 242 can be rotated. The end of the screw 242 may be provided with a linear, cross or hexagonal recess to facilitate the rotation operation by means of a tool such as a screwdriver or allen wrench.

The rotary driving mechanism 240 may also be an oil cylinder, the rotary driving mechanism 240 is perpendicular to the connecting pin 110, and the rotary driving mechanism 240 and the locking hook 230 and the rotary driving mechanism 240 and the middle holder 400 are connected by a rotating shaft, and the rotating shaft is parallel to the connecting pin 110. When the rotary drive mechanism 240 expands and contracts, the latch hook 230 is driven to rotate about the connection pin 110.

Optionally, the locking hook 230 is provided with a first connecting plate 231 and a second connecting plate 232, and the first connecting plate 231 and the second connecting plate 232 are arranged in parallel at intervals and are respectively disposed at two sides of the middle retainer 400, so that the middle retainer 400 can limit the locking hook 230 and prevent the locking hook 230 from moving axially along the connecting pin 110.

Referring to fig. 4, optionally, the middle holder 400 includes a first connection portion 410 and a second connection portion 420, the first connection portion 410 and the second connection portion 420 are connected to each other vertically, the first connection portion 410 is provided with pin holes, the number of the pin holes is the same as the number of the connection pins 110, and the connection pins 110 pass through the pin holes. The first connection plate 231 and the second connection plate 232 are disposed at both sides of the first connection portion 410. The limiting groove 421 is disposed on the second connecting portion 420, and one end of the rotation driving mechanism 240 away from the locking hook 230 is connected to the second connecting portion 420. The intermediate holder 400 of such a structure can form a sufficient installation space to facilitate the arrangement of the latch hook 230 and the rotary drive mechanism 240. And also may facilitate installation of the open range adjustment mechanism, for example, between the second coupling part 420 and the latch hook 230 at the lower side of the first coupling part 410.

Referring back to fig. 1 and 2, in one embodiment of the present invention, the arm connecting module 100 further includes a first outer support 120, a second outer support 130, an arm pin 140, and a fixing plate 150. The first and second

outer supports

120 and 130 may have a plate-shaped structure and be spaced apart from each other in parallel. The arm pin 140 and the connecting pin 110 are respectively fixed between the first outer support 120 and the second outer support 130, wherein two arm pins 140 are provided and located on one side of the connecting pin 110 away from the accessory connecting module 200 for connecting the arm. The fixing plate 150 is fixedly connected to the first outer support 120, the second outer support 130 and the middle holder 400, and the fixing plate 150 is connected to the ends of the first outer support 120 and the second outer support 130, so that the bucket rod connection module 100 maintains a stable shape and the middle holder 400 can be fixedly connected to the bucket rod connection module 100.

In yet another embodiment of the present invention, an excavator is provided comprising the adjustable excavator connector of any one of the above embodiments. The excavator is provided with a bucket rod, and the bucket rod can be connected with accessories with different opening degrees through an adjustable excavator connector.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An adjustable excavator connector, comprising:

the bucket rod connecting module comprises at least two connecting pin shafts;

2. The adjustable excavator connector of claim 1 wherein the stud is provided with a stop collar at a central portion thereof, the intermediate retainer is provided with a stop groove, an opening direction of the stop groove is perpendicular to an axial direction of the stud, and the stop collar is rotatably coupled to the stop groove.

3. The adjustable excavator connector of claim 1 wherein the stud is removably connected to a limit assembly, the limit assembly providing an axial rotational limit to the stud.

4. The adjustable excavator connector as claimed in claim 3, wherein the limiting assembly comprises a limiting sleeve and a limiting block, a square head is arranged at the end of the stud, the limiting block is inserted into the square head, and the limiting sleeve is sleeved with the limiting block and is fixedly connected with the first support piece or the second support piece.

5. The adjustable excavator connector of claim 1 wherein the accessory connecting module further includes a latch hook rotatably connected to the connecting pin and located between the first support member and the second support member, and a rotary drive mechanism connecting the intermediate retainer and the latch hook, the rotary drive mechanism adapted to drive the latch hook to rotate about the connecting pin.

6. The adjustable excavator connector of claim 5 wherein the rotary drive mechanism includes a screw block rotatably coupled to the latch hook, a screw rod, a support block rotatably coupled to the support pin slidably coupled to the first support member and the second support member, a support pin having one end threadedly coupled to the screw block and the other end rotatably coupled to the support block, and a stopper block detachably coupled to the screw rod.

7. The adjustable excavator connector of claim 5 wherein the latch hook is provided with a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are respectively disposed on two sides of the intermediate retainer and are respectively rotatably connected to the connecting pin.

8. The adjustable excavator connector of claim 1, wherein the arm connecting module further comprises a first outer support member, a second outer support member, an arm pin and a fixing plate, the first outer support member and the second outer support member are arranged in parallel at intervals, the arm pin and the connecting pin are respectively fixed between the first outer support member and the second outer support member, the arm pin is used for connecting an arm, and the fixing plate is respectively fixedly connected with the first outer support member, the second outer support member and the intermediate holder.

9. The adjustable excavator connector of claim 2 wherein the intermediate retainer includes a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are vertically fixed, the first connecting portion is provided with a pin through hole, the connecting pin passes through the pin through hole, and the limiting groove is provided on the second connecting portion.

10. An excavator comprising an adjustable excavator connector as claimed in any one of claims 1 to 9.