CN209891280U

CN209891280U - Coupler and wear-resistant part for excavating equipment

Info

Publication number: CN209891280U
Application number: CN201920271853.7U
Authority: CN
Inventors: 任美康; 罗灵杰
Original assignee: Ningbo Hopesun New Material Co Ltd
Current assignee: Ningbo Hopesun New Material Co Ltd
Priority date: 2019-03-04
Filing date: 2019-03-04
Publication date: 2020-01-03
Anticipated expiration: 2029-03-04

Abstract

The utility model provides a connector belongs to excavating machinery technical field, include: the pin shaft is respectively provided with a first slotted hole and a second slotted hole along the axis direction and the radial line direction, the first slotted hole is communicated with the second slotted hole, a lock cylinder and a lock tongue are respectively embedded in the first slotted hole and the second slotted hole, and the lock cylinder moves to drive the lock tongue to move up and down along the radial line direction. The utility model also provides a wear-resisting part for excavating equipment, include: the wear-resistant tooth root is connected with the excavator bucket, the wear-resistant tooth tip is connected with the wear-resistant tooth root in a nested mode, and the coupler penetrates through the connecting portion of the wear-resistant tooth root and the wear-resistant tooth tip. The utility model discloses a quick dismantlement, installation and the change between wear-resisting tooth root and the wear-resisting prong are realized to the coupler, in addition, make the reliability of being connected between wear-resisting tooth root and the wear-resisting prong higher through the coupler, when the staff is changing wear-resisting prong, its factor of safety is higher.

Description

Coupler and wear-resistant part for excavating equipment

Technical Field

The utility model belongs to the technical field of the excavating machine, a coupler is related to, especially a coupler and be used for excavating equipment's wear-resisting part.

Background

Excavating equipment is required to be equipped with wear parts at the front edge of a bucket in order to better penetrate excavated materials and protect the bucket during excavating work. Wear parts are generally made up of points, roots and attachments to secure the points and roots. When the wear assembly is installed at the front edge of the bucket, the tooth root of the wear-resistant part is firstly fixed on the bucket, and then the tooth tip is fixed on the tooth root by a coupler. In the excavation process, the breaking equipment is damaged due to the falling of the wear-resistant part, and meanwhile, the tooth tip is most easily worn and needs to be replaced frequently.

Chinese patent (CN102653949A) discloses an excavator bucket tooth including the toothholder that has the installation department and the bucket tooth that has connecting portion, two connecting portions of toothholder installation department and bucket tooth on offer the pinhole that is in on the same axial lead, the installation department of toothholder insert and link firmly through pin and jump ring between two connecting portions of bucket tooth, the pin on seted up annular groove just jump ring card in annular groove, the bucket tooth on the pinhole on seted up the counter bore on the terminal surface, the counter bore with the pin on the annular groove be in on the same vertical plane just the jump ring be located the counter bore.

However, when the pin and the snap spring (constituting the coupler) are disassembled, the pin and the snap spring need to be hammered vigorously, and the snap spring is easy to wear, so that the disassembling efficiency is reduced, the coupler is easy to fail, and certain potential safety hazards exist for operators.

In summary, in order to solve the structural deficiency of the existing coupler, a coupler which is convenient to disassemble, high in reliability, high in safety and long in service life needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art, and provides a coupler which is convenient to disassemble, high in reliability, high in safety and long in service life.

The purpose of the utility model can be realized by the following technical proposal: a coupling, comprising: the pin shaft is respectively provided with a first slotted hole and a second slotted hole along the axis direction and the radial line direction, the first slotted hole is communicated with the second slotted hole, a lock cylinder and a lock tongue are respectively embedded in the first slotted hole and the second slotted hole, and the lock cylinder moves to drive the lock tongue to move up and down along the radial line direction.

In the above connector, the lock tongue is driven to move up and down along the radial line direction of the lock tongue by the circumferential rotation of the lock core.

In the above-mentioned coupler, an elastic member is embedded in the second slot, and one end of the elastic member is connected to the bottom of the second slot, and the other end of the elastic member is connected to one end of the lock tongue.

In the above connector, the lock cylinder and the lock tongue are connected in a concave-convex fit manner.

In the above connector, the lock cylinder at the end matching with the lock tongue is provided with a columnar protrusion, the lock tongue at the end matching with the lock cylinder is provided with an annular groove, and the columnar protrusion on the lock cylinder is inserted into the annular groove on the lock tongue.

In the above-mentioned coupler, the lock cylinder is arranged in a revolving body-shaped structure, wherein the columnar projection is far away from the center of the end where the columnar projection is located.

In the above-mentioned one type of coupler, the lock cylinder is provided in a stepped structure, wherein the circumferential diameter of the lock cylinder at the end provided with the columnar projection is smaller than the circumferential diameter of the lock cylinder at the end provided with the steering hole; the spring bolt is the column structure setting of isodiametric.

In one of the above-mentioned couplings, an annular sealing ring is provided on each of the lock cylinder at the end close to the steering hole and the lock tongue at the end far from the annular groove.

In the above coupler, a third slot is further provided along the radial line direction of the pin shaft, and the third slot is respectively communicated with the first slot and the second slot, wherein a limit structure is embedded in the third slot and is used in cooperation with the lock cylinder.

In the above-mentioned coupler, the limiting structure includes a limiting member embedded in the third slot, and one end of the limiting member is matched with an annular groove annularly arranged on the lock cylinder, wherein the annular groove is close to one end where the columnar protrusion is located.

In the above connector, the pin is provided with a clamping structure which prevents the pin from rotating synchronously and circumferentially when the lock cylinder drives the lock tongue to rotate.

The utility model also provides a wear-resisting part for excavating equipment, include: the wear-resistant tooth root is connected with the excavator bucket, the wear-resistant tooth tip is connected with the wear-resistant tooth root in a nested mode, and the coupler penetrates through the connecting portion of the wear-resistant tooth root and the wear-resistant tooth tip.

In the above wear-resistant part for excavating equipment, the wear-resistant tooth root comprises a mounting part, and a first through hole is formed in the thickness direction of the mounting part; the wear-resistant tooth point comprises a mounting cavity part which is connected with the mounting part in an embedded mode, a second through hole is formed in the thickness direction of the mounting cavity part, when the wear-resistant tooth root is connected with the wear-resistant tooth point, the mounting part is embedded with the mounting cavity part, the first through hole and the second through hole are arranged coaxially, and a channel formed by the first through hole and the second through hole serves as a mounting channel of the coupler.

In the wear-resistant part for the excavating equipment, a limiting groove hole is formed in one end of the first through hole, or two limiting groove holes are formed in two ends of the first through hole respectively, wherein the limiting groove holes are communicated with the first through hole.

In one of the above wear parts for excavating equipment, the clamping structure includes a radial projection along a transverse line of the pin shaft on the coupler, which radial projection mates with a radial recess in the wall of the second through-hole.

In the wear-resistant part for the excavating equipment, the clamping structure comprises the clamping hole formed in the end part of the pin shaft, and the clamping hole and the first slotted hole are respectively located at two ends of the pin shaft.

Compared with the prior art, the utility model provides a pair of a wear-resisting part for excavating equipment realizes quick dismantlement, installation and the change between wear-resisting tooth root and the wear-resisting prong through the coupler, in addition, makes the reliability of being connected between wear-resisting tooth root and the wear-resisting prong higher through the coupler, and when the staff was changing wear-resisting prong, its factor of safety was higher.

Drawings

Fig. 1 is a schematic structural view of a coupling according to the present invention.

Fig. 2 is an exploded view of a coupling of the present invention.

Fig. 3 is a schematic view of another perspective of the coupling of the present invention.

Fig. 4 is a schematic cross-sectional view of fig. 3.

Fig. 5 is a schematic view of another embodiment of a coupling according to the present invention.

Fig. 6 is an exploded view of a wear part for excavating equipment according to the present invention.

Fig. 7 is an exploded view of a wear member for excavating equipment employing the coupling shown in fig. 5.

In the figure, 100, a pin shaft; 110. a first slot; 120. a second slot; 130. a third slot; 140. a radial projection; 150. a clamping hole; 200. a lock cylinder; 210. a steering hole; 220. a columnar bulge; 230. an annular groove; 300. a latch bolt; 310. an annular groove; 400. an elastic member; 500. an annular seal ring; 600. a limiting member; 700. wear resistant tooth root; 710. an installation part; 711. a first through hole; 712. limiting slotted holes; 800. wear-resistant tooth tips; 810. a mounting chamber part; 811. a second through hole; 812. a radial groove.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 to 4, the present invention provides a coupling, including: the pin 100 is provided with a first slot 110 and a second slot 120 along the axial direction and the radial direction, and the first slot 110 is communicated with the second slot 120, wherein a lock core 200 and a lock tongue 300 are respectively embedded in the first slot 110 and the second slot 120, and the lock core 200 moves to drive the lock tongue 300 to move up and down along the radial direction.

Preferably, as shown in fig. 1 to 4, the latch 300 is moved up and down along a radial direction thereof by the circumferential rotation of the key cylinder 200. In this embodiment, one end of the lock core 200 is provided with a turning hole 210 for nesting a turning tool, and the turning tool is used to drive the lock core 200 to rotate by inserting one end of the turning tool into the turning hole 210, so that the lock tongue 300 moves up and down in the second slot 120, and the operation is convenient and reliable.

Preferably, as shown in fig. 1 to 4, an elastic member 400 is embedded in the second slot 120, one end of the elastic member 400 is connected to the bottom of the second slot 120, and the other end of the elastic member 400 is connected to one end of the latch tongue 300, and the compression and extension of the elastic member 400 are changed by the rotation of the lock cylinder 200, so as to realize the up-and-down movement of the latch tongue 300, and further realize the retraction or extension of the other end of the latch tongue 300 out of the second slot 120. In addition, the automatic retraction of the latch tongue 300 is prevented by the elastic member 400, thereby improving the reliability of the use of the coupling. Further preferably, the elastic member 400 is rubber or a spring.

Preferably, as shown in fig. 1 to 4, the key cylinder 200 is connected to the latch tongue 300 by a male-female fit. Further preferably, a cylindrical protrusion 220 is disposed on the key cylinder 200 at an end matching with the latch tongue 300, and an annular groove 310 is disposed on the latch tongue 300 at an end matching with the key cylinder 200, wherein the cylindrical protrusion 220 on the key cylinder 200 is inserted into the annular groove 310 on the latch tongue 300. Further preferably, the lock core 200 is arranged in a revolving body-shaped structure, wherein the columnar protrusion 220 is far away from the center of the end where the columnar protrusion 220 is located, that is, the columnar protrusion 220 is located at the edge of the end where the columnar protrusion 220 is located, when the lock core 200 rotates, the columnar protrusion 220 on the lock core 200 rotates synchronously, if the columnar protrusion 220 rotates from top to bottom, the columnar protrusion 220 presses down the lower side wall of the annular groove 310, so that the latch bolt 300 retracts, and if the columnar protrusion 220 rotates from bottom to top, the columnar protrusion 220 lifts up the upper side wall of the annular groove 310, so that the latch bolt 300 extends out, so that a similar "cam structure" is formed between the lock core 200 and the latch bolt 300, and the latch bolt 300 moves up and down by the rotation of.

Further preferably, as shown in fig. 1 to 4, the lock cylinder 200 is provided in a stepped structure, wherein a circumferential diameter of the lock cylinder 200 at an end provided with the columnar protrusion 220 is smaller than a circumferential diameter of the lock cylinder 200 at an end provided with the steering hole 210; the latch tongue 300 is arranged in a cylindrical structure with equal diameter. Further preferably, an annular sealing ring 500 is respectively arranged on the lock cylinder 200 close to one end of the steering hole 210 and the lock tongue 300 far away from one end of the annular groove 310, so that the sealing performance of the first slot 110 and the second slot 120 is ensured, external macromolecular particles such as small stones and the like are prevented from entering the first slot 110 or the second slot 120 to influence the rotary motion and the linear motion of the lock cylinder 200 and the lock tongue 300, the hole walls of the first slot 110 and the second slot 120 and the side walls of the lock tongue 300 and the lock cylinder 200 are prevented from being scratched, and the service life of the coupler is prolonged.

Preferably, as shown in fig. 1 to 4, a third slot 130 is further disposed along a radial direction of the pin 100, and the third slot 130 is respectively communicated with the first slot 110 and the second slot 120, wherein a position-limiting structure is embedded in the third slot 130, and the position-limiting structure is used in cooperation with the lock core 200. In the present embodiment, the degree of freedom of the lock cylinder 200 in the axial direction within the first slot 110 is limited by the stopper structure, so that the lock cylinder 200 can only achieve its circumferential rotation, thereby improving the reliability of use of the coupling.

Further preferably, as shown in fig. 1 to 4, the limiting structure includes a limiting member 600 embedded in the third slot 130, and one end of the limiting member 600 is matched with an annular groove 230 annularly arranged on the lock cylinder 200, wherein the annular groove 230 is close to one end where the columnar protrusion 220 is located. In this embodiment, an annular groove 230 is provided on the lock cylinder 200, so that two sides of the annular groove 230 form steps, wherein the end of the retaining member 600 is inserted into the annular groove 230, and further preferably, the axial width dimension of the annular groove 230 is equivalent to the end dimension of the retaining member 600, thereby defining the degree of freedom of the lock cylinder 200 in the axial direction. The lock cylinder 200 is prevented from shaking in the axial direction thereof. In addition, the position-limiting member 600 may be a fastener such as a pin or a screw.

Preferably, as shown in fig. 1 to 4, a clamping structure is provided on the pin 100 to prevent the pin 100 from rotating in the circumferential direction when the lock cylinder 200 rotates the latch 300. Thereby achieving reliable rotation between the key cylinder 200 and the latch bolt 300.

Example two

As shown in fig. 1 to 4, 6, a wear member for excavating equipment comprising: a wear resistant root 700 connected to an excavator bucket, and a wear resistant tip 800 nestingly connected to the wear resistant root 700, and a coupling extending through the connection of the wear resistant root 700 and the wear resistant tip 800.

The utility model provides a pair of a wear-resisting part for excavating equipment realizes quick dismantlement, installation and the change between wear-resisting tooth root 700 and the wear-resisting prong 800 through the coupler, in addition, makes the reliability of being connected between wear-resisting tooth root 700 and the wear-resisting prong 800 higher through the coupler, and when the staff is changing wear-resisting prong 800, its factor of safety is higher.

Preferably, as shown in fig. 1 to 4 and 6, when assembling the wear resistant part, the wear resistant tooth root 700 is first installed on the excavator bucket of the excavator, then the wear resistant tooth tip 800 is nested on the wear resistant tooth root 700, then the coupler is inserted into the connection between the wear resistant tooth root 700 and the wear resistant tooth tip 800, and the key cylinder 200 on the coupler is rotated, so that the latch tongue 300 is retracted, and the coupler is further pushed into the connection between the wear resistant tooth root 700 and the wear resistant tooth tip 800, and finally the key cylinder 200 is reversely rotated, so that the latch tongue 300 is extended, and the end of the latch tongue 300 abuts on the wear resistant tooth root 700, and the connection between the coupler and the wear resistant tooth root 700 is locked.

Preferably, as shown in fig. 1 to 4 and 6, the wear-resistant tooth root 700 includes a mounting portion 710, and a first through hole 711 is formed along a thickness direction of the mounting portion 710; the wear-resistant tooth point 800 comprises a mounting cavity part 810 which is connected with the mounting part 710 in a nested mode, and a second through hole 811 is formed in the thickness direction of the mounting cavity part 810, wherein when the wear-resistant tooth root 700 is connected with the wear-resistant tooth point 800, the mounting part 710 is nested with the mounting cavity part 810, the first through hole 711 and the second through hole 811 are coaxially arranged, and a channel formed by the first through hole 711 and the second through hole 811 serves as a mounting channel of the coupler. It is further preferable that a stopper groove hole 712 is provided at one end of the first through hole 711, or a stopper groove hole 712 is provided at both ends of the first through hole 711, wherein the stopper groove hole 712 communicates with the first through hole 711. When the coupler is inserted into the channel formed by the first through hole 711 and the second through hole 811, the end of the lock tongue 300 on the coupler abuts against the hole wall of the limiting groove hole 712, so that the connection between the coupler and the wear-resistant tooth root 700 is locked, the coupler is prevented from sliding out of the first through hole 711 in the working process of a wear part, and the use reliability of the coupler is improved.

Preferably, as shown in fig. 1 to 4 and 6, the clamping structure includes a radial protrusion 140 along the transverse line of the pin 100 on the coupler, and the radial protrusion 140 is matched with a radial groove 812 on the hole wall of the second through hole 811, and through the matching between the radial protrusion 140 and the radial groove 812, the circumferential freedom of the pin 100 in the coupler in the channel formed by the first through hole 711 and the second through hole 811 is defined, so that the relative rotation between the wear-resistant tooth root 700 and the wear-resistant tooth tip 800 is defined, and further, when the lock cylinder 200 is rotated by the rotating tool, the synchronous rotation between the pin 100 and the lock cylinder 200 is avoided, and the reliability of the use of the coupler is improved.

EXAMPLE III

As shown in fig. 5 and 7, the present embodiment is different from the present embodiment in that the clamping structure in the present embodiment includes a clamping hole 150 formed at an end of the pin 100, and the clamping hole 150 and the first slot 110 are respectively located at two ends of the pin 100, when the lock cylinder 200 on the coupler needs to be rotated, the lock cylinder is first inserted into the clamping hole 150 by a fixing tool, and then the rotating tool is inserted into the turning hole 210 of the lock cylinder 200, and the coupling is locked or unlocked by the reverse rotation between the fixing tool and the turning tool, so that the wear-resistant tooth tip 800 is replaced and installed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A coupling, comprising: the pin shaft is respectively provided with a first slotted hole and a second slotted hole along the axis direction and the radial line direction, the first slotted hole is communicated with the second slotted hole, a lock cylinder and a lock tongue are respectively nested in the first slotted hole and the second slotted hole, and the lock cylinder moves to drive the lock tongue to move up and down along the radial line direction.

2. The coupler of claim 1, wherein the lock tongue is moved up and down along a radial line by the circumferential rotation of the lock cylinder.

3. A coupling as claimed in claim 1 or 2, wherein an elastic member is fitted into one end of the latch, and one end of the elastic member is connected to the bottom of the second slot, and the other end of the elastic member is connected to one end of the latch.

4. A coupling according to claim 1 or 2, wherein the key cylinder is connected to the bolt by a male-female fit.

5. A coupler according to claim 4, wherein the key cylinder at the end which engages the latch bolt is provided with a cylindrical projection and the latch bolt at the end which engages the key cylinder is provided with an annular recess, wherein the cylindrical projection of the key cylinder is inserted into the annular recess of the latch bolt.

6. A coupling according to claim 5, wherein the lock cylinder is of a generally cylindrical configuration, and wherein the cylindrical projection is located away from the centre of the end thereof.

7. A coupling according to claim 1, wherein an annular seal is provided on each of the plug and the bolt.

8. The coupler of claim 1, wherein a third slot is further provided along the radial direction of the pin, and the third slot is respectively communicated with the first slot and the second slot, wherein a limit structure is embedded in the third slot and is matched with the lock cylinder.

9. A coupler according to claim 1, wherein the pin is provided with a retaining formation which prevents synchronous circumferential rotation of the pin when the lock core rotates the latch bolt.

10. A wear member for excavating equipment comprising: a wear resistant tooth root for attachment to an excavator bucket, and a wear resistant tooth tip for nesting attachment to the wear resistant tooth root, and a coupling according to any one of claims 1 to 9 extending through the attachment of the wear resistant tooth root to the wear resistant tooth tip.