CN114369975A - Digging chain unit and digging chain - Google Patents
Digging chain unit and digging chain Download PDFInfo
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- CN114369975A CN114369975A CN202111616140.8A CN202111616140A CN114369975A CN 114369975 A CN114369975 A CN 114369975A CN 202111616140 A CN202111616140 A CN 202111616140A CN 114369975 A CN114369975 A CN 114369975A
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- 238000009434 installation Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
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Abstract
The invention discloses an excavating chain unit and an excavating chain, wherein the excavating chain unit comprises a harrow plate body, an intermediate body, a chain pin and a connecting piece, the harrow plate body comprises a first side plate, a second side plate and a back plate, the first side plate and the second side plate are connected through the back plate, the first side plate and the second side plate are opposite and spaced, a first through hole is formed in the first side plate, and a counter bore is formed in the surface, facing the first side plate, of the second side plate; the middle body is arranged between the first side plate and the second side plate, and a second through hole is formed in the middle body; the first through hole, the second through hole and the counter bore are sequentially communicated and matched to form an assembly cavity, the chain pin is arranged in the assembly cavity, and a mounting gap is reserved between the side wall of the chain pin and the cavity wall of the assembly cavity; the connecting piece is arranged on the second side plate and is fixedly matched with the chain pin. Therefore, the chain pin is easy to insert in the assembling cavity, the efficiency is high, the chain pin is not scratched with the first side plate and the second side plate, and the deformation of the harrow plate body is avoided.
Description
Technical Field
The invention relates to the technical field of railway ballast cleaning of railway ballast beds, in particular to an excavating chain unit and an excavating chain.
Background
The clearing car is a large-scale road maintenance machine used for clearing ballast of a track bed on a railway, wherein an excavating chain is one of working devices on the clearing car and is mainly used for excavating the ballast of the track bed. The digging chain is a closed loop chain and is formed by connecting a plurality of harrow plates and a middle body alternately through chain pins. In order to improve the connection stability of the harrow plate and the intermediate body, the chain pin and the chain pin hole on the harrow plate are connected in an interference fit manner. However, the interference fit causes great difficulty in assembling the excavating chain, and the ends of the chain pins are easily scratched no matter the chain pins are pressed into the chain pin holes through knocking or a hydraulic press, so that the harrow plate is deformed. In addition, the assembly and the disassembly of the digging chain are mostly carried out on a construction site, and due to the limited conditions, the hydraulic machine and the assembly tool are difficult to use at any time and can only be manually corresponding, so that the assembly and the disassembly processes are time-consuming and labor-consuming, and the construction efficiency is influenced.
Disclosure of Invention
Therefore, in order to solve the above problems, it is necessary to provide an excavating chain unit and an excavating chain, which can effectively prevent each component of the excavating chain from deforming during the assembling process, and can effectively reduce the assembling difficulty of the excavating chain and improve the assembling efficiency.
A digging chain unit comprising: the harrow plate body comprises a first side plate, a second side plate and a back plate, wherein the first side plate and the second side plate are connected through the back plate, the first side plate and the second side plate are opposite and mutually spaced, the first side plate is provided with a first through hole, and the surface of the second side plate facing the first side plate is provided with a counter bore; the middle body is arranged between the first side plate and the second side plate, and a second through hole is formed in the middle body; the first through hole, the second through hole and the counter bore are sequentially communicated and matched to form an assembly cavity, the chain pin is installed in the assembly cavity, and an installation gap is reserved between the side wall of the chain pin and the cavity wall of the assembly cavity; and the connecting piece is arranged on the second side plate and is fixedly matched with the chain pin.
In the excavating chain unit, the intermediate body is placed between the first side plate and the second side plate, and the first through hole, the second through hole and the counter bore are sequentially communicated to form the assembling cavity, so that when the chain pin is inserted into the assembling cavity, the intermediate body can be connected with the harrow plate main body. When the chain pin is inserted into the assembly cavity, an installation gap is reserved between the side wall of the chain pin and the cavity wall of the assembly cavity, so that the chain pin is in clearance fit with the rake board main body and the intermediate body, the difficulty of inserting the chain pin into the assembly cavity is reduced, the connection efficiency between the intermediate body and the rake board main body is improved, meanwhile, the chain pin cannot be cut and rubbed with the first side plate and the second side plate in the inserting process, and the rake board body is prevented from being deformed. In addition, because the connecting piece has been installed on the second side board, and this connecting piece and chain round pin fixed fit, consequently, can realize its being connected with the second side board when the chain round pin inserts the assembly intracavity for the chain round pin can stably wear to establish in the assembly intracavity, can not break away from the assembly intracavity, has guaranteed the stability of being connected of harrow board body and midbody.
The technical solution is further explained below:
in one embodiment, the chain pin is provided with a blind hole facing the end surface of the connecting piece when being placed in the assembling cavity, the blind hole extends along the axial direction of the chain pin, and the connecting piece is inserted into the blind hole to be connected with the chain pin.
In one embodiment, a connecting hole communicated with the counter bore is formed in the surface, away from the first side plate, of the second side plate, the diameter of the connecting hole is smaller than that of the chain pin, one end of the connecting piece penetrates through the connecting hole and is connected with the chain pin in the assembling cavity, and the other end of the connecting piece can be abutted to the second side plate.
In one embodiment, the connecting piece is a bolt, the bolt comprises a connecting head and a screw rod which are connected, internal threads are arranged on the inner wall of the blind hole, the screw rod is inserted into the connecting hole and the blind hole is in threaded connection with the chain pin, the diameter of the connecting head is larger than that of the connecting hole, and the end face, facing the blind hole, of the connecting head can be abutted to the second side plate.
In one embodiment, the connecting hole comprises a first hole section and a second hole section which are communicated with each other, the second hole section is communicated with the counter bore, the diameter of the connector is larger than that of the second hole section and smaller than that of the first hole section, and the thickness of the connector along the axial direction of the connecting hole is smaller than or equal to the length of the first hole section.
In one embodiment, the chain pin further comprises a wear-resistant sleeve, the wear-resistant sleeve is arranged in the second through hole, and the side wall of the chain pin is in clearance fit with the side wall of the wear-resistant sleeve. 7. The excavating chain unit according to any one of claims 1 to 6 wherein the outer wall of said chain pin is provided with a stopper portion, and the side wall of said first through hole is correspondingly provided with an engaging portion adapted to said stopper portion, said stopper portion being engaged with said engaging portion in a concavo-convex manner.
In one embodiment, the limiting part is a bump, the matching part is a groove, the guiding direction of the groove is parallel to the axial direction of the first through hole, and one end of the groove, which is far away from the second side plate, penetrates through the first side plate along the axial direction of the first through hole;
or two ends of the groove penetrate through the first side plate along the axial direction of the first through hole.
The application also provides a digging chain, which comprises a plurality of digging chain units as above, and a plurality of digging chain units are sequentially connected end to form a closed loop structure.
In one embodiment, for two adjacent digging chain units, the intermediate body is provided with two second through holes arranged at intervals in the axial direction of the digging chain, the first side plate is provided with two first through holes arranged at intervals in the axial direction of the digging chain, the second side plate is provided with two counter bores and two connecting pieces, the counter bores correspond to the first through holes one by one, the number of the chain pins is twice that of the intermediate body, and the intermediate body in the digging chain is respectively connected with two adjacent harrow plate bodies through the two chain pins.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Furthermore, the drawings are not to scale of 1:1, and the relative dimensions of the various elements in the drawings are drawn only by way of example and not necessarily to true scale. In the drawings:
FIG. 1 is a schematic diagram of a digging chain unit according to one embodiment of the present invention;
fig. 2 is a schematic structural view of a rake plate body according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an intermediate in one embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 1;
FIG. 5 is a schematic view of the structure of FIG. 4 with a chain pin inserted therein;
FIG. 6 is a schematic view of a chain pin according to an embodiment of the present invention;
FIG. 7 is a schematic view of a chain pin from another perspective in accordance with an embodiment of the present invention.
The elements in the figure are labeled as follows:
10. a digging chain unit; 110. a harrow plate body; 111. a first side plate; 1111. a first perforation; 1112. a fitting portion; 112. a second side plate; 1121. a counter bore; 1122. connecting holes; 11221. a first bore section; 11222. a second bore section; 113. a back plate; 120. an intermediate; 121. a second perforation; 130. a chain pin; 131. blind holes; 132. a limiting part; 140. a connecting member; 141. a screw; 142. a connector; 150. a wear-resistant sleeve.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1 to 5, an embodiment of the present application provides a digging chain unit 10, including: rake body 110, intermediate body 120, link pin 130 and link 140. The harrow plate body 110 comprises a first side plate 111, a second side plate 112 and a back plate 113. The first side plate 111 and the second side plate 112 are connected by a back plate 113. The first side plate 111 and the second side plate 112 are opposed to and spaced apart from each other. The first side plate 111 is provided with a first through hole 1111. A counter bore 1121 is formed in the surface of the second side plate 112 facing the first side plate 111. The middle body 120 is disposed between the first side plate 111 and the second side plate 112, and the middle body 120 is provided with a second through hole 121. The first through hole 1111, the second through hole 121 and the counter bore 1121 are sequentially communicated and matched to form an assembly cavity. The chain pin 130 is installed in the assembly cavity, and the side wall of the chain pin 130 and the cavity wall of the assembly cavity are provided with installation gaps. The connecting member 140 is disposed on the second side plate 112, and the connecting member 140 is fixedly engaged with the chain pin 130.
In the excavating chain unit 10, the middle body 120 is placed between the first side plate 111 and the second side plate 112, and the first through hole 1111, the second through hole 121 and the counter bore 1121 are sequentially communicated to form the assembly cavity, so that when the chain pin 130 is inserted into the assembly cavity, the connection between the middle body 120 and the harrow plate main body can be realized. Since the installation gap is left between the side wall of the chain pin 130 and the cavity wall of the assembly cavity when the chain pin 130 is inserted into the assembly cavity, it can be seen that the chain pin 130 is in clearance fit with the rake board main body and the intermediate body 120, and the difficulty of inserting the chain pin 130 into the assembly cavity is reduced, so that the connection efficiency between the intermediate body 120 and the rake board main body is improved, meanwhile, the chain pin 130 cannot be scratched with the first side plate 111 and the second side plate 112 in the inserting process, and the rake board body 110 is prevented from being deformed. In addition, because the connecting member 140 is installed on the second side plate 112, and the connecting member 140 is fixedly matched with the chain pin 130, when the chain pin 130 is inserted into the assembling cavity, the connection between the chain pin 130 and the second side plate 112 can be realized, so that the chain pin 130 can stably penetrate through the assembling cavity and cannot be separated from the assembling cavity, and the connection stability between the harrow plate body 110 and the middle body 120 is ensured.
To facilitate the connection of the link 140 to the link pin 130, please refer to fig. 5 and 6, which are based on the above embodiments, and in one embodiment, the end surface of the link pin 130 facing the link 140 is provided with a blind hole 131 when the link pin is disposed in the assembly cavity. And the blind hole 131 extends in the axial direction of the link pin 130. The connecting member 140 is inserted into the blind hole 131 to be connected with the connecting member 140.
It should be noted that the phrase "the connecting member 140 is mounted on the second side plate 112" includes two embodiments that the connecting member 140 is detachably connected to the second side plate 112, or the connecting member 140 is fixedly mounted on the second side plate 112.
Alternatively, the connecting member 140 may be integrally formed on the second side plate 112; alternatively, the connector 140 may be mounted on the second side plate 112 by gluing. In this way, the link member 140 can be stably disposed on the second side plate 112, and the link pin 130 can be prevented from being withdrawn from the assembly cavity after the link member 140 is coupled to the link pin 130.
Specifically, in the present embodiment, the connector 140 is detachably connected to the second side plate 112. As shown in fig. 4 and 5, a plate surface of the second side plate 112 facing away from the first side plate 111 is provided with a connecting hole 1122 communicating with the counterbore 1121. The diameter of the connecting hole 1122 is smaller than the diameter of the link pin 130. One end of the link member 140 passes through the link hole 1122 and is connected to the link pin 130 in the assembly chamber. The other end of the connecting member 140 can abut against the second side plate 112. Thus, when the connecting member 140 is inserted into the connecting hole 1122 to connect with the link pin 130, the link pin 130 is prevented from moving away from the connecting hole 1122, and the link pin 130 is prevented from being withdrawn from the assembly cavity.
In one embodiment, the connecting member 140 is inserted into the connecting hole 1122 to be fixedly connected to the link pin 130 in the assembly cavity. For example, the link 140 is mounted on the link pin 130 by gluing after passing through the connecting hole 1122. Thus, the adhesive can make the connecting member 140 and the chain pin 130 tightly structured, so that the connecting member 140 and the chain pin 130 are not easily separated after being connected, and the connection between the middle body 120 and the harrow plate body 110 is more stable.
Alternatively, in another embodiment, the connecting member 140 may be connected to the link pin 130 by means of a snap or screw connection. Alternatively, the link 140 may be connected to the link pin 130 by other detachable connection means as long as the link 140 and the link pin 130 can be detached.
Specifically, in the present embodiment, as shown in fig. 4 to 6, the connection member 140 is a bolt. The bolt includes a connecting head 142 and a threaded rod 141 connected. The inner wall of the blind hole 131 is provided with internal threads, and the screw 141 is inserted into the connecting hole 1122 and the blind hole 131 to be threadedly connected with the chain pin 130. The diameter of the connection head 142 is larger than that of the connection hole 1122. And the end surface of the connecting head 142 facing the blind hole 131 can abut against the second side plate 112. Thus, after the screw 141 is connected with the chain pin 130, the connector 142 can abut against the plate surface of the second side plate 112, so as to prevent the chain pin 130 from moving toward the direction close to the first side plate 111, and prevent the chain pin 130 from withdrawing from the assembly cavity to separate the harrow plate body 110 from the intermediate body 120.
Optionally, the inner wall of the connecting hole 1122 is also provided with an internal thread, so that the stability of the chain pin 130 when being placed in the first through hole 1111, the second through hole 121 and the counter bore 1121 can be enhanced, thereby improving the stability of the connection between the middle body 120 and the rake body 110.
In order to prevent the connector 142 protruding out of the second side plate 112 and having the connection hole 1122 thereon from colliding with the ground or other equipment, referring to fig. 4 to 6, based on the above embodiments, in one embodiment, the connection hole 1122 includes a first hole section 11221 and a second hole section 11222 that are connected to each other. The second bore section 11222 is in communication with the counterbore 1121. The diameter of connector 142 is greater than the diameter of second bore section 11222 and less than the diameter of first bore section 11221. The thickness of the connector 142 in the axial direction of the connecting hole 1122 is less than or equal to the length of the first hole section 11221. Thus, when the bolt is inserted into the first hole 11221 and the second hole 11222 to be screwed with the pin 130, the connecting head 142 of the bolt is located in the first hole 11221 and abuts against the bottom wall of the first hole 11221.
Specifically, the connecting head 142 has a cylindrical structure.
Specifically, the connecting head 142 is located at the end of the screw rod 141, and the length of the screw rod 141 is less than or equal to the sum of the length of the second hole section 11222 and the length of the blind hole 131. Wherein the inner wall of the second bore section 11222 is provided with internal threads.
To increase the service life of the center body 120, referring to fig. 4 and 5, in addition to the above-described embodiments, in one embodiment, the digging chain unit 10 further includes a wear sleeve 150. The wear-resistant sleeve 150 is disposed in the second through hole 121, and the side wall of the chain pin 130 is in clearance fit with the side wall of the wear-resistant sleeve 150.
In order to prevent the chain pin 130 from rotating around its central axis in the first through hole 1111, the second through hole 121 and the counter bore 1121, referring to fig. 4 and 5, on the basis of the above embodiments, in an embodiment, the outer wall of the chain pin 130 is provided with a limiting portion 132. The sidewall of the first through hole 1111 is correspondingly provided with a matching portion 1112 matching with the position-limiting portion 132, and the position-limiting portion 132 is matched with the matching portion 1112 in a concave-convex manner. In this manner, the rotation of the link pin 130 in the first through hole 1111 is restricted.
Specifically, as shown in fig. 4 and 5, in the present embodiment, the position-limiting portion 132 is a protrusion, and the matching portion 1112 is a groove. And the guide direction of the groove is parallel to the axial direction of the first penetration hole 1111. One end of the groove, which is away from the second side plate 112, penetrates through the first side plate 111 in the axial direction of the first through hole 1111. Thus, when the chain pin 130 is inserted into the first through hole 1111, the protrusion can slide into the groove along the guiding direction of the groove, so that the protrusion can be locked in the groove, and the chain pin 130 is prevented from rotating in the first through hole 1111.
Alternatively, in another embodiment, both ends of the groove penetrate the first side plate 111 in the axial direction of the first penetration 1111. Thus, the bump can be clamped in the groove.
Optionally, in another embodiment, the position-limiting portion 132 is a groove, and the matching portion 1112 is a bump. At this time, the guide direction of the groove extends in the axial direction of the link pin 130, and the groove penetrates the link pin 130 in the guide direction thereof.
On the basis of the above embodiments, in an embodiment, a plurality of the limiting portions 132 and the matching portions 1112 are provided. The plurality of stopper portions 132 are provided at intervals in the circumferential direction of the link pin 130. The plurality of fitting portions 1112 are provided at intervals in the circumferential direction of the first penetration 1111. The position-limiting portions 132 correspond to the engaging portions 1112 one by one.
Specifically, in the present embodiment, when connecting the rake plate body 110 and the middle body 120, the middle body 120 is placed between the first side plate 111 and the second side plate 112, and the first through hole 1111 and the second through hole 121 and the blind hole 131 are coaxially arranged to form an assembly cavity. After the limiting portion 132 of the chain pin 130 is aligned with the matching portion 1112 in the first through hole 1111, the end portion of the chain pin 130 having the blind hole 131 is inserted into the first through hole 1111, the second through hole 121, and the counter bore 1121. In this way, the middle body 120 can be connected to the rake plate body 110, and at the same time, the chain pin 130 can be prevented from rotating in the first through hole 1111, the second through hole 121 and the counter bore 1121, so as to avoid affecting the stability of the chain pin 130 inserted into the rake plate body 110 and the middle body 120. Subsequently, one end of the connecting member 140 is inserted into the connecting hole 1122 to connect the connecting member 140 with the link pin 130, and the other end of the connecting member 140 is abutted against the second side plate 112, so that the link pin 130 is prevented from moving in the axial direction of the first through hole 1111 in the assembly cavity, and the link pin 130 is prevented from exiting from the first through hole 1111 and the second through hole 121 to cause the middle body 120 to be connected with the harrow plate body 110 without stability.
In an embodiment, the diameters of the first through hole 1111, the second through hole 121 and the counter bore 1121 are all larger than the diameter of the chain pin 130, so that the chain pin 130 is in clearance fit when being inserted into the first through hole 1111, the second through hole 121 and the counter bore 1121, thereby preventing the chain pin 130 and the rake body 110 from being damaged by interference fit between the conventional chain pin 130 and the rake body 110. In addition, the clearance fit also makes the assembly process comparatively simple, and assembly efficiency can be improved.
The present application also provides a digging chain comprising a plurality of said digging chain units 10. A plurality of digging chain units 10 are connected end to end in sequence to form a closed loop structure.
On the basis of the above embodiment, in an embodiment, for two adjacently arranged digging chain units 10, the middle body 120 is provided with two second through holes 121 arranged oppositely and at intervals along the axial direction of the digging chain. Two first through holes 1111 are oppositely arranged at intervals on the first side plate 111 along the axial direction of the digging chain, and two counter bores 1121 and two connecting pieces 140 are arranged on the second side plate 112. The counter bores 1121 correspond one-to-one to the first through holes 1111. The number of the link pins 130 is twice the number of the intermediate bodies 120. In the digging chain, the intermediate body 120 is connected to two adjacent drag plate bodies 110 by two chain pins 130, respectively.
As shown in fig. 1 to 4, two adjacent rake plate bodies 110 are connected by an intermediate body 120. Therefore, the middle body 120 is provided with two second through holes 121, and the two second through holes 121 are oppositely arranged at intervals along the length direction of the digging chain. Correspondingly, two adjacent intermediate bodies 120 are connected by the rake body 110. Therefore, the first side plate 111 of the rake body 110 is provided with two first through holes 1111, the two first through holes 1111 are oppositely arranged along the length direction of the digging chain at intervals, the second side plate 112 is provided with two counter bores 1121 and two connecting pieces 140, wherein the counter bores 1121 correspond to the first through holes 1111 one by one. For two adjacent digging chain units 10, two ends of the middle body 120 between the two rake body 110 are respectively inserted into the two adjacent rake body 110, so that the two second through holes 121 on the middle body 120 respectively correspond to the first through holes 1111 on the two rake body 110, and the two chain pins 130 are respectively inserted into the corresponding first through holes 1111 and second through holes 121 to realize the connection between the middle body 120 and the two adjacent rake body 110.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, 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 an intermediate. 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.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An excavating chain unit comprising:
the harrow plate body comprises a first side plate, a second side plate and a back plate, wherein the first side plate and the second side plate are connected through the back plate, the first side plate and the second side plate are opposite and mutually spaced, the first side plate is provided with a first through hole, and the surface of the second side plate facing the first side plate is provided with a counter bore;
the middle body is arranged between the first side plate and the second side plate, and a second through hole is formed in the middle body;
the first through hole, the second through hole and the counter bore are sequentially communicated and matched to form an assembly cavity, the chain pin is installed in the assembly cavity, and an installation gap is reserved between the side wall of the chain pin and the cavity wall of the assembly cavity; and
and the connecting piece is arranged on the second side plate and is fixedly matched with the chain pin.
2. The excavating chain unit according to claim 1 wherein said chain pin is provided with a blind hole toward an end face of said connecting member when placed in said fitting cavity, and said blind hole extends in an axial direction of said chain pin, and said connecting member is inserted into said blind hole to be connected to said chain pin.
3. The excavating chain unit of claim 2 wherein a face of said second side plate facing away from said first side plate is provided with a connecting hole communicating with said counterbore, said connecting hole having a diameter smaller than a diameter of said link pin, one end of said connecting member extending through said connecting hole and being connected to said link pin in said assembly cavity, the other end of said connecting member being capable of abutting said second side plate.
4. The excavating chain unit according to claim 3 wherein the connecting member is a bolt, the bolt includes a connecting head and a screw rod connected with each other, the inner wall of the blind hole is provided with internal threads, the screw rod is inserted into the connecting hole and the blind hole is in threaded connection with the chain pin, the diameter of the connecting head is larger than that of the connecting hole, and the end face of the connecting head facing the blind hole can abut against the second side plate.
5. The excavating chain unit of claim 4 wherein said connecting hole includes a first hole segment and a second hole segment in communication, said second hole segment being in communication with said counterbore, said connector having a diameter greater than the diameter of said second hole segment and less than the diameter of said first hole segment, said connector having a thickness along the axial direction of said connecting hole less than or equal to the length of said first hole segment.
6. The excavating chain unit of claim 1 further comprising a wear sleeve disposed within said second through hole with the side walls of said chain pin in clearance fit with the side walls of said wear sleeve.
7. The excavating chain unit according to any one of claims 1 to 6 wherein the outer wall of said chain pin is provided with a stopper portion, and the side wall of said first through hole is correspondingly provided with an engaging portion adapted to said stopper portion, said stopper portion being engaged with said engaging portion in a concavo-convex manner.
8. The excavating chain unit of claim 7 wherein said limiting portion is a projection, said engaging portion is a groove, and the direction of said groove is parallel to the axial direction of said first aperture, and the end of said groove remote from said second side plate extends through said first side plate in the axial direction of said first aperture;
or two ends of the groove penetrate through the first side plate along the axial direction of the first through hole.
9. A digging chain comprising a plurality of digging chain units according to any one of claims 1 to 8 connected end to end in sequence to form a closed loop structure.
10. The excavating chain according to claim 9 wherein for two of said excavating chain units adjacently disposed, said intermediate body is provided with two of said second through holes oppositely spaced in an axial direction of said excavating chain, said first through holes oppositely spaced in an axial direction of said excavating chain is provided with two of said counter bores and two of said connecting members on said first side plate, said counter bores correspond to said first through holes one by one, said number of said chain pins is twice as large as that of said intermediate body, and said intermediate body is connected to two of said drag plate bodies adjacently by two of said chain pins in said excavating chain, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616140.8A CN114369975B (en) | 2021-12-27 | 2021-12-27 | Excavating chain unit and excavating chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616140.8A CN114369975B (en) | 2021-12-27 | 2021-12-27 | Excavating chain unit and excavating chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114369975A true CN114369975A (en) | 2022-04-19 |
| CN114369975B CN114369975B (en) | 2024-10-01 |
Family
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| CN202111616140.8A Active CN114369975B (en) | 2021-12-27 | 2021-12-27 | Excavating chain unit and excavating chain |
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| CN111806584A (en) * | 2020-08-12 | 2020-10-23 | 索特传动设备有限公司 | Locking unit, crawler and walking device |
| CN212001356U (en) * | 2020-01-17 | 2020-11-24 | 徐州徐工挖掘机械有限公司 | Shaft sleeve system with embedded pin type anti-channeling sleeve and excavator |
| CN112912331A (en) * | 2018-10-30 | 2021-06-04 | 因温特奥股份公司 | Conveyor chain for a pallet belt of a moving walkway of smaller overall height |
| CN113650689A (en) * | 2021-09-17 | 2021-11-16 | 淮南联合大学 | Cycloidal profile engaging track assembly |
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| EP2631361A2 (en) * | 2012-02-22 | 2013-08-28 | K&K Maschinenentwicklungs GmbH & Co. KG | Excavation chain for excavating track bed material |
| CN203363002U (en) * | 2013-06-21 | 2013-12-25 | 施生面 | Caterpillar track capable of injecting lubricating oil |
| CN105442397A (en) * | 2015-12-17 | 2016-03-30 | 南车戚墅堰机车车辆工艺研究所有限公司 | Screen cleaner digger chain |
| CN106592348A (en) * | 2016-12-30 | 2017-04-26 | 常州市瑞泰工程机械有限公司 | Digger chain applicable to roadway ballast cleaning machine |
| CN112912331A (en) * | 2018-10-30 | 2021-06-04 | 因温特奥股份公司 | Conveyor chain for a pallet belt of a moving walkway of smaller overall height |
| CN209739971U (en) * | 2019-03-23 | 2019-12-06 | 南通拓新自动化设备科技有限公司 | Detachable conveying chain |
| CN211057517U (en) * | 2019-09-25 | 2020-07-21 | 金鹰重型工程机械有限公司 | Digging chain |
| CN110725167A (en) * | 2019-11-19 | 2020-01-24 | 常州市瑞泰工程机械有限公司 | Digging chain unit, digging chain and side slope screen cleaning vehicle |
| CN212001356U (en) * | 2020-01-17 | 2020-11-24 | 徐州徐工挖掘机械有限公司 | Shaft sleeve system with embedded pin type anti-channeling sleeve and excavator |
| CN111806584A (en) * | 2020-08-12 | 2020-10-23 | 索特传动设备有限公司 | Locking unit, crawler and walking device |
| CN113650689A (en) * | 2021-09-17 | 2021-11-16 | 淮南联合大学 | Cycloidal profile engaging track assembly |
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| CN114369975B (en) | 2024-10-01 |
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