CN113977515A - Node withdrawing device and node withdrawing method of vertical traction rod - Google Patents
Node withdrawing device and node withdrawing method of vertical traction rod Download PDFInfo
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- CN113977515A CN113977515A CN202111136688.2A CN202111136688A CN113977515A CN 113977515 A CN113977515 A CN 113977515A CN 202111136688 A CN202111136688 A CN 202111136688A CN 113977515 A CN113977515 A CN 113977515A
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- longitudinal
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- rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
Abstract
The invention discloses a node withdrawing device of a vertical traction rod, which comprises a bottom plate, a support assembly arranged at the upper end of the bottom plate and a withdrawing assembly arranged on the support assembly, wherein the withdrawing assembly comprises a longitudinal withdrawing unit for withdrawing a rubber node in a longitudinal connecting end of the vertical traction rod and a transverse withdrawing unit for withdrawing the rubber node in a transverse connecting end; the vertical draw bar is arranged on the supporting component, and the rubber nodes at the two ends of the vertical draw bar are respectively withdrawn through the longitudinal withdrawing unit and the transverse withdrawing unit, so that the technical problems that the working efficiency is low and the inner hole of the rod body is easily damaged when a manual handheld withdrawing tool is used for withdrawing the rubber nodes can be solved.
Description
Technical Field
The invention relates to a node withdrawing device of a vertical traction rod, belongs to the technical field of processing equipment of the vertical traction rod, and is used for withdrawing rubber nodes in the vertical traction rod from a rod body of the vertical traction rod. The invention also relates to a node withdrawing method of the vertical traction rod.
Background
Vertical drawbar is commonly used in bogie construction of railway vehicles, primarily for coupling and shock absorption. As shown in fig. 1-3, a rubber node 101 is usually press-fitted into a metal inner hole 1021 of a vertical drawbar rod body to cushion and damp the rail vehicle, thereby improving the stability of the vehicle body and the comfort of passengers. As shown in fig. 1, there is a vertical traction rod comprising a transverse traction end 1A and a longitudinal traction end 1B, wherein the core axis of the rubber node 101 pressed in the transverse traction end 1A is perpendicular to the core axis of the rubber node 101 pressed in the longitudinal traction end 1B.
In the running process of a vehicle, the rubber nodes can be damaged in a fatigue mode, and therefore after the rubber nodes are damaged in the fatigue mode, the rubber nodes pressed in the inner holes of the vertical traction rods need to be withdrawn, and then new rubber nodes need to be pressed again. In the prior art, the following problems often exist in the vertical traction rods which are vertical to each other and related to the mandrels of the rubber nodes at the two ends when the rubber nodes are withdrawn:
1. the withdrawing of the rubber node in the traction rod is usually carried out by manually holding a withdrawing tool, the working efficiency is low, and the damage to the inner hole of the rod body in the traction rod is easily caused by the problems of irregular operation, uneven force application and the like.
2. In the prior art, node withdrawing devices of the traction rods are mostly used for the traction rods with rubber nodes at two ends arranged in parallel, and the node withdrawing devices of the vertical traction rods which are vertically arranged aiming at the rubber nodes at the two ends are not provided.
Disclosure of Invention
The node withdrawing device of the vertical traction rod provided by the invention can withdraw the rubber nodes which are arranged in the transverse traction end and the longitudinal traction end of the vertical traction rod and are perpendicular to each other, and simultaneously, the technical problems that the working efficiency is low and the inner hole of the rod body is easily damaged when a withdrawing tool is manually held to withdraw the rubber nodes are solved. The invention also provides a node withdrawing method of the vertical traction rod.
In order to achieve the purpose, the invention provides the following technical scheme: the node withdrawing device of the vertical traction rod comprises a bottom plate, a supporting assembly arranged at the upper end of the bottom plate and a withdrawing assembly arranged on the supporting assembly, wherein the withdrawing assembly comprises a longitudinal withdrawing unit for withdrawing rubber nodes in the longitudinal connecting end of the vertical traction rod and a transverse withdrawing unit for withdrawing rubber nodes in the transverse connecting end; the vertical traction rod is arranged on the supporting component, and the rubber nodes at the two ends of the vertical traction rod are respectively withdrawn through the longitudinal withdrawing unit and the transverse withdrawing unit.
Preferably, the longitudinal withdrawing unit comprises a longitudinal receiving cylinder and a longitudinal withdrawing pressure head; the lower end of the longitudinal receiving cylinder is provided with a first driving part, the longitudinal receiving cylinder is fixedly connected to the power output end of the first driving part, and the first driving part can drive the longitudinal receiving cylinder to extend up and down; the supporting assembly is provided with a circular through hole and comprises a limiting supporting cylinder which is coaxially communicated with the circular through hole and is positioned above the circular through hole, the aperture of the lower end of the limiting supporting cylinder is not smaller than that of the circular through hole, the aperture of the circular through hole is not smaller than the outer diameter of the upper end of the longitudinal receiving cylinder, and the longitudinal receiving cylinder can extend upwards into the inner side of the lower part of the limiting supporting cylinder from the circular through hole to receive the withdrawn rubber node; the longitudinal connecting end of the vertical traction rod is arranged at the upper end of the limiting support cylinder, the longitudinal withdrawing pressure head is arranged at the upper end of the longitudinal connecting end, and the longitudinal withdrawing pressure head can withdraw the rubber node in the longitudinal connecting end downwards from the inner hole of the rod body and is supported by the longitudinal receiving cylinder.
Preferably, the support assembly comprises a limit support seat which is positioned on the side of the limit support cylinder and has the same central line with the limit support cylinder, and the transverse connecting end of the vertical traction rod is arranged at the upper end of the limit support seat; the transverse withdrawing unit comprises a transverse withdrawing pressure head and a transverse receiving barrel, when the rubber node of the transverse connecting end is subjected to node withdrawing operation, the transverse withdrawing pressure head and the transverse receiving barrel are positioned on two sides of the horizontal direction of the mandrel of the rubber node of the transverse connecting end, and the transverse withdrawing pressure head can withdraw the rubber node in the transverse connecting end from the inner hole of the rod body and is supported by the transverse receiving barrel.
Preferably, the longitudinal receiving cylinder is provided with a first accommodating hole with an upward opening, the inner diameter of the first accommodating hole is larger than the outer diameter of the lower end face of the axis of the mandrel, and the inner diameter of the first accommodating hole is smaller than the outer diameter of the rubber node outer sleeve and is not smaller than the inner diameter of the rubber node outer sleeve; when the rubber node is received, the lower end face of the outer sleeve of the rubber node is in contact with the upper end face of the longitudinal receiving cylinder, and the lower portion of the axis of the lower end mandrel of the rubber node and the flat square are located in the first accommodating hole.
Preferably, the upper end face of the limiting support cylinder sinks to form a limiting step I for positioning the longitudinal connecting end of the vertical traction rod; the longitudinal withdrawing pressure head is provided with a second accommodating hole, the outer diameter of the lower end face of the longitudinal withdrawing pressure head is smaller than the bore diameter of the inner bore of the rod body, and the inner diameter of the lower end face of the longitudinal withdrawing pressure head is larger than the outer diameter of the upper end face of the shaft center of the rubber node mandrel and is not smaller than the inner diameter of the rubber node outer sleeve; the upper end part of the longitudinal withdrawing pressure head protrudes towards the circumferential outer side to form a limiting convex edge, and the height of the barrel part of the longitudinal withdrawing pressure head, which is positioned at the lower end of the limiting convex edge, is greater than the height of the inner hole of the rod body; when moving back the node operation, the lower terminal surface that vertically withdraws from the pressure head contacts with the overcoat up end of rubber node, leaves the body of rod hole back as the rubber node, and the pressure head is spacing on the up end of longitudinal joint end through spacing bead to vertical withdrawal from.
Preferably, the transverse receiving cylinder comprises a receiving through hole, the length of the transverse receiving cylinder is greater than that of the rubber node mandrel, and after the rubber node is withdrawn by the transverse withdrawing pressure head, the rubber node integrally withdraws into the receiving through hole of the transverse receiving cylinder; a notch facilitating the mechanical arm to take out the withdrawn rubber node is axially arranged at one end of the transverse receiving cylinder facing the vertical traction rod, a transverse pressure output device II capable of driving the transverse receiving cylinder to horizontally stretch is arranged at one end of the transverse receiving cylinder far away from the vertical traction rod, and the transverse receiving cylinder is fixedly connected to the power output end of the transverse pressure output device II; one end of the transverse withdrawing pressure head, which is far away from the vertical traction rod, is provided with a transverse pressure output device I which can drive the transverse withdrawing pressure head to horizontally stretch, and the transverse withdrawing pressure head is fixedly connected to the power output end of the transverse pressure output device I.
Preferably, the support assembly comprises a side support plate positioned at the upper end of the bottom plate and an upper support plate fixedly connected to the upper end of the side support plate, the bottom plate is provided with a first sliding groove for the side support plate to horizontally slide, and the length of the first sliding groove is smaller than that of the bottom plate so as to prevent the side support plate from sliding out of the bottom plate; the circular through hole is arranged on the upper supporting plate, and the limiting supporting cylinder is arranged at the upper end of the upper supporting plate and surrounds the outer side of the circular through hole; the upper supporting plate is also provided with a second sliding groove which is concentric with the circular through hole, the limiting supporting seat is arranged on the second sliding groove in a sliding manner, and the center distance between the limiting supporting cylinder and the limiting supporting seat can be adjusted by horizontally sliding the limiting supporting seat on the second sliding groove; the upper end face of the limiting support seat is sunk to form a limiting step II for positioning the transverse connecting end of the vertical traction rod.
Preferably, a connecting plate which is connected to the inner wall of the side supporting plate in a sliding manner is arranged below the upper supporting plate, and a connecting through hole through which a power output rod of the driving piece I passes is arranged on the connecting plate; the connecting plate can drive the longitudinal receiving cylinder to slide to the lower side of the circular through hole, and the rubber node at the vertical connecting end drives the longitudinal receiving cylinder and the rubber node to slide out from the lower side of the upper supporting plate after retreating into the longitudinal receiving cylinder so that the manipulator can take out the retreated rubber node.
Preferably, the connecting plate comprises a side connecting plate parallel to the side supporting plate and a lower connecting plate vertically arranged at the lower end of the side connecting plate, the connecting through hole is arranged on the lower connecting plate, the inner wall of the side supporting plate is provided with a third sliding groove, and the side connecting plate is provided with a sliding block matched with the three phases of the sliding grooves; the outer end of the side supporting plate inner wall located at the third sliding groove is provided with a first stop block located above the side connecting plate, and one end, far away from the first stop block, of the side connecting plate is provided with a second stop block which can stop the first stop block to prevent the side connecting plate from falling out of the side supporting plate.
The node withdrawing method of the vertical traction rod adopts the node withdrawing device to carry out node withdrawing operation, and the node withdrawing step comprises the following steps:
the first step of driving the longitudinal receiving cylinder to move upwards and extend upwards from the circular through hole to the inner side of the lower part of the limiting supporting cylinder through the first driving part when the longitudinal receiving cylinder stops moving towards the inner side of the side supporting plate when being positioned under the circular through hole of the upper supporting plate through a control program;
secondly, the position of the limiting support seat in the first sliding groove on the upper support plate is adjusted in a sliding mode, so that the center distance between the limiting support seat and the limiting support cylinder is consistent with the center distance of the rod body of the withdrawn vertical traction rod;
thirdly, a vertical traction rod needing to be subjected to node withdrawal is arranged on the support assembly, wherein the longitudinal connecting end is positioned on a first limiting step at the upper end of the limiting support cylinder, and the transverse connecting end is positioned on a second limiting step at the upper end of the limiting support seat;
fourthly, the longitudinal withdrawing pressure head is arranged on the longitudinal connecting end, and the lower end face of the longitudinal withdrawing pressure head is in contact with the upper end face of the outer sleeve of the rubber node;
fifthly, the lateral supporting plates are controlled to move towards the first lateral pressure output device and the second lateral pressure output device on the bottom plate through a program, and the lateral supporting plates stop moving when the central line of a rubber node in the lateral connecting end is superposed with the central lines of the lateral withdrawing pressure head and the lateral receiving cylinder;
sixthly, moving the transverse withdrawing pressure head towards the transverse connecting end of the vertical traction rod through the driving piece III, and stopping moving when the end surface of one side, close to the transverse connecting end, of the transverse withdrawing pressure head is in contact with the upper end surface of the outer sleeve, close to one side, of the transverse withdrawing pressure head, of the rubber node; the transverse receiving barrel moves towards the transverse connecting end of the vertical traction rod through the driving piece II, and the transverse receiving barrel stops moving when the end face of one side, close to the transverse connecting end, of the transverse receiving barrel is in contact with the end face of the rod body;
seventhly, controlling the longitudinal pressure output device to downwards press the upper end face of the longitudinal withdrawing pressure head through a program, and beginning to withdraw the rubber node in the longitudinal connecting end;
(eighth) after the rubber node in the longitudinal connecting end withdraws and is received by the longitudinal receiving cylinder, keeping the pressure of the longitudinal pressure output device unchanged, and simultaneously controlling the transverse pressure output device to enable a transverse withdrawing pressure head to apply pressure to the rubber node in the transverse connecting end to start withdrawing the rubber node in the transverse connecting end, wherein the transverse receiving cylinder receives the withdrawn rubber node;
(ninth), the longitudinal pressure output device, the transverse pressure output device I and the transverse pressure output device II are controlled by a program to move back, the side supporting plates are controlled to move to the limit positions far away from the transverse pressure output device, and then the connecting plates slide out of the side supporting plates from the lower sides of the side supporting plates;
and (ten) clamping the rubber nodes which are positioned on the transverse receiving cylinder and withdrawn from the longitudinal receiving cylinder through a manipulator, placing the rubber nodes in a scrapped node temporary storage area, completing withdrawal of the rubber nodes, and waiting for withdrawal of the rubber nodes in the next vertical traction rod.
The invention has the technical effects that:
1. according to the invention, the longitudinal withdrawing unit and the transverse withdrawing unit are arranged to withdraw the rubber nodes of the longitudinal connecting end and the transverse connecting end of the vertical traction rod respectively, so that the rubber nodes at two ends of the vertical traction rod which are vertically arranged can be withdrawn, and the technical problems that the working efficiency is low and the inner hole of the rod body is easily damaged when a manual handheld withdrawing tool is used for withdrawing the rubber nodes can be solved.
2. According to the invention, the longitudinal receiving cylinder is arranged below the upper supporting plate, the limiting supporting cylinder and the longitudinal withdrawing pressure head are arranged above the upper supporting plate, so that the rubber node at the longitudinal connecting end of the vertical traction rod can be withdrawn into the longitudinal receiving cylinder, then slide out from the inner side of the side supporting plate through the connecting plate, and then the withdrawn rubber node is taken out.
3. The invention is provided with a transverse receiving cylinder and a transverse withdrawing pressure head, and the transverse receiving cylinder is provided with a notch, when a rubber node in the transverse connecting end of the vertical traction rod is withdrawn, the withdrawn rubber node is received by the transverse receiving cylinder, and then the rubber node is taken out from the notch by a manipulator.
4. According to the invention, the second sliding groove is formed in the upper supporting plate, and the limiting supporting seat can slide in the second sliding groove, so that the center distance between the limiting supporting cylinder and the limiting supporting seat is adjusted, and the rubber nodes of the vertical traction rods with different center distances can be withdrawn.
Drawings
Fig. 1 is a schematic structural view of a vertical drawbar.
Fig. 2 is a schematic structural view of a rod body in a vertical traction rod.
Fig. 3 is a schematic structural diagram of a rubber node in a vertical drawbar.
Fig. 4 is a schematic view of the overall structure of the node removing device of the vertical traction rod. (Barrier I and Barrier II are not shown)
Fig. 5 is a schematic structural view of the node removing device of the vertical traction rod when the node removing device is not slid into the pressure output device. (Barrier I and Barrier II are not shown)
Fig. 6 is a left side view of the structure of fig. 4.
Fig. 7 is a schematic top view of the structure of fig. 4.
Fig. 8 is a sectional view in the direction a-a of fig. 7.
FIG. 9 is a schematic view of the rubber node of FIG. 8 as it exits onto the longitudinal receiving cylinder.
Fig. 10 is an exploded view of the longitudinal withdrawing ram, the vertical draw bar, the limiting support cylinder, the upper support plate and the longitudinal receiving cylinder.
The reference numerals include: 1. a vertical draw bar; 1A, a longitudinal connecting end; 1B, a transverse connecting end; 101. rubber nodes; 1011. flat square; 1012. an axis; 1013. a jacket; 1014. a rubber body; 102. a rod body; 1021. an inner bore; 2. a base plate; 201. a first sliding chute; 3. side supporting plates; 301. a third chute; 302. a first blocking block; 4. an upper support plate; 401. a second chute; 402. a circular through hole; 403. a card slot; 5. a longitudinal receiving cylinder; 501. the first accommodating hole; 502. a power take-off rod; 503. connecting the bosses; 6. longitudinally withdrawing the press head; 601. a second accommodating hole; 602. a limiting convex rib; 603. a barrel portion; 7. a limiting support cylinder; 701. a first limiting step; 8. a limiting support seat; 901. a second limiting step; 9. transversely withdrawing the pressing head; 10. a transverse receiving cylinder; 1102. a notch; 1201. a side connection plate; 1202. a slider; 1203. a second blocking block; 1204. a lower connecting plate; 1205. reinforcing ribs; 1206. a fourth chute; 13. a longitudinal pressure output device; 14. a transverse pressure output device I; 1401. a first flange plate; 15. a second transverse pressure output device; 1501. a second flange plate; 16. and (7) fixing the plate.
Detailed Description
The invention is described in further detail below with reference to figures 1-10.
A node withdrawing device of a vertical traction rod is shown in figures 1-3, wherein the vertical traction rod 1 comprises a rod body and a rubber node 101, two inner holes 1021 are arranged on two sides of the rod body, the rubber node 101 is uniformly arranged in the two inner holes 1021, the rubber node 101 comprises an outer sleeve 1013 and a mandrel positioned in the outer sleeve 1013, a rubber body 1014 is vulcanized between the outer sleeve 1013 and the mandrel, the mandrel comprises two flat squares 1011 of the mandrel, and the part of the mandrel positioned between the two flat squares 1011 is the axis 1012 of the mandrel; as shown in fig. 1, the mandrels of two rubber nodes 101 of the vertical traction rod 1 in the scheme are perpendicular to each other, and the vertical traction rod 1 comprises a longitudinal connecting end 1A and a transverse connecting end 1B.
The node withdrawing device of the vertical traction rod 1 comprises a bottom plate 2, a supporting assembly arranged at the upper end of the bottom plate 2 and a withdrawing assembly arranged on the supporting assembly, wherein the withdrawing assembly comprises a longitudinal withdrawing unit for withdrawing the rubber node 101 in the longitudinal connecting end 1A of the vertical traction rod 1 and a transverse withdrawing unit for withdrawing the rubber node 101 in the transverse connecting end 1B; the vertical traction rod 1 is arranged on the supporting assembly, and the rubber nodes 101 at two ends of the vertical traction rod 1 are respectively withdrawn through the longitudinal withdrawing unit and the transverse withdrawing unit. Meanwhile, the technical problems that when the manual handheld withdrawing tool is used for withdrawing the rubber node 101, the working efficiency is low, and the inner hole of the rod body is easily damaged can be solved.
Wherein, as shown in fig. 8-10, the longitudinal withdrawing unit comprises a longitudinal receiving cylinder 5 and a longitudinal withdrawing pressure head 6; the lower end of the longitudinal receiving cylinder 5 is provided with a first driving part, the longitudinal receiving cylinder 5 is fixedly connected to the power output end of the first driving part, and the first driving part can drive the longitudinal receiving cylinder 5 to extend up and down; as shown in fig. 8, the lower end of the longitudinal receiving cylinder 5 is provided with a groove, the driving member one comprises a power output rod 502, the upper end of the power output rod 502 is a power output end, the upper end of the power output rod 502 is provided with a connecting boss 503 capable of limiting the groove of the longitudinal receiving cylinder 5, and the longitudinal receiving cylinder 5 is fixed on the upper end of the power output rod 502 through the connecting boss 503. The supporting assembly is provided with a circular through hole 402 and comprises a limiting supporting cylinder 7 which is coaxially communicated with the circular through hole 402 and is positioned above the circular through hole 402, and the aperture of the lower end of the limiting supporting cylinder 7 is not smaller than that of the circular through hole 402, so that the limiting supporting cylinder 7 is coaxial with the circular through hole 402 and is positioned on the upper peripheral side of the circular through hole 402; the aperture of the circular through hole 402 is not smaller than the outer diameter of the upper end of the longitudinal receiving cylinder 5, so that the longitudinal receiving cylinder 5 can extend upwards into the circular through hole 402, and further the longitudinal receiving cylinder 5 can extend upwards into the inner side of the lower part of the limiting supporting cylinder 7 from the circular through hole 402 to support the withdrawn rubber node 101; the longitudinal connecting end 1A of the vertical traction rod 1 is arranged at the upper end of the limiting support barrel 7, the longitudinal withdrawing pressure head 6 is arranged at the upper end of the longitudinal connecting end 1A, and the longitudinal withdrawing pressure head 6 can withdraw the rubber node 101 in the longitudinal connecting end 1A downwards from the inner hole 1021 of the rod body 102 and is supported by the longitudinal receiving barrel 5.
The longitudinal receiving cylinder 5 is provided with a first accommodating hole 501 with an upward opening, the inner diameter of the first accommodating hole 501 is larger than the outer diameter of the lower end face of the mandrel axis 1012, and the inner hole 1021 of the rod body is prevented from being scratched due to interference between the longitudinal receiving cylinder 5 and the mandrel axis 1012 in the withdrawing process; the inner diameter of the first accommodating hole 501 is smaller than the outer diameter of the casing 1013 of the rubber node 101 and not smaller than the inner diameter of the casing 1013 of the rubber node 101, so that when the rubber node 101 is received, the lower end surface of the casing 1013 of the rubber node 101 contacts with the upper end surface of the longitudinal receiving cylinder 5, and the lower part of the axis 1012 of the lower end core shaft of the rubber node 101 and the flat square 1011 are positioned in the first accommodating hole 501, as shown in fig. 9.
The upper end face of the limiting support barrel 7 sinks to form a limiting step I701 for positioning the longitudinal connecting end 1A of the vertical traction rod 1, and the limiting step I701 in the embodiment is a U-shaped step matched with the rod body shape of the longitudinal connecting end 1A shown in figure 10, so that the vertical traction rod 1 can be stably placed on the limiting support barrel 7; the longitudinal withdrawing pressure head 6 is provided with a second accommodating hole 601, and the outer diameter of the lower end face of the longitudinal withdrawing pressure head 6 is smaller than the bore 1021 of the rod body 102, so that when the longitudinal withdrawing pressure head 6 applies pressure to the vertical traction rod 1, the lower end face of the longitudinal withdrawing pressure head 6 is in contact with the upper end face of the outer sleeve 1013 of the rubber node 101 and withdraws the rubber node 101 downwards, and the lower end face of the longitudinal withdrawing pressure head 6 is prevented from being in contact with the upper end face of the rod body of the longitudinal connecting end 1A. The inner diameter of the lower end face of the longitudinal withdrawing pressure head 6 is larger than the outer diameter of the upper end face of the mandrel axis 1012 of the rubber node 101 and is not smaller than the inner diameter of the outer sleeve 1013 of the rubber node 101, so that the lower end face of the longitudinal withdrawing pressure head 6 is in contact with the upper end face of the outer sleeve 1013 of the rubber node 101, and the inner hole 1021 of the rod body is prevented from being scratched due to interference between the lower end face of the longitudinal withdrawing pressure head 6 and the mandrel axis 1012 in the withdrawing process; the upper end part of the longitudinal withdrawing pressure head 6 protrudes outwards in the circumferential direction to form a limiting convex rib 602, and the height of the barrel part 603 of the longitudinal withdrawing pressure head 6, which is positioned at the lower end of the limiting convex rib 602, is greater than that of the rod body inner hole 1021, so that the longitudinal withdrawing pressure head 6 can completely withdraw the rubber node 101 from the inner hole 1012; when the node withdrawing operation is performed, the lower end surface of the longitudinal withdrawing pressure head 6 is in contact with the upper end surface of the outer sleeve 1013 of the rubber node 101, and after the rubber node 101 leaves the inner hole 1021 of the rod body 102, the longitudinal withdrawing pressure head 6 is limited on the upper end surface of the longitudinal connecting end 1A by the limiting convex rib 602.
The support assembly comprises a limit support seat 8 which is positioned on the side of the limit support cylinder 7 and has the same central line with the limit support cylinder 7, and a transverse connecting end 1B of the vertical traction rod 1 is arranged at the upper end of the limit support seat 8; the transverse withdrawing unit comprises a transverse withdrawing pressure head 9 and a transverse receiving barrel 10, when the rubber node 101 of the transverse connecting end 1B is subjected to node withdrawing operation, the transverse withdrawing pressure head 9 and the transverse receiving barrel 10 are positioned on two sides of the mandrel horizontal direction of the rubber node 101 of the transverse connecting end 1B, the transverse withdrawing pressure head 9 can withdraw the rubber node 101 in the transverse connecting end 1B from the inner hole 1021 of the rod body 102 and is supported by the transverse receiving barrel 10, and the transverse withdrawing pressure head 9 and the longitudinal withdrawing pressure head 6 are the same in structure.
The transverse receiving cylinder 10 comprises a receiving through hole, and the length of the transverse receiving cylinder 10 is greater than that of a core shaft of the rubber node 101, so that after the transverse withdrawing pressure head 9 withdraws the rubber node 101, the rubber node 101 can be wholly withdrawn into the receiving through hole of the transverse receiving cylinder 10, and the rubber node 101 is prevented from falling; a notch 1102 facilitating the mechanical arm to take out the withdrawn rubber node 101 is axially arranged at one end of the transverse receiving cylinder 10 facing the vertical traction rod 1, a transverse pressure output device II 15 capable of driving the transverse receiving cylinder 10 to horizontally stretch and retract is arranged at one end of the transverse receiving cylinder 10 far away from the vertical traction rod 1, and the transverse receiving cylinder 10 is fixedly connected to the power output end of the transverse pressure output device II 15 through a flange plate I1401; one end of the transverse withdrawing pressure head 9, which is far away from the vertical traction rod 1, is provided with a transverse pressure output device I14 capable of driving the transverse withdrawing pressure head 9 to horizontally stretch, and the transverse withdrawing pressure head 9 is fixedly connected to the power output end of the transverse pressure output device I14 through a flange plate II 1501.
The supporting assembly comprises a side supporting plate 3 positioned at the upper end of the bottom plate 2 and an upper supporting plate 4 fixedly connected to the upper end of the side supporting plate 3, the side supporting plates 3 are vertically arranged at two upper ends of the bottom plate 2, the upper supporting plate 4 is clamped and fixed at the upper ends of the two side supporting plates 3 through a clamping groove 403 on the lower end surface, a first sliding groove 201 for the side supporting plate 3 to horizontally slide is arranged on the bottom plate 2, and as shown in fig. 7, the length of the first sliding groove 201 is smaller than that of the bottom plate 2 so as to prevent the side supporting plate 3 from sliding out of the bottom plate 2; the circular through hole 402 is arranged on the upper supporting plate 4, and the limiting supporting cylinder 7 is arranged at the upper end of the upper supporting plate 4 and surrounds the outer side of the circular through hole 402; the upper supporting plate 4 is also provided with a second sliding groove 401 which is concentric with the circular through hole 402, the limiting supporting seat 8 is arranged on the second sliding groove 401 in a sliding manner, and the central distance between the limiting supporting cylinder 7 and the limiting supporting seat 8 can be adjusted by horizontally sliding the limiting supporting seat 8 on the second sliding groove 401, so that the upper supporting plate 4 can perform node withdrawing operation on the vertical traction rods 1 with different central distances; the upper end face of the limit supporting seat 8 sinks to form a second limit step 901 for positioning the transverse connecting end 1B of the vertical traction rod 1. The bottom of the limit support seat 8 is provided with a square boss matched with the second sliding groove 401, the limit support seat 8 can be of a solid structure or a hollow structure and can also be round or square, the limit support seat 8 in the embodiment is of a square hollow structure, and the second limit step 901 at the upper end of the limit support seat 8 is rectangular matched with the rod body shape of the transverse connecting end 1B of the vertical traction rod 1.
Wherein, a connecting plate which is connected with the inner wall of the side supporting plate 3 in a sliding way is arranged below the upper supporting plate 4, and a connecting through hole for the power output rod 502 of the driving piece I to pass through is arranged on the connecting plate; the connecting plate can drive the longitudinal receiving cylinder 5 to slide to the lower part of the circular through hole 402, and after the rubber node 101 of the vertical connecting end 1A retreats onto the longitudinal receiving cylinder 5, the longitudinal receiving cylinder 5 and the rubber node 101 are driven to slide out from the lower part of the upper supporting plate 4 so that the rubber node 101 retreated by the manipulator can be taken out.
The connecting plates comprise side connecting plates 1201 parallel to the side supporting plates 3 and lower connecting plates 1204 vertically arranged at the lower ends of the side connecting plates 1201, and reinforcing ribs 1205 shown in fig. 5 are further arranged at the connecting positions of the side connecting plates 1201 and the lower connecting plates 1204 to ensure that the side connecting plates 1201 and the lower connecting plates 1204 are stably connected; the connecting through holes are formed in the lower connecting plate 1204, more than two sliding grooves three 301 are formed in the inner wall of the side supporting plate 3, the number of the sliding grooves three 301 in the embodiment is two, sliding blocks 1202 matched with the sliding grooves three 301 are arranged on the side connecting plate 1201, the sliding blocks 1202 in the embodiment are T-shaped sliding blocks 1202 shown in fig. 6, the lower narrow ends of the T-shaped sliding blocks 1202 extend into the sliding grooves three 301 to be in sliding fit with the sliding grooves three 301, T-shaped sliding grooves four 1206 matched with the T-shaped sliding blocks 1202 are further formed in the side connecting plate 1201, the upper long ends of the T-shaped sliding blocks 1202 and the upper portions of the lower narrow ends of the T-shaped sliding blocks 1202 are located in the T-shaped sliding grooves 1206 four to be in sliding fit with the side connecting plate 1201, and the upper long ends of the T-shaped sliding blocks 1202 can also form a back-off effect to prevent the T-shaped sliding blocks 1202 from falling out of the side connecting plate 1201. As shown in fig. 8, a first blocking piece 302 located above the side connecting plate 1201 is arranged at the outer end of the third sliding slot 301 on the inner wall of the side supporting plate 3, that is, the first blocking piece 302 is higher than the upper end surface of the side connecting plate 1201, and a second blocking piece 1203 capable of blocking the first blocking piece 302 to prevent the side connecting plate 1201 from falling out of the side supporting plate 3 is arranged at one end of the upper end surface of the side connecting plate 1201, which is far away from the first blocking piece 302.
The node withdrawing method of the vertical traction rod adopts the node withdrawing device to carry out node withdrawing operation, and the node withdrawing step comprises the following steps:
the first step of driving the longitudinal receiving cylinder 5 to move upwards and extend upwards from the circular through hole 402 into the lower inner side of the limiting supporting cylinder 7 by the first driving part when the longitudinal receiving cylinder 5 stops when being positioned under the circular through hole 402 of the upper supporting plate 4 through a control program, wherein the longitudinal receiving cylinder 5 is driven by the connecting plate to move towards the inner side of the side supporting plate 3;
secondly, the position of the limiting support seat 8 in the first sliding groove 201 of the upper support plate 4 is adjusted in a sliding mode, so that the center distance between the limiting support seat 8 and the limiting support cylinder 7 is consistent with the center distance of the rod body 102 of the withdrawn vertical traction rod 1;
thirdly, the vertical traction rod 1 needing to be subjected to node withdrawal is placed on the supporting assembly, wherein the longitudinal connecting end 1A is positioned on a first limiting step 701 at the upper end of the limiting supporting cylinder 7, and the transverse connecting end 1B is positioned on a second limiting step 901 at the upper end of the limiting supporting seat 8;
fourthly, the longitudinal withdrawing pressure head 6 is arranged on the longitudinal connecting end 1A, and the lower end face of the longitudinal withdrawing pressure head 6 is contacted with the upper end face of the outer sleeve 1013 of the rubber node 101;
fifthly, the side supporting plate 3 is controlled by a program to move towards a first transverse pressure output device 14 and a second transverse pressure output device 15 on the bottom plate 2, and the movement is stopped when the central line of the rubber node 101 in the transverse connecting end 1B is coincident with the central lines of the transverse withdrawing pressure head 9 and the transverse receiving cylinder 10;
sixthly, moving the transverse withdrawing pressure head 9 towards the transverse connecting end 1B of the vertical traction rod 1 through a transverse pressure output device I14, and stopping moving when the end surface of one side, close to the transverse connecting end 1B, of the transverse withdrawing pressure head 9 is contacted with the upper end surface of the jacket 1013, close to one side, of the transverse withdrawing pressure head 9, of the rubber node 101; moving the transverse receiving cylinder 10 towards the transverse connecting end 1B of the vertical traction rod 1 through a second transverse pressure output device 15, and stopping moving when the end face of the transverse receiving cylinder 10, close to the side of the transverse connecting end 1B, is in contact with the end face of the rod body 102;
(seventh) controlling the longitudinal pressure output device 13 to press downwards and towards the upper end surface of the longitudinal withdrawing pressure head 6 through a program, and beginning to withdraw the rubber node 101 in the longitudinal connecting end 1A;
(eighth) after the rubber node 101 in the longitudinal connecting end 1A exits and is received by the longitudinal receiving cylinder 5, keeping the pressure of the longitudinal pressure output device 13 unchanged, and simultaneously controlling the transverse pressure output device I14 to enable the transverse exiting pressure head 9 to apply pressure to the rubber node 101 in the transverse connecting end 1B, starting exiting of the rubber node 101 in the transverse connecting end 1B, wherein the transverse receiving cylinder 10 receives the exiting rubber node 101;
(nine) controlling the longitudinal pressure output device 13, the transverse pressure output device 14 and the transverse pressure output device 15 to move back by a program, controlling the side support plate 3 to move to a limit position far away from the transverse pressure output device, and sliding the connecting plate out of the side support plate 3 from the lower side of the side support plate 3;
and (ten) clamping the rubber node 101 which exits from the transverse receiving cylinder 10 and the rubber node 101 which exits from the longitudinal receiving cylinder 5 by the manipulator, placing the rubber node 101 in a scrapped node temporary storage area, finishing exiting of the rubber node 101, and waiting for exiting of the rubber node 101 in the next vertical traction rod 1.
The above examples are only illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments of the present invention as required without any inventive contribution thereto after reading the present specification, but all such modifications are intended to be protected by the following claims.
Claims (10)
1. The node withdrawing device of the vertical traction rod comprises a bottom plate (2), a supporting assembly arranged at the upper end of the bottom plate (2) and a withdrawing assembly arranged on the supporting assembly, wherein the withdrawing assembly comprises a longitudinal withdrawing unit for withdrawing a rubber node (101) in a longitudinal connecting end (1A) of the vertical traction rod (1) and a transverse withdrawing unit for withdrawing the rubber node (101) in a transverse connecting end (1B); the vertical traction rod (1) is arranged on the supporting assembly, and the rubber nodes (101) at two ends of the vertical traction rod (1) are respectively withdrawn through the longitudinal withdrawing unit and the transverse withdrawing unit.
2. A device for removing a knot according to claim 1, characterised in that the longitudinal removal unit comprises a longitudinal receiving cylinder (5) and a longitudinal removal ram (6); the lower end of the longitudinal receiving cylinder (5) is provided with a first driving part, the longitudinal receiving cylinder (5) is fixedly connected to the power output end of the first driving part, and the first driving part can drive the longitudinal receiving cylinder (5) to extend up and down; the supporting assembly is provided with a circular through hole (402), the supporting assembly comprises a limiting supporting cylinder (7) which is coaxially communicated with the circular through hole (402) and is positioned above the circular through hole (402), the aperture of the lower end of the limiting supporting cylinder (7) is not smaller than that of the circular through hole (402), the aperture of the circular through hole (402) is not smaller than the outer diameter of the upper end of the longitudinal receiving cylinder (5), and the longitudinal receiving cylinder (5) can extend upwards into the inner side of the lower part of the limiting supporting cylinder (7) from the circular through hole (402) to support the withdrawn rubber node (101); the longitudinal connecting end (1A) of the vertical traction rod (1) is arranged at the upper end of the limiting support cylinder (7), the longitudinal withdrawing pressure head (6) is arranged at the upper end of the longitudinal connecting end (1A), and the longitudinal withdrawing pressure head (6) can withdraw the rubber node (101) in the longitudinal connecting end (1A) downwards from an inner hole (1021) of the rod body (102) and is supported by the longitudinal receiving cylinder (5).
3. The node removing device of the vertical traction rod according to claim 2, wherein the support assembly comprises a limit support seat (8) which is positioned at the side of the limit support cylinder (7) and is concentric with the limit support cylinder (7), and a transverse connecting end (1B) of the vertical traction rod (1) is arranged at the upper end of the limit support seat (8); the transverse withdrawing unit comprises a transverse withdrawing pressure head (9) and a transverse receiving barrel (10), when the rubber node (101) of the transverse connecting end (1B) is subjected to node withdrawing operation, the transverse withdrawing pressure head (9) and the transverse receiving barrel (10) are positioned on two sides of the mandrel in the horizontal direction of the rubber node (101) of the transverse connecting end (1B), and the transverse withdrawing pressure head (9) can withdraw the rubber node (101) in the transverse connecting end (1B) from an inner hole (1021) of the rod body (102) and is supported by the transverse receiving barrel (10).
4. A node relieving device of a vertical traction rod according to claim 3, wherein the longitudinal receiving cylinder (5) is provided with a first (501) opening upwards, the inner diameter of the first (501) is larger than the outer diameter of the lower end face of the mandrel axle center (1012), and the inner diameter of the first (501) is smaller than the outer diameter of the casing (1013) of the rubber node (101) and is not smaller than the inner diameter of the casing (1013) of the rubber node (101); when the rubber node (101) is received, the lower end face of the outer sleeve (1013) of the rubber node (101) is in contact with the upper end face of the longitudinal receiving cylinder (5), and the lower part of the axial center (1012) of the lower end core shaft of the rubber node (101) and the flat square (1011) are positioned in the first accommodating hole (501).
5. The device for removing the nodal point of the vertical traction rod according to claim 4, characterized in that the upper end surface of the limiting support cylinder (7) is sunk to form a first limiting step (701) for positioning the longitudinal connecting end (1A) of the vertical traction rod (1); a second accommodating hole (601) is formed in the longitudinal withdrawing pressure head (6), the outer diameter of the lower end face of the longitudinal withdrawing pressure head (6) is smaller than the bore diameter of an inner bore (1021) of the rod body (102), and the inner diameter of the lower end face of the longitudinal withdrawing pressure head (6) is larger than the outer diameter of the upper end face of a mandrel axis (1012) of the rubber node (101) and is not smaller than the inner diameter of an outer sleeve (1013) of the rubber node (101); the upper end part of the longitudinal withdrawing pressure head (6) protrudes to the circumferential outer side to form a limiting convex rib (602), and the height of a barrel part (603) of the longitudinal withdrawing pressure head (6) at the lower end of the limiting convex rib (602) is greater than that of an inner hole (1021) of the rod body; when node withdrawing operation is carried out, the lower end face of the longitudinal withdrawing pressure head (6) is contacted with the upper end face of the outer sleeve (1013) of the rubber node (101), and after the rubber node (101) leaves the inner hole (1021) of the rod body (102), the longitudinal withdrawing pressure head (6) is limited on the upper end face of the longitudinal connecting end (1A) through the limiting convex rib (602).
6. The node removing device of the vertical traction rod according to claim 5, wherein the transverse receiving cylinder (10) comprises a receiving through hole, the length of the transverse receiving cylinder (10) is greater than that of a core shaft of the rubber node (101), and after the rubber node (101) is removed by the transverse removing pressure head (9), the rubber node (101) is integrally removed into the receiving through hole of the transverse receiving cylinder (10); a notch (1102) which is convenient for a manipulator to take out the withdrawn rubber node (101) is axially arranged at one end of the transverse receiving cylinder (10) facing the vertical traction rod (1), a transverse pressure output device II (15) which can drive the transverse receiving cylinder (10) to horizontally stretch is arranged at one end of the transverse receiving cylinder (10) far away from the vertical traction rod (1), and the transverse receiving cylinder (10) is fixedly connected to the power output end of the transverse pressure output device II (15); one end of the transverse withdrawing pressure head (9) far away from the vertical traction rod (1) is provided with a transverse pressure output device I (14) capable of driving the transverse withdrawing pressure head (9) to horizontally stretch, and the transverse withdrawing pressure head (9) is fixedly connected to the power output end of the transverse pressure output device I (14).
7. The node withdrawing device of the vertical traction rod according to claim 6, wherein the supporting assembly comprises a side supporting plate (3) positioned at the upper end of the bottom plate (2) and an upper supporting plate (4) fixedly connected to the upper end of the side supporting plate (3), a first sliding groove (201) for the side supporting plate (3) to slide horizontally is arranged on the bottom plate (2), and the length of the first sliding groove (201) is smaller than that of the bottom plate (2) so as to prevent the side supporting plate (3) from sliding out of the bottom plate (2); the circular through hole (402) is arranged on the upper supporting plate (4), and the limiting supporting cylinder (7) is arranged at the upper end of the upper supporting plate (4) and surrounds the outer side of the circular through hole (402); the upper supporting plate (4) is also provided with a second sliding groove (401) which is concentric with the circular through hole (402), the limiting supporting seat (8) is arranged on the second sliding groove (401) in a sliding manner, and the central distance between the limiting supporting cylinder (7) and the limiting supporting seat (8) can be adjusted by horizontally sliding the limiting supporting seat (8) on the second sliding groove (401); the upper end face of the limiting support seat (8) sinks to form a limiting step II (901) for positioning the transverse connecting end (1B) of the vertical traction rod (1).
8. The node removing device of the vertical traction rod according to claim 7, wherein a connecting plate which is slidably connected to the inner wall of the side supporting plate (3) is further arranged below the upper supporting plate (4), and a connecting through hole for a power output rod (502) of the driving piece I to pass through is formed in the connecting plate; the connecting plate can drive the longitudinal receiving cylinder (5) to slide to the lower side of the circular through hole (402), and drives the longitudinal receiving cylinder (5) and the rubber node (101) to slide out from the lower side of the upper supporting plate (4) after the rubber node (101) of the vertical connecting end retreats onto the longitudinal receiving cylinder (5), so that the manipulator can take out the retreated rubber node (101).
9. The node removing device of the vertical traction rod according to claim 8, wherein the connecting plate comprises a side connecting plate (1201) parallel to the side supporting plate (3) and a lower connecting plate (1204) vertically arranged at the lower end of the side connecting plate (1201), the connecting through hole is arranged on the lower connecting plate (1204), the inner wall of the side supporting plate (3) is provided with a third sliding groove (301), and the side connecting plate (1201) is provided with a sliding block (1202) matched with the third sliding groove (301); a first blocking block (302) which is positioned above the side connecting plate (1201) is arranged at the outer end of the third sliding groove (301) on the inner wall of the side supporting plate (3), and a second blocking block (1203) which can block the first blocking block (302) to prevent the side connecting plate (1201) from falling out of the side supporting plate (3) is arranged at one end, far away from the first blocking block (302), of the side connecting plate (1201).
10. The node removing method of the vertical traction rod adopts the node removing device as claimed in claims 1 to 9 to carry out node removing operation, and is characterized in that the node removing step comprises the following steps:
the method comprises the following steps that (I) through a control program, a connecting plate drives a longitudinal receiving cylinder (5) to move towards the inner side of a side supporting plate (3), the longitudinal receiving cylinder stops when the longitudinal receiving cylinder (5) is located under a circular through hole (402) of an upper supporting plate (4), and then a driving piece I drives the longitudinal receiving cylinder (5) to move upwards and extend upwards into the inner side of the lower part of a limiting supporting cylinder (7) from the circular through hole (402);
secondly, the position of the limiting support seat (8) in the first sliding groove (201) of the upper support plate (4) is adjusted in a sliding mode, so that the center distance between the limiting support seat (8) and the limiting support barrel (7) is consistent with the center distance of the rod body (102) of the withdrawn vertical traction rod (1);
thirdly, a vertical traction rod (1) needing to retreat the node is arranged on the support assembly, wherein the longitudinal connecting end (1A) is positioned on a first limiting step (701) at the upper end of the limiting support cylinder (7), and the transverse connecting end (1B) is positioned on a second limiting step (901) at the upper end of the limiting support seat (8);
fourthly, the longitudinal withdrawing pressure head (6) is arranged on the longitudinal connecting end (1A), and the lower end face of the longitudinal withdrawing pressure head (6) is contacted with the upper end face of the outer sleeve (1013) of the rubber node (101);
fifthly, the lateral supporting plate (3) is controlled by a program to move towards a first lateral pressure output device (14) and a second lateral pressure output device (15) on the bottom plate (2), and the lateral supporting plate stops moving when the central line of a rubber node (101) in the lateral connecting end (1B) is coincident with the central lines of a lateral withdrawing pressure head (9) and a lateral receiving cylinder (10);
sixthly, moving the transverse withdrawing pressure head (9) towards a transverse connecting end (1B) of the vertical traction rod (1) through a transverse pressure output device I (14), and stopping moving when the end surface of one side, close to the transverse connecting end (1B), of the transverse withdrawing pressure head (9) is contacted with the upper end surface of the jacket (1013), close to one side, of the transverse withdrawing pressure head (9), of the rubber node (101); the transverse receiving cylinder (10) is moved towards the transverse connecting end (1B) of the vertical traction rod (1) through a transverse pressure output device II (15), and the transverse receiving cylinder stops moving when the end face of one side, close to the transverse connecting end (1B), of the transverse receiving cylinder (10) is in contact with the end face of the rod body (102);
seventhly, the longitudinal pressure output device (13) is controlled by a program to downwards press the upper end face of the longitudinal withdrawing pressure head (6) to begin to withdraw the rubber node (101) in the longitudinal connecting end (1A);
(eight) after the rubber node (101) in the longitudinal connecting end (1A) is withdrawn and is received by the longitudinal receiving cylinder (5), keeping the pressure of the longitudinal pressure output device (13) unchanged, and simultaneously controlling the transverse pressure output device I (14) to enable the transverse withdrawing pressure head (9) to apply pressure to the rubber node (101) in the transverse connecting end (1B) to start withdrawing the rubber node (101) in the transverse connecting end (1B), wherein the transverse receiving cylinder (10) receives the withdrawn rubber node (101);
(nine) controlling the longitudinal pressure output device (13), the transverse pressure output device I (14) and the transverse pressure output device II (15) to move back by a program, controlling the side support plate (3) to move to a limit position far away from the transverse pressure output device, and sliding the connecting plate out of the side support plate (3) from the lower side of the side support plate (3);
and (ten) clamping the rubber nodes (101) which are positioned on the transverse receiving cylinder (10) and withdraw from the longitudinal receiving cylinder (5) through a manipulator, placing the rubber nodes (101) in a scrapped node temporary storage area, completing the withdrawal of the rubber nodes (101), and waiting for the withdrawal of the rubber nodes (101) in the next vertical traction rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136688.2A CN113977515B (en) | 2021-09-27 | 2021-09-27 | Node withdrawing device and node withdrawing method of vertical traction rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136688.2A CN113977515B (en) | 2021-09-27 | 2021-09-27 | Node withdrawing device and node withdrawing method of vertical traction rod |
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| CN113977515A true CN113977515A (en) | 2022-01-28 |
| CN113977515B CN113977515B (en) | 2023-03-28 |
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| US20090315298A1 (en) * | 2008-06-20 | 2009-12-24 | Cnh America Llc | Method and assembly for drawbar retention |
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| CN204524732U (en) * | 2015-04-26 | 2015-08-05 | 襄阳国铁机电有限责任公司 | EMUs draw bar rubber arthrosis more changing device |
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| CN107813250A (en) * | 2017-10-23 | 2018-03-20 | 中车南京浦镇车辆有限公司 | Bogie drawing pull bar node is pressed unloads integral type frock with moving back |
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2021
- 2021-09-27 CN CN202111136688.2A patent/CN113977515B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090315298A1 (en) * | 2008-06-20 | 2009-12-24 | Cnh America Llc | Method and assembly for drawbar retention |
| CN201881131U (en) * | 2010-12-23 | 2011-06-29 | 中国北车集团大同电力机车有限责任公司 | Press-mounting auxiliary tool for traction rod of locomotive |
| CN204524732U (en) * | 2015-04-26 | 2015-08-05 | 襄阳国铁机电有限责任公司 | EMUs draw bar rubber arthrosis more changing device |
| CN106078166A (en) * | 2016-06-28 | 2016-11-09 | 芜湖禾田汽车工业有限公司 | Lining guides erecting device |
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| CN113977515B (en) | 2023-03-28 |
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