A short coupler with a buffer device

Abstract

The present invention discloses a short coupler with a buffer device in the field of coupler buffer technology, comprising a coupler part, a hook body, a hook lock inserted transversely in the hook body, an axle pin inserted in the side of the hook body, a small cotter pin inserted transversely at one end of the axle pin, a lock lift inserted in one side of the hook body, and the lock lift is located in the hook body and extends to the hook lock at one end, and a hook release spring sleeved on the hook lock and located in the hook body. The short coupler with a buffer device of the present invention is an automatic coupling coupler, which is divided into two parts, the front is a coupler, which is a willison profile coupler, and the rear is provided with a buffer device, which can absorb the energy during traction and collision. The coupler and the buffer device are designed as an integrated whole, which shortens the distance between mine cars and ensures the structural design of the front and rear overlap between mine cars, so as to meet the requirements of continuous ore loading.

Description

Technical Field

[0001] The invention relates to the technical field of coupler buffering, and in particular to a short coupler with a buffering device. Background Art

[0002] The coupler is a part of the mine car used to achieve the connection between the locomotive and the mine car or between the mine cars, transmit the traction and impact force, and keep a certain distance between the mine cars. It has the function of connection and traction. In the ground and underground rail transportation system, the buffer device of the coupler is one of the most important parts. It is used to mitigate the longitudinal impact and vibration caused by the change of locomotive traction during the operation of the train or the collision of vehicles during starting, braking and shunting operations. The buffer device has the function of dissipating the impact and vibration between vehicles, thereby reducing the damage to the vehicle structure and the loaded cargo, so the coupler must have a buffering effect.

[0003] In the prior art, the coupler and the buffer device are independent, and are formed into a whole by arranging the coupler tail frame and the coupler tail pin in a line. The structural design is not compact, and the length of the coupler tail end is very long, resulting in a large distance between the mine cars. The front and rear overlap structure between the mine cars cannot meet the requirements of continuous ore loading, and the requirements of continuous ore loading of the mine cars during loading cannot be realized. Summary of the invention

[0004] In view of the fact that the above-mentioned existing coupler and buffer device are independent, and are formed into a whole by arranging the coupler tail frame and the coupler tail pin in a line, the structural design is not compact, and the length of the coupler tail end is very long, resulting in a large distance between the mine cars. The front and rear overlapping structure between the mine cars cannot meet the requirements of continuous ore loading, and the requirement of continuous ore loading of the mine cars during loading cannot be achieved. The inventors hereby propose a short coupler with a buffer device to solve such problems.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a short coupler with a buffer device, comprising:

[0006] The hook part includes a hook body, a hook lock inserted transversely into the hook body, an axle pin inserted into the side of the hook body, a small cotter pin inserted transversely into one end of the axle pin, a lock lift inserted into one side of the hook body, and one end of the lock lift located in the hook body extends to the hook lock, and a hook release spring sleeved on the hook lock and located in the hook body; and,

[0007] The buffer device includes an impact seat connected to the coupler frame, and the end of the hook body extends into the impact seat, a rear follower plate inserted between the impact seat and the coupler frame, two groups of buffer components symmetrically arranged on both sides of the rear follower plate, two groups of connecting pins inserted on both sides of the impact seat, a large cotter pin inserted on the connecting pin, a tail push block arranged in the impact seat and one end extending into the hook body, a tail spring laterally abutting against the top end of the tail push block, and the tail spring extending outward into the hook body, and a tail pin inserted in the tail push block in a vertical direction, and the two ends of the tail pin extend outward through the hook body to the upper and lower sides of the rear follower plate.

[0008] As a preferred solution of the short coupler with a buffer device described in the present invention, the hook body is provided with a hollow cavity, the cavity is divided into an upper cavity and a lower cavity, a long opening connected to the outside is provided at the top of the upper end, and an unhooking spring extends through the long opening into the internal cavity of the hook body, a boss is provided inside the lower cavity, and one end of the unhooking spring abuts against the boss.

[0009] As a preferred embodiment of the short coupler with a buffer device described in the present invention, the lower end of the hook body is a strip structure, and the cavity is opened in the strip structure, the top end is an obtuse triangle structure with the longest side facing upward, the longest side is an inclined plane, a hook groove opening outward is opened at the center of the inclined plane, a hook head is fixedly arranged on one side of the hook groove opening, the hook head protrudes outward and is located on the outside of the inclined plane, a hole A is opened in the vertical direction at the connection position of the strip structure and the obtuse triangle structure, a hole B is opened in the horizontal direction at the same position, the holes A and B are staggered and do not overlap, and long holes F are opened in the vertical direction on both sides of the end of the strip structure.

[0010] As a preferred solution of the short coupler with a buffer device described in the present invention, the hook lock includes a locking head located in the hook groove in the vertical direction, a long rod fixedly connected to one side of the locking head and extending into the hook body cavity, and an E hole laterally opened at the connection position between the locking head and the long rod, and the lock hook is inserted into the E hole.

[0011] As a preferred embodiment of the short coupler with a buffer device described in the present invention, the lock includes a lifting hook inserted in the E hole, and the top end of the lifting hook extends upward, the extended portion is perpendicular to the lifting hook, a C hole is opened at a lower position of the outwardly extended portion of the lifting hook, and the axle pin passes through the C hole, and a D hole is opened at the top end of the outwardly extended portion of the lifting hook.

[0012] As a preferred solution of the short coupler with a buffer device described in the present invention, the tail push block is an overall "H"-shaped structure, the empty slots above the "H"-shaped structure are cylindrical holes, and one end of the tail spring extends into the cylindrical hole, the empty slots below are open holes, and the tail pin passes through the open hole, and the outer end surfaces of the two lower legs of the "H"-shaped structure are provided with arc surfaces.

[0013] As a preferred embodiment of the short coupler with a buffer device described in the present invention, the buffer component is composed of two groups of end buffer plates and multiple groups of middle buffer plates, the end buffer plates are composed of a metal plate and a rubber plate bonded together, the middle buffer plates are composed of a metal plate and two rubber plates bonded together, and the two rubber plates are respectively bonded to both sides of the metal plate.

[0014] As a preferred solution of the short coupler with buffer device described in the present invention, wherein: G long holes are opened on both sides of the impact seat, and the connecting pin passes through the G long holes to be connected to the coupler frame, and a bottom panel is opened on the outer side of the impact seat close to the rear plate position, and the top end of the buffer component abuts against the bottom panel.

[0015] As a preferred solution of the short coupler with buffer device described in the present invention, wherein: the rear follower plate is a semi-open structure, with two groups of chambers opened on both sides thereof, and the buffer component is installed in the chamber, a bottom plate is provided on the bottom surface of the rear follower plate, an H hole is opened in the vertical direction of the rear follower plate, and the tail pin is inserted in the H hole, as well as two groups of protrusions symmetrically arranged at the center position of the rear follower plate, and the protrusions abut against the arc surface at the end of the tail push block.

[0016] As a preferred solution of the short coupler with buffer device described in the present invention, the tail spring is made of silicon manganese spring steel, and is located in the lower cavity of the hook body, with its two ends respectively abutting against the boss and the cylindrical hole.

[0017] Beneficial effects of the present invention:

[0018] 1. The integrated design of the hook and the buffer device shortens the distance between the mine cars, meets the needs of continuous loading of mine cars, and reduces the bending moment of the mine car wall panels.

[0019] 2. The coupler has a large swing angle. The tail spring, as a restoring device of the coupler, greatly alleviates the swing force of the coupler and can ensure the coupler is centered as much as possible.

[0020] 3. The two arc surfaces of the tail push block are in tangential contact with the two bosses in the rear plate, which has a fixed length function (ensuring the distance between the mine cars). At the same time, the tail push block can drive the tail spring and the hook body to swing together.

[0021] 4. The structural design is simple. During traction, the impact seat does not move, and the rear follower plate compresses the buffer device to reduce shock and buffer the traction force; during impact, the rear follower plate does not move, and the impact seat moves along its long hole and compresses the buffer device to reduce shock and buffer the impact force.

[0022] 5. The buffer device consists of two groups of end buffer plates and several groups of middle buffer plates. The buffer plate is made of a metal plate and a (or two) rubber plates bonded together. It has high elasticity and viscoelasticity, good seismic isolation effect, and the shape can be freely selected. The hardness can be adjusted through formula design to meet the stiffness and strength requirements in different directions. The buffer device is installed at the openings on both sides of the rear plate to facilitate the replacement of the middle buffer plate; the buffer device is pre-pressed by about 10 mm during installation to give it an appropriate pre-pressure to better exert its buffering performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0024] Figure 1 A schematic diagram of the front and top views of the structure of a short coupler with a buffer device provided by the present invention.

[0025] Figure 2 A schematic diagram of the structure of a short coupler with a buffer device provided by the present invention in a traction state after being connected.

[0026] Figure 3 A schematic diagram of the structure of a short coupler with a buffer device provided by the present invention in a collision state after being connected.

[0027] Figure 4 This is a schematic diagram of the hook body structure provided by the present invention.

[0028] Figure 5 The present invention is a schematic cross-sectional view of a hook body.

[0029] Figure 6 This is a schematic diagram of the hook lock structure provided by the present invention.

[0030] Figure 7 This is a schematic diagram of the lock and lift structure provided by the present invention.

[0031] Figure 8 This is a schematic diagram of the tail push block structure provided by the present invention.

[0032] Fig. 9 This is a schematic structural diagram of the middle buffer plate of the buffer device provided by the present invention.

[0033] Fig.10 This is a schematic structural diagram of the buffer plate at the end of the buffer device provided by the present invention.

[0034] Fig.11 This is a schematic diagram of the rear follower plate structure provided by the present invention.

[0035] Figure numerals: 1, hook body; 2, hook lock; 3, shaft pin; 4, small cotter pin; 5, lock lift; 6, unhooking spring; 7, tail push block; 8, tail spring; 9, tail pin; 10, buffer component; 11, connecting pin; 12, large cotter pin; 13, impact seat; 14, rear follower plate; 15, boss; 151, lower cavity; 16, long mouth; 161, upper cavity; 17, hook groove; 18, hook head; 19, inclined surface; 191, A hole; 192, B hole; 193, F long hole; 21, lock head; 22, long rod; 23, E hole; 51, lifting hook; 52, C hole; 53, D hole; 71, cylindrical hole; 72, opening hole; 73, arc surface; 101, metal plate; 102, rubber plate; 103, bump; 104, pit; 131, G long hole; 132, bottom panel; 141, chamber; 142, bottom plate; 143, H hole; 144, convex frame; 1′, auxiliary hook body; 19′, auxiliary inclined surface; 21′, auxiliary lock head; 17′, auxiliary hook groove; 18′, auxiliary hook head. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Reference Figures 1 to 11 The present invention comprises a short coupler with a buffer device, comprising:

[0039] The hook part includes a hook body 1, a hook lock 2 inserted transversely into the hook body 1, an axle pin 3 inserted into the side of the hook body 1, a small cotter pin 4 inserted transversely into one end of the axle pin 3, a lock lift 5 inserted into one side of the hook body 1, and one end of the lock lift 5 located in the hook body 1 extends to the hook lock 2, and a hook release spring 6 sleeved on the hook lock 2 and located in the hook body 1; and the hook body 1 has an outer contour similar to a Willison hook and is the main body of the hook. Other parts of the hook such as the hook lock 2, the axle pin 3, the small cotter pin 4, the lock lift 5 and the hook release spring 6 are all installed on the hook body 1. Under normal circumstances, the hook body 1 plays a connecting role, and the hook body 1 plays a swinging role when the mine car is running in a non-linear manner;

[0040] The buffer device includes an impact seat 13 connected to the coupler frame, and the end of the hook body 1 extends into the impact seat 13, a rear follower plate 14 inserted between the impact seat 13 and the coupler frame, two groups of buffer components 10 symmetrically arranged on both sides of the rear follower plate 14, two groups of connecting pins 11 inserted on both sides of the impact seat 13, a large cotter pin 12 inserted on the connecting pin 11, a tail push block 7 arranged in the impact seat 13 and one end extending into the hook body 1, a tail spring 8 laterally abutting against the top end of the tail push block 7, and the tail spring 8 extends outward into the hook body 1, and a tail pin 9 vertically inserted on the tail push block 7, and both ends of the tail pin 9 extend outward through the hook body 1 to the upper and lower sides of the rear follower plate 14.

[0041] During use, the device is composed of a coupler part and a buffer device. When in use, the device as a whole will be fixed on the coupler frame of the mine car. Two mine cars equipped with the device can be connected by two sets of the device. In order to distinguish the working status of the two sets of devices (such as Figure 2 , Figure 3 As shown in the figure, special markings “′” will be added to replace the same component names (such as auxiliary hook body 1′, auxiliary lock head 21′, auxiliary inclined surface 19′, etc.).

[0042] Among them, Figure 5 As shown, the hook body 1 is provided with a hollow cavity, which is divided into an upper cavity 161 and a lower cavity 151. A long opening 16 communicating with the outside is provided at the top of the upper end, and the unhooking spring 6 extends through the long opening 16 to the internal cavity of the hook body 1. A boss 15 is provided inside the lower cavity 151, and one end of the unhooking spring 6 abuts against the boss 15. The hook body 1 is formed as a whole by a casting process, and its outer contour is similar to a Willison hook. The Willison hook can maintain a stable connection under various loads and motion conditions, reduce collisions and vibrations, and improve transportation safety.

[0043] Further, such as Figure 4 As shown, the lower end of the hook body 1 is a strip structure, and the cavity is opened in the strip structure, the top end is an obtuse triangle structure with the longest side facing upward, the longest side is an inclined surface 19, a hook groove 17 opening outward is opened at the center of the inclined surface 19, a hook head 18 is fixedly arranged on one side of the opening of the hook groove 17, the hook head 18 protrudes outward and is located on the outside of the inclined surface 19, an A hole 191 is opened in the vertical direction at the connection position of the strip structure and the obtuse triangle structure, and a B hole 192 is opened in the horizontal direction at the same position, the A hole 191 and the B hole 192 are staggered and do not overlap, and F long holes 193 are opened in the vertical direction on both sides of the end of the strip structure.

[0044] During use, combine Figure 4 and Figure 5The hook lock 2 and the unhooking spring 6 inserted into the hook lock 2 are inserted along the long opening 16 at the front end of the hook body 1, and the other end of the unhooking spring 6 is against the top of the internal boss 15 of the hook body 1, and is installed in the upper cavity 161 of the hook body 1 with a certain pre-pressure; the lock lift 5 is inserted into the A hole 191 of the hook body 1, and the shaft pin 3 passes through the B hole 192 of the hook body 1, and the hook body 1 and the lock lift 5 are fixedly connected together and locked with a small cotter pin 4; the F long hole 193 is fixedly connected to the rear plate 14 through the tail pin 9.

[0045] Among them, Figure 6 As shown, the hook lock 2 includes a lock head 21 vertically located in the hook groove 17, a long rod 22 fixedly connected to one side of the lock head 21 and extending into the cavity of the hook body 1, and an E hole 23 laterally opened at the connection position between the lock head 21 and the long rod 22, and the lock lift 5 is inserted into the E hole 23.

[0046] During use, the lock head 21 plays the role of locking and unlocking the hook. It does not bear the pulling force between the hooks in the moving direction of the mine car, but only bears the lateral mutual squeezing force. The long rod 22 provides elastic guidance for the unhooking spring 6, and the E hole 23 provides an unhooking fulcrum for the lock handle 5.

[0047] Among them, Figure 7 As shown, the lock lift 5 includes a lifting hook 51 inserted into the E hole 23, and the top end of the lifting hook 51 extends upward, and the extended portion is perpendicular to the lifting hook 51, a C hole 52 is opened at a lower position of the outwardly extended portion of the lifting hook 51, and the axle pin 3 passes through the C hole 52, and a D hole 53 is opened at the top end of the outwardly extended portion of the lifting hook 51.

[0048] During use, the lifting hook 51 is inserted into the E hole 23 of the hook lock 2; the axle pin 3 passes through the C hole 52 of the lock lift 5 to securely connect the hook body 1 and the lock lift 5 together, and is locked with a small cotter pin 4, and the D hole 53 of the lock lift 5 is connected to the hook lifting device of the coupler, and the hook lifting device is pulled, and the lifting hook 51 pulls back the lock head 21 to complete the unhooking action.

[0049] Among them, Figure 8 As shown, the tail push block 7 is an overall "H"-shaped structure, the empty slots above the "H"-shaped structure are cylindrical holes 71, and one end of the tail spring 8 extends into the cylindrical hole 71, the empty slots below are open holes 72, and the tail pin 9 passes through the open hole 72, and the outer end surfaces of the two lower legs of the "H"-shaped structure are provided with arc surfaces 73.

[0050] During use, the cylindrical hole 71 is the mounting hole of the tail spring 8; the tail pin 9 passes through the H hole 143 of the rear follower plate 14, the F long hole 193 of the hook body 1 and the opening hole 72 of the tail push block 7, and the rear follower plate 14 and the hook body 1 are fixed together, and the tail spring 8 is installed in the lower cavity 151 of the hook body 1 with a certain pre-pressure; the two arc surfaces 73 are in tangential contact with the two protrusions 144 in the rear follower plate 14, and have a fixed length function to ensure the distance between the mine cars. At the same time, the tail push block 7 can drive the tail spring 8 and the hook body 1 to swing together.

[0051] Among them, combined Fig. 9 and Fig.10 The buffer component 10 is composed of two groups of end buffer plates and multiple groups of middle buffer plates. The end buffer plates are composed of a metal plate 101 and a rubber plate 102 bonded together, and the middle buffer plate is composed of a metal plate 101 and two rubber plates 102 bonded together, and the two rubber plates 102 on the middle buffer plate are respectively bonded to the two sides of the metal plate 101, one side of the rubber plate 102 is attached to the metal plate 101, and the two ends of the other side are respectively provided with protrusions 103 and pits 104, and the structures of the protrusions 103 and the pits 104 match; the side of the end buffer plate with the rubber plate 102 is abutted against the rubber plate 102 on the outer side of the middle buffer plate, and the two are matched and positioned by their respective protrusions 103 and pits 104; the difference between the end buffer plate and the middle buffer plate is that the end has the rubber plate 102 only on one side, while the middle buffer plate has the rubber plate 102 on both sides, so both sides of the middle buffer plate have the buffer function.

[0052] During use, the buffer component 10 can be square or round. The buffer component 10 with a metal-rubber bonding structure has a buffering and shock-absorbing effect and can withstand greater traction and impact force. It is particularly suitable for buffering and shock absorption between large-volume mining cars; the buffer component 10 is installed in the chamber 141 on both sides of the rear plate 14, which is convenient for replacing the middle buffer plate; the buffer component 10 is pre-pressed by about 10 mm during installation to give it an appropriate pre-pressure.

[0053] Furthermore, in actual application, the smaller the pre-pressure, the greater the buffering effect. However, if the pre-pressure is too low, the pre-pressure may completely disappear after running for a period of time, resulting in the inability of the buffer device to fully recover, thereby failing to achieve the buffering and vibration reduction effect. Therefore, in order to ensure that the buffer device has a relatively long-term performance stability, there should be an appropriate pre-pressure. The pre-pressure of the buffer component 10 will gradually decay as the running time of the mine car increases. The pre-pressure of the buffer device can be ensured to remain unchanged by replacing the intermediate buffer plate.

[0054] Among them, combined Figure 1G long holes 131 are opened on both sides of the impact seat 13, and the connecting pin 11 passes through the G long hole 131 to be connected to the coupler frame, and a bottom panel 132 is opened on the outer side of the impact seat 13 close to the rear plate 14, and the top end of the buffer component 10 abuts against the bottom panel 132.

[0055] During use, the G long hole 131 of the impact seat 13 is connected to the mine car hook frame through two connecting pins 11 and locked with two large cotter pins 12 to prevent the connecting pins 11 from falling off; the bottom panel 132 presses the buffer component 10 installed on both sides of the rear follower plate 14, and the buffer component 10 has a certain pre-pressure.

[0056] Among them, Fig.11 As shown, the rear follower plate 14 is a semi-open structure, with two groups of chambers 141 opened on both sides thereof, and the buffer component 10 is installed in the chamber 141, a bottom plate 142 is provided on the bottom surface of the rear follower plate 14, an H hole 143 is opened in the vertical direction on the rear follower plate 14, and the tail pin 9 is inserted in the H hole 143, as well as two groups of protrusions 144 symmetrically arranged at the center position of the rear follower plate 14, and the protrusions 144 abut against the arc surface 73 at the end of the tail push block 7.

[0057] During use, two buffer components 10 are installed in the two chambers 141 respectively. In the initial installation state, the bottom plate 142 contacts the inner plate of the coupler frame; the tail pin 9 passes through the H hole 143 of the rear follower plate 14, the F long hole 193 of the hook body 1 and the opening hole 72 of the tail push block 7, and the rear follower plate 14 is rotatably connected with the hook body 1, and the impact seat 13 is also connected in series between the rear follower plate 14 and the hook body 1. The bottom panel 132 of the impact seat 13 presses the two buffer components 10, so that the buffer components 10 have a certain pre-pressure; the two protrusions 144 are in tangential contact with the two arc surfaces 73 of the tail push block 7, and have a fixed length function (to ensure the distance between the mine cars).

[0058] The tail spring 8 is made of silicon-manganese spring steel. The tail spring 8 is located in the lower cavity 151 of the hook body 1 , and its two ends are respectively abutted against the boss 15 and the cylindrical hole 71 .

[0059] During use, silicon-manganese spring steel is suitable for spiral springs that bear larger loads, and thus better utilizes buffering work. When the mine car docks and collides, the tail spring 8 can be compressed to bear part of the impact force; the tail spring 8 is also a recovery device for the coupler. When the mine car runs on a curve, an angle will be generated between the center line of the coupler and the longitudinal center line of the car body. Since the mine car body is long and the coupler offset is large, if it cannot quickly and automatically return to normal after the offset, the swing of the mine car will increase, and sometimes it will cause difficulty in unhooking the mine car.

[0060] Assembly and working principle of this device:

[0061] Coupler part: It is used for coupling, uncoupling and spacing between mine cars;

[0062] Coupler installation (see Figures 4 to 7 ): The unhooking spring 6 is inserted into the long rod 22 at the lower end of the hook lock 2, and the two parts are inserted along the long opening 16 at the front end of the hook body 1. The other end of the unhooking spring 6 is against the upper surface of the internal boss 15 of the hook body 1, and is installed in the upper cavity 161 of the hook body 1 with a certain pre-pressure; the lock lift 5 is inserted into the A hole 191 of the hook body 1, and the lifting hook 51 of the lock lift 5 is inserted into the E hole 23 of the hook lock 2, and the shaft pin 3 passes through the C hole 52 of the lock lift 5 and the B hole 192 of the hook body 1, and is locked with a small cotter pin 4 to prevent the shaft pin 3 from falling off; the D hole 53 of the lock lift 5 is connected to the hook lifting device of the coupler, and the hook lifting device is pulled, and the lifting hook 51 compresses the unhooking spring 6 and pulls back the hook lock 2 to complete the unhooking action;

[0063] When connected (see Figure 2 ), the hook head 18 pushes against the auxiliary inclined surface 19' of the opposite auxiliary hook body 1' to automatically correct, and the lock head 21 pushes the auxiliary lock head 21' of the opposite hook along the running direction. When the lock head 21 extends into the auxiliary hook groove 17' of the opposite hook, the lock head 21 with the reverse thrust of the spring rebounds and pushes the hook head 18 horizontally into the auxiliary hook groove 17' to complete the hooking action. When unhooking (see Figure 3 ), lift the lock handle 5 on any side and pull back the lock head 21 (or the auxiliary lock head 21'), the hook head 18 will then move horizontally out of the auxiliary hook groove 17' and release along the auxiliary inclined surface 19', and the coupler can be separated;

[0064] Buffer device part:

[0065] When installing the hook, the G long hole 131 of the impact seat 13 is connected to the mine car hook frame through two connecting pins 11, and the bottom plate 142 of the rear follower plate 14 contacts the inner plate of the hook frame; the bottom plate 132 presses the buffer component 10 installed in the chambers 141 on both sides of the rear follower plate 14; the tail spring 8 is installed in the lower cavity 151 of the hook body 1, one end of which is against the bottom of the internal boss 15 of the hook body 1, and the other end is against the cylindrical hole 71 of the tail push block 7 which is also installed in the lower cavity 151 of the hook body 1, and the tail pin 9 passes through the H hole 143 of the rear follower plate 14, the F long hole 193 of the hook body 1 and the opening hole 72 of the tail push block 7, so that the tail spring 8 is installed in the lower cavity 151 of the hook body 1 with a certain pre-pressure;

[0066] The hook body 1 can rotate around the tail pin 9 in the hollow cavity inside the impact seat 13, and the rotation angle can reach ±23°; Figure 2 ) The hook body 1 pulls the tail pin 9 and the rear follower plate 14, and the rear follower plate 14 compresses the buffer component 10, and the buffer component 10 transmits the traction force to the impact seat 13. Since the connecting pin 11 is already at the leftmost side of the G long hole 131 of the impact seat 13, the impact seat 13 does not move, but transmits the traction force to the mine car coupler frame through the connecting pin 11; when impacting (see Figure 3), since the bottom plate 142 of the rear follower plate 14 has been in contact with the inner plate of the coupler frame, the rear follower plate 14 does not move, and the hook body 1 transmits the impact force to the impact seat 13, the impact seat 13 moves to the right side of the two G long holes 131 and compresses the buffer component 10, the buffer component 10 transmits the impact force to the rear follower plate 14, and the rear follower plate 14 transmits the impact force to the mine car coupler frame; when the impact seat 13 compresses the buffer component 10, the tail spring 8 is also compressed to bear part of the impact force; at the same time, the tail spring 8 is also a recovery device of the coupler. After the coupler is offset during operation, it can quickly and automatically return to normal, thereby reducing the swing of the mine car operation.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A short coupler with a buffer device, characterized in that: include, The hook part comprises a hook body (1), a hook lock (2) inserted transversely into the hook body (1), an axle pin (3) inserted into the side of the hook body (1), a small cotter pin (4) inserted transversely into one end of the axle pin (3), a lock lift (5) inserted into one side of the hook body (1), and one end of the lock lift (5) located in the hook body (1) extends to the hook lock (2), and a hook release spring (6) sleeved on the hook lock (2) and located in the hook body (1); and, The buffer device comprises an impact seat (13) connected to a coupler frame, wherein the end of a hook body (1) extends into the impact seat (13), a rear follower plate (14) inserted between the impact seat (13) and the coupler frame, two groups of buffer components (10) symmetrically arranged on both sides of the rear follower plate (14), two groups of connecting pins (11) inserted into both sides of the impact seat (13), a large cotter pin (12) inserted into the connecting pins (11), a tail push block (7) arranged in the impact seat (13) and having one end extending into the hook body (1), a tail spring (8) laterally abutting against the top end of the tail push block (7), wherein the tail spring (8) extends outwardly into the hook body (1), and a tail pin (9) inserted into the tail push block (7) in a vertical direction, wherein both ends of the tail pin (9) pass through the hook body (1) outwardly and extend to the upper and lower sides of the rear follower plate (14).

2. The short coupler with a buffer device according to claim 1, characterized in that: The hook body (1) is provided with a hollow cavity, which is divided into an upper cavity (161) and a lower cavity (151). A long opening (16) communicating with the outside is provided at the top of the upper end, and the unhooking spring (6) extends through the long opening (16) into the internal cavity of the hook body (1). A boss (15) is provided inside the lower cavity (151), and one end of the unhooking spring (6) abuts against the boss (15).

3. The short coupler with a buffer device according to claim 2, characterized in that: The lower end of the hook body (1) is a strip-shaped structure, and the cavity is opened in the strip-shaped structure. The top end is an obtuse triangle structure with the longest side facing upwards, and the longest side is an inclined surface (19). A hook groove (17) opening outward is opened at the center of the inclined surface (19). A hook head (18) is fixedly arranged on one side of the opening of the hook groove (17). The hook head (18) protrudes outward and is located outside the inclined surface (19). An A hole (191) is opened in the vertical direction at the connection position of the strip structure and the obtuse triangle structure, and a B hole (192) is opened in the horizontal direction at the same position. The A hole (191) and the B hole (192) are staggered and do not overlap each other. F long holes (193) are opened in the vertical direction on both sides of the end of the strip structure.

4. The short coupler with a buffer device according to claim 1, characterized in that: The hook lock (2) comprises a lock head (21) vertically located in the hook groove (17), a long rod (22) fixedly connected to one side of the lock head (21) and extending into the cavity of the hook body (1), and an E hole (23) transversely arranged at the connection position between the lock head (21) and the long rod (22), and the lock hook (5) is inserted into the E hole (23).

5. The short coupler with a buffer device according to claim 1, characterized in that: The locking hook (5) comprises a hook (51) inserted into the E hole (23), the top end of the hook (51) extending upward, the extended portion being perpendicular to the hook (51), a C hole (52) provided at a lower position of the outwardly extending portion of the hook (51), the shaft pin (3) passing through the C hole (52), and a D hole (53) provided at the top end of the outwardly extending portion of the hook (51).

6. The short coupler with a buffer device according to claim 1, characterized in that: The tail push block (7) is an overall "H"-shaped structure, the empty slots above the "H"-shaped structure are cylindrical holes (71), one end of the tail spring (8) extends into the cylindrical hole (71), the empty slots below are open holes (72), and the tail pin (9) passes through the open holes (72), and the outer end surfaces of the two lower legs of the "H"-shaped structure are provided with arc surfaces (73).

7. The short coupler with a buffer device according to claim 1, characterized in that: The buffer component (10) is composed of two groups of end buffer plates and a plurality of groups of middle buffer plates. The end buffer plates are composed of a metal plate (101) and a rubber plate (102) bonded together. The middle buffer plates are composed of a metal plate (101) and two rubber plates (102) bonded together. The two rubber plates (102) on the middle buffer plates are respectively bonded to two sides of the metal plate (101).

8. The short coupler with a buffer device according to claim 1, characterized in that: The impact seat (13) is provided with G long holes (131) on both sides, and the connecting pin (11) passes through the G long holes (131) to be connected to the coupler frame, and a bottom panel (132) is provided on the outside of the impact seat (13) near the rear follower plate (14), and the top end of the buffer component (10) abuts against the bottom panel (132).

9. The short coupler with a buffer device according to claim 1, characterized in that: The rear follower plate (14) is of a semi-open structure, with two groups of chambers (141) opened on both sides thereof, and the buffer component (10) is installed in the chamber (141), a bottom plate (142) is arranged on the bottom surface of the rear follower plate (14), an H hole (143) is opened in the vertical direction on the rear follower plate (14), and the tail pin (9) is inserted into the H hole (143), and two groups of protrusions (144) are symmetrically arranged at the center position of the rear follower plate (14), and the protrusions (144) are in contact with the arc surface (73) at the end of the tail push block (7).

10. The short coupler with a buffer device according to claim 1, characterized in that: The tail spring (8) is made of silicon-manganese spring steel. The tail spring (8) is located in the lower cavity (151) of the hook body (1), and its two ends are respectively abutted against the boss (15) and the cylindrical hole (71).

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