Mining flat car connecting device

Abstract

The utility model relates to a mine flat car connecting device, and belongs to the technical field of mine flat car production. Comprising a first connector and a second connector, one side of the second connector is provided with a second main connecting lug used for being rotatably connected with a mining flat car, and an auxiliary connecting lug A is connected with a hydraulic damper, a first connecting plate and a second connecting plate through a hinge pin shaft A; the other end of the hydraulic damper, the other end of the first connecting plate and the other end of the second connecting plate are connected with the auxiliary connecting lug B through a hinge pin shaft B. The first connecting plate comprises a waved plate A. A connecting flat plate A and a connecting flat plate B are integrally formed at the two ends of the waved plate A correspondingly. Compared with the prior art, the hydraulic damper has the advantages that the hydraulic damper is overlapped with the first connecting plate and the second connecting plate, buffering of tension or pressure generated between two vehicles at the connecting point when the vehicle speed changes is improved, damage of collision to the connecting point is reduced through elastic connection, safety performance is improved, and meanwhile the service life of the connecting point is prolonged.

Description

Technical Field

[0001] This utility model relates to a connecting device for mining flatbed trucks, belonging to the field of mining flatbed truck manufacturing technology. Background Technology

[0002] Mining flatbed trucks are equipment used in underground mining operations, suitable for transporting equipment or other items along underground tunnels and surface industrial sites.

[0003] For example, utility model patent application number 202221025172.0 discloses a new type of flatbed car for coal mines, including a car frame. The car frame is a square frame welded from square steel pipes, and two pairs of wheel frames are symmetrically arranged at the bottom center of the car frame. Each pair of wheel frames is equipped with a steel rail wheel. Two pairs of sliding seats are arranged on the front and rear sides of the car frame, and the two sliding seats on the same side are mirror symmetrically arranged. The lower end of the sliding seat is slidably connected to the support arm, and the lower outer side of the support arm is equipped with a balance wheel. The bottom of the balance wheel is flush with the bottom of the steel rail wheel. Through the four balance wheels, the balance wheels are set close to the rails at the front and rear positions of the flatbed car, and make adaptive movements with the cooperation of the sliding seats and the support arms.

[0004] Although the aforementioned patent can realize the connection function of mining flatbed trucks, the current technology is not comprehensive and has the following drawbacks: When connecting two adjacent mining flatbed trucks, the long-term use of rigid connection will cause significant damage to the connection structure due to the tension or pressure generated between the two trucks when the speed changes. This makes it very easy for the connection structure to break and deform, thus affecting the coal mine production efficiency.

[0005] To solve one of the above problems, there is an urgent need for a connecting device for mining flatbed trucks. Utility Model Content

[0006] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to improve the buffering of the tension or pressure generated between the two vehicles when the vehicle speed changes by superimposing the hydraulic damper with the first connecting plate and the second connecting plate, and reduce the damage to the connecting point by impact through flexible connection, thereby improving safety performance. To this end, a connecting device for mining flatbed trucks is provided.

[0007] The mining flatbed car connecting device of this utility model includes a first connecting head and a second connecting head. The first connecting head has a first main connecting ear on one side for rotatably connecting to the mining flatbed car, and multiple sets of auxiliary connecting ears A on the other side. The second connecting head has a second main connecting ear on one side for rotatably connecting to the mining flatbed car, and multiple sets of auxiliary connecting ears B on the other side. The auxiliary connecting ears A are connected to a hydraulic damper, a first connecting plate, and a second connecting plate via hinge pins A. The other ends of the hydraulic damper, the first connecting plate, and the second connecting plate are connected to the auxiliary connecting ears B via hinge pins B. The first connecting plate and the second connecting plate are symmetrically arranged on both sides of the hydraulic damper. The first connecting plate includes a corrugated plate A, and connecting plate A and connecting plate B are integrally formed at both ends of the corrugated plate A.

[0008] When connecting two adjacent mining flatcars, the first main connecting lug is rotatably connected to the first mining flatcar, and the second main connecting lug is rotatably connected to the second mining flatcar. The connection point between the two adjacent mining flatcars is set as a hydraulic damper. By superimposing the hydraulic damper with the first connecting plate and the second connecting plate, the buffering of the tension or pressure generated between the two cars when the speed changes is improved at the connection point. The flexible connection reduces the damage to the connection point caused by impact, improves safety performance, and extends the service life of the connection point.

[0009] Preferably, the first connecting plate and the second connecting plate are arranged opposite to each other. The second connecting plate includes a corrugated plate B, and connecting plate C and connecting plate D are integrally formed at both ends of the corrugated plate B. When the vehicle speed changes, the tension or pressure generated between the two vehicles will cause the corrugated plate B to undergo elastic deformation, which improves the buffering effect of the tension or pressure generated between the two vehicles when the vehicle speed changes at the connection point.

[0010] Preferably, there are four sets of secondary connecting ears A, namely, a first secondary connecting ear A, a second secondary connecting ear A, a third secondary connecting ear A, and a fourth secondary connecting ear A integrally formed with the first connecting head 1, and a clearance groove A between adjacent sets of secondary connecting ears A. There are four sets of secondary connecting ears B, namely, a first secondary connecting ear B, a second secondary connecting ear B, a third secondary connecting ear B, and a fourth secondary connecting ear B integrally formed with the second connecting head, and a clearance groove B between adjacent sets of secondary connecting ears B.

[0011] Preferably, the connecting plate A is rotatably mounted in the clearance groove A between the first and second connecting ears A via a hinge pin A; the telescopic end of the hydraulic damper is rotatably mounted in the clearance groove A between the second and third connecting ears A via a hinge pin A; one end of the wave plate B is rotatably mounted in the clearance groove A between the third and fourth connecting ears A via a hinge pin A; the connecting plate B is rotatably mounted in the clearance groove B between the first and second connecting ears B via a hinge pin B; the other end of the hydraulic damper is rotatably mounted in the clearance groove B between the second and third connecting ears B via a hinge pin B; and the connecting plate D is rotatably mounted in the clearance groove B between the third and fourth connecting ears B via a hinge pin B.

[0012] Preferably, the hinge pin A includes a pin body that passes through the first set of connecting lugs A, the second set of connecting lugs A, the third set of connecting lugs A, and the fourth set of connecting lugs A. The upper end of the pin body has a collar, and the external thread section at the other end of the pin body is threaded with a lock nut.

[0013] Preferably, the hinge pin B has the same structure as the hinge pin A.

[0014] Preferably, the hydraulic damper has a rod end connector and a cylinder body connector at both ends. The piston rod of the hydraulic damper has a boss, and a buffer spring is fixed on the boss. The other end of the buffer spring is fixed to the cylinder body of the hydraulic damper. An oil passage hole is opened on the piston of the hydraulic damper, and the oil passage hole connects the rod chamber and the rodless chamber of the hydraulic damper. Hydraulic oil is injected into the cylinder body of the hydraulic damper. The rod end connector is rotatably installed in the clearance groove A between the second and third connecting ears A through a hinge pin A. The cylinder body connector is rotatably installed in the clearance groove B between the second and third connecting ears B through a hinge pin B.

[0015] The function of a hydraulic damper is to act as a safety buffer to prevent damage to the mechanism from hard collisions during operation, providing a certain degree of protection. Specifically, when the vehicle speed changes, the piston rod moves relative to the cylinder. The hydraulic damper's cylinder fluid needs to flow through narrow gaps or channels in the rod-side and rodless-side chambers, generating shear force and converting it into heat energy to slow down the movement.

[0016] Preferably, the cylinder of the hydraulic damper has an oil replenishment hole, which is sealed with an oil replenishment plug.

[0017] Preferably, the hydraulic damper is replaced with a traction belt.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The mining flatbed car connecting device of this utility model, when connecting two adjacent mining flatbed cars, has the first main connecting ear rotatably connected to the first mining flatbed car, and the second main connecting ear rotatably connected to the second mining flatbed car. The connection point between the two adjacent mining flatbed cars is set as a hydraulic damper. By superimposing the hydraulic damper with the first connecting plate and the second connecting plate, the buffering of the tension or pressure generated between the two cars when the car speed changes is improved at the connection point. The flexible connection reduces the damage to the connection point caused by impact, improves safety performance, and extends the service life of the connection point.

[0020] The mining flatbed car connecting device of this utility model has rod end joints and cylinder joints at both ends of the hydraulic damper. The piston rod of the hydraulic damper is provided with a boss. The function of the hydraulic damper is to be a safety buffer device to prevent damage to the mechanism caused by hard collisions during operation, and it can play a certain degree of protection.

[0021] In the mining flatbed car connecting device described in this utility model, when the vehicle speed changes, the piston rod moves relative to the cylinder body. The oil in the cylinder body of the hydraulic damper needs to flow through narrow gaps or channels in the rod chamber and rodless chamber to generate shear force and convert it into heat energy to slow down the movement speed. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the first connecting plate of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the second connecting plate of this utility model;

[0026] Figure 4 This is a schematic diagram of the hinge pin A.

[0027] Figure 5 This is a schematic diagram of a hydraulic damper.

[0028] In the diagram: 1. First Connector 1.1. First Main Connecting Ear 1.2. First Secondary Connecting Ear A 1.3. Secondary Connecting Ear A 1.4. Third Secondary Connecting Ear A 1.5. Fourth Secondary Connecting Ear A 1.6. Clearance Groove A 1.7. Hinge Pin A 2. Second Connector 2.1. Second Main Connecting Ear 2.2. First Secondary Connecting Ear B 2.3. Secondary Connecting Ear B 2.4. Third Secondary Connecting Ear B 2.5. Fourth Secondary Connecting Ear B 2.6. Clearance Groove B 2.7. Hinge Pin B 3. Hydraulic Damper 3.1. Rod End Joint 3.2. Cylinder Joint 3.3. Boss 3.4. Buffer Spring 3.5. Oil Pass Hole 3.6. Oil Filler Plug 4. First Connecting Plate 4.1. Corrugated Plate A 4.2. Connecting Plate A 4.3. Connecting Plate B 5. Second Connecting Plate 5.1. Corrugated Plate B 5.2. Connecting Plate C 5.3 Connecting plate D 6, collar 7, pin 8, external thread section 9, anti-reverse nut. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0030] Example 1, such as Figure 1-2 As shown, a mining flatbed car connecting device includes a first connecting head 1 and a second connecting head 2. One side of the first connecting head 1 is provided with a first main connecting ear 1.1 for rotatably connecting to the mining flatbed car. The other side of the first connecting head 1 is provided with multiple sets of auxiliary connecting ears A. One side of the second connecting head 2 is provided with a second main connecting ear 2.1 for rotatably connecting to the mining flatbed car. The other side of the first connecting head 1 is provided with multiple sets of auxiliary connecting ears B. The auxiliary connecting ears A are connected to a hydraulic damper 3, a first connecting plate 4, and a second connecting plate 5 via hinge pins A1.7. The other ends of the hydraulic damper 3, the first connecting plate 4, and the second connecting plate 5 are connected to the auxiliary connecting ears B via hinge pins B2.7. The first connecting plate 4 and the second connecting plate 5 are symmetrically arranged on both sides of the hydraulic damper 3. The first connecting plate 4 includes a corrugated plate A4.1, and both ends of the corrugated plate A4.1 are integrally formed with connecting plates A4.2 and B4.3, respectively.

[0031] When connecting two adjacent mining flatcars, the first main connecting ear 1.1 is rotatably connected to the first mining flatcar, and the second main connecting ear 2.1 is rotatably connected to the second mining flatcar. The connection point between the two adjacent mining flatcars is set as a hydraulic damper 3. By superimposing the hydraulic damper 3 with the first connecting plate 4 and the second connecting plate 5, the buffering of the tension or pressure generated between the two cars when the speed changes is improved at the connection point. The flexible connection reduces the damage to the connection point caused by impact, improves safety performance, and extends the service life of the connection point.

[0032] Example 2, as Figure 1-2 As shown, a mining flatbed car connecting device includes a first connecting head 1 and a second connecting head 2. One side of the first connecting head 1 is provided with a first main connecting ear 1.1 for rotatably connecting to the mining flatbed car. The other side of the first connecting head 1 is provided with multiple sets of auxiliary connecting ears A. One side of the second connecting head 2 is provided with a second main connecting ear 2.1 for rotatably connecting to the mining flatbed car. The other side of the first connecting head 1 is provided with multiple sets of auxiliary connecting ears B. The auxiliary connecting ears A are connected to a hydraulic damper 3, a first connecting plate 4, and a second connecting plate 5 via hinge pins A1.7. The other ends of the hydraulic damper 3, the first connecting plate 4, and the second connecting plate 5 are connected to the auxiliary connecting ears B via hinge pins B2.7. The first connecting plate 4 and the second connecting plate 5 are symmetrically arranged on both sides of the hydraulic damper 3. The first connecting plate 4 includes a corrugated plate A4.1, and both ends of the corrugated plate A4.1 are integrally formed with connecting plates A4.2 and B4.3, respectively.

[0033] Furthermore, referring to Figure 3 The first connecting plate 4 and the second connecting plate 5 are arranged opposite to each other. The second connecting plate 5 includes a corrugated plate B5.1, and connecting plates C5.2 and D5.3 are integrally formed at both ends of the corrugated plate B5.1. When the vehicle speed changes, the tension or pressure generated between the two vehicles will cause the corrugated plate B5.1 to undergo elastic deformation, which improves the buffering effect of the tension or pressure generated between the two vehicles when the vehicle speed changes at the connection point.

[0034] Furthermore, the secondary connecting ears A are provided in four sets, namely the first secondary connecting ear A1.2, the second secondary connecting ear A1.3, the third secondary connecting ear A1.4, and the fourth secondary connecting ear A1.5 integrally formed with the first connecting head 1. Each pair of adjacent secondary connecting ears A has a clearance groove A1.6. The secondary connecting ears B are provided in four sets, namely the first secondary connecting ear B2.2, the second secondary connecting ear B2.3, the third secondary connecting ear B2.4, and the fourth secondary connecting ear B2.5 integrally formed with the second connecting head 2. Each pair of adjacent secondary connecting ears B has a clearance groove B2.6.

[0035] Furthermore, the connecting plate A4.2 is rotatably mounted in the clearance groove A1.6 between the first connecting ear A1.2 and the second connecting ear A1.3 via a hinge pin A1.7; the telescopic end of the hydraulic damper 3 is rotatably mounted in the clearance groove A1.6 between the second connecting ear A1.3 and the third connecting ear A1.4 via a hinge pin A1.7; and one end of the wave plate B5.1 is rotatably mounted in the clearance groove A1.6 between the third connecting ear A1.4 and the fourth connecting ear A1.5 via a hinge pin A1.7. In section 6; the connecting plate B4.3 is rotatably mounted in the clearance groove B2.6 between the first connecting ear B2.2 and the second connecting ear B2.3 via the hinge pin B2.7; the other end of the hydraulic damper 3 is rotatably mounted in the clearance groove B2.6 between the second connecting ear B2.3 and the third connecting ear B2.4 via the hinge pin B2.7; and the connecting plate D5.3 is rotatably mounted in the clearance groove B2.6 between the third connecting ear B2.4 and the fourth connecting ear B2.5 via the hinge pin B2.7.

[0036] Furthermore, referring to Figure 4 The hinge pin A1.7 includes a pin body 7 that passes through the first connecting lug A1.2, the second connecting lug A1.3, the third connecting lug A1.4 and the fourth connecting lug A1.5. The upper end of the pin body 7 has a collar 6, and the other end of the pin body 7 has a threaded anti-reverse nut 9 threadedly connected to the external thread section 8.

[0037] Furthermore, the hinge pin B2.7 has the same structure as the hinge pin A1.7.

[0038] Furthermore, referring to Figure 5 The hydraulic damper 3 has a rod end connector 3.1 and a cylinder body connector 3.2 at both ends. A boss 3.3 is provided on the piston rod of the hydraulic damper 3, and a buffer spring 3.4 is fixed on the boss 3.3. The other end of the buffer spring 3.4 is fixed to the cylinder body of the hydraulic damper 3. An oil passage hole 3.5 is provided on the piston of the hydraulic damper 3, connecting the rod chamber and the rodless chamber of the hydraulic damper 3. Hydraulic oil is injected into the cylinder body of the hydraulic damper 3. The rod end connector 3.1 is rotatably mounted in the clearance groove A1.6 between the second connecting ear A1.3 and the third connecting ear A1.4 via a hinge pin A1.7. The cylinder body connector 3.2 is rotatably mounted in the clearance groove B2.6 between the second connecting ear B2.3 and the third connecting ear B2.4 via a hinge pin B2.7.

[0039] The function of the hydraulic damper 3 is to act as a safety buffer device to prevent damage to the mechanism caused by hard collisions during operation, thus providing a certain degree of protection. Specifically, when the vehicle speed changes, the piston rod moves relative to the cylinder. The oil in the cylinder of the hydraulic damper 3 needs to flow through narrow gaps or channels in the rod chamber and rodless chamber, generating shear force and converting it into heat energy to slow down the movement.

[0040] Furthermore, the cylinder of the hydraulic damper 3 has an oil replenishment hole, which is sealed with an oil replenishment plug 3.6.

[0041] Example 3 differs from Example 2 in that the hydraulic damper 3 is replaced with a traction belt, which can achieve the same purpose, but the effect is not as prominent as that of Example 2.

[0042] The mining flatbed car connecting device of this utility model, when connecting two adjacent mining flatbed cars, has the first main connecting ear rotatably connected to the first mining flatbed car, and the second main connecting ear rotatably connected to the second mining flatbed car. The connection point between the two adjacent mining flatbed cars is set as a hydraulic damper. By superimposing the hydraulic damper with the first connecting plate and the second connecting plate, the buffering of the tension or pressure generated between the two cars when the car speed changes is improved at the connection point. The flexible connection reduces the damage to the connection point caused by impact, improves safety performance, and extends the service life of the connection point.

[0043] The mining flatbed car connecting device of this utility model has rod end joints and cylinder joints at both ends of the hydraulic damper. The piston rod of the hydraulic damper is provided with a boss. The function of the hydraulic damper is to be a safety buffer device to prevent damage to the mechanism caused by hard collisions during operation, and it can play a certain degree of protection.

[0044] In the mining flatbed car connecting device described in this utility model, when the vehicle speed changes, the piston rod moves relative to the cylinder body. The oil in the cylinder body of the hydraulic damper needs to flow through narrow gaps or channels in the rod chamber and rodless chamber to generate shear force and convert it into heat energy to slow down the movement speed.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0046] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A connecting device for a mining flatbed truck, comprising a first connector and a second connector, characterized in that: The first connector has a first main connecting ear on one side for rotatably connecting to a mining flatbed car, and multiple sets of auxiliary connecting ears A on the other side. The second connector has a second main connecting ear on one side for rotatably connecting to a mining flatbed car, and multiple sets of auxiliary connecting ears B on the other side. The auxiliary connecting ears A are connected to a hydraulic damper, a first connecting plate, and a second connecting plate via hinge pins A. The other ends of the hydraulic damper, the first connecting plate, and the second connecting plate are connected to the auxiliary connecting ears B via hinge pins B. The first connecting plate and the second connecting plate are symmetrically arranged on both sides of the hydraulic damper. The first connecting plate includes a corrugated plate A, and the two ends of the corrugated plate A are integrally formed with connecting plate A and connecting plate B, respectively.

2. The mining flatbed car connecting device according to claim 1, characterized in that, The first connecting plate and the second connecting plate are arranged opposite to each other. The second connecting plate includes a corrugated plate B, and connecting plate C and connecting plate D are integrally formed at both ends of the corrugated plate B.

3. The mining flatbed car connecting device according to claim 2, characterized in that, The auxiliary connecting ears A are provided in four sets, namely the first auxiliary connecting ear A, the second auxiliary connecting ear A, the third auxiliary connecting ear A, and the fourth auxiliary connecting ear A, which are integrally formed with the first connecting head. There is a clearance groove A between each pair of adjacent auxiliary connecting ears A. The auxiliary connecting ears B are provided in four sets, namely the first auxiliary connecting ear B, the second auxiliary connecting ear B, the third auxiliary connecting ear B, and the fourth auxiliary connecting ear B, which are integrally formed with the second connecting head. There is a clearance groove B between each pair of adjacent auxiliary connecting ears B.

4. The mining flatbed car connecting device according to claim 3, characterized in that, The connecting plate A is rotatably mounted in the clearance groove A between the first and second connecting ears A via a hinge pin A. The telescopic end of the hydraulic damper is rotatably mounted in the clearance groove A between the second and third connecting ears A via a hinge pin A. One end of the wave plate B is rotatably mounted in the clearance groove A between the third and fourth connecting ears A via a hinge pin A. The connecting plate B is rotatably mounted in the clearance groove B between the first and second connecting ears B via a hinge pin B. The other end of the hydraulic damper is rotatably mounted in the clearance groove B between the second and third connecting ears B via a hinge pin B. The connecting plate D is rotatably mounted in the clearance groove B between the third and fourth connecting ears B via a hinge pin B.

5. The mining flatbed car connecting device according to claim 4, characterized in that, The hinge pin A includes a pin body that passes through the first set of connecting lugs A, the second set of connecting lugs A, the third set of connecting lugs A, and the fourth set of connecting lugs A. The upper end of the pin body has a collar, and the other end of the pin body has an external threaded section with a lock nut threaded on it.

6. The mining flatbed car connecting device according to claim 5, characterized in that, The hinge pin B has the same structure as the hinge pin A.

7. The mining flatbed car connecting device according to claim 6, characterized in that, The hydraulic damper has a rod end connector and a cylinder body connector at both ends. The piston rod of the hydraulic damper has a boss, and a buffer spring is fixed on the boss. The other end of the buffer spring is fixed to the cylinder body of the hydraulic damper. An oil passage hole is opened on the piston of the hydraulic damper, and the oil passage hole connects the rod chamber and the rodless chamber of the hydraulic damper. Hydraulic oil is injected into the cylinder body of the hydraulic damper. The rod end connector is rotatably installed in the clearance groove A between the second and third connecting lugs A through a hinge pin A. The cylinder body connector is rotatably installed in the clearance groove B between the second and third connecting lugs B through a hinge pin B.

8. The mining flatbed car connecting device according to claim 7, characterized in that, The cylinder of the hydraulic damper has an oil replenishment hole, which is sealed with an oil replenishment plug.

9. The mining flatbed car connecting device according to any one of claims 1-8, characterized in that, Replace the hydraulic damper with a traction belt.

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