High-strength stainless steel anti-falling locomotive pin for rail transit

Abstract

The present application relates to the technical field of locomotive pin, in particular to a high-strength stainless steel anti-falling locomotive pin for rail transit, which comprises a locomotive pin body, a reserved slot is formed on the surface of the locomotive pin body, a limiting pin rod is inserted into the surface of the reserved slot, an anti-deviation assembly is arranged between the reserved slot and the limiting pin rod, an installation slot is formed at one end of the limiting pin rod, a supporting limiting piece is arranged between the installation slot and the reserved slot, a push rod is movably inserted into the installation slot, and a traction clamping piece is arranged between one end of the push rod and the limiting pin rod; the beneficial effects are as follows: the high-strength stainless steel anti-falling locomotive pin for rail transit is provided with the limiting pin rod, the limiting pin rod is inserted into the reserved slot, is first limited by the anti-deviation assembly, then pushes the push rod to press the supporting limiting piece against the surface of the reserved slot, the limiting pin rod is prevented from falling off from the through hole, and the push rod is connected with the limiting pin rod through the traction clamping piece at the end, so that the push rod can be quickly mounted and dismounted on the limiting pin rod.

Description

Technical Field

[0001] This invention relates to the field of locomotive pins, specifically a high-strength stainless steel anti-detachment locomotive pin for rail transit. Background Technology

[0002] Rail transit refers to a type of transportation or system where vehicles need to run on specific tracks. The most typical rail transit system is the railway system, which consists of traditional trains and standard railways. With the diversified development of train and railway technologies, rail transit has taken on more and more types, not only covering long-distance land transportation but also being widely used in short- and medium-distance urban public transportation.

[0003] In the prior art, the locomotive pin is a commonly used pin structure in rail transit, which realizes the connection of two sets of hinged workpieces; usually, a cotter pin is installed in the opening on the surface of the locomotive pin to limit the locomotive pin after installation.

[0004] However, traditional cotter pins have low strength and are prone to bending and breaking during use. Once a cotter pin breaks, the lack of a limiting structure means that the locomotive pin may fall off. Summary of the Invention

[0005] The purpose of this invention is to provide a high-strength stainless steel anti-detachment locomotive pin for rail transit, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-strength stainless steel anti-detachment locomotive pin for rail transit, comprising a locomotive pin body, a reserved groove on the surface of the locomotive pin body, a limiting pin rod inserted into the surface of the reserved groove, an anti-deviation component between the reserved groove and the limiting pin rod, an installation groove at one end of the limiting pin rod, a top support limiting component between the installation groove and the reserved groove, and a push rod movably inserted inside the installation groove, with a traction locking component between one end of the push rod and the limiting pin rod.

[0007] Preferably, the reserved slots are provided in two sets, which are symmetrically distributed about the locomotive pin body, and the through-holes pass through the two sets of reserved slots, with the limiting pin rod passing through the through-holes.

[0008] Preferably, the anti-deviation component includes a collar, positioning holes, and positioning blocks. The collar is sleeved on the rod body of the fixed limiting pin. Multiple positioning holes are opened on the surface of the collar, and the positioning holes and positioning blocks correspond one-to-one. The positioning blocks are fixed on the surface of the reserved groove. After the collar is movably inserted into the reserved groove, the positioning blocks are inserted into the positioning holes.

[0009] Preferably, the top support limiting component includes a movable socket, a top support block, a traction strip, an elastic rubber traction belt, a connecting piece, a limiting groove, a limiting notch, and a stop bar. The movable socket is opened on the surface of the push rod and is connected to the mounting groove. There are two sets of movable sockets, which are symmetrically distributed about the mounting groove. The top support block is movably inserted into the movable socket. One end of the top support block that extends into the mounting groove has an inclined surface facing the opening of the mounting groove.

[0010] Preferably, the traction strip is fixed to the surface of the top support block, the elastic rubber traction band is positioned between the traction strips on the surfaces of the two sets of top support blocks, one end of the connecting piece is fixed to the middle of the elastic rubber traction band, and the other end of the connecting piece is fixed to the surface of the mounting groove.

[0011] Preferably, the limiting notch is formed on the surface of the top support block, and the stop bar passes through the limiting notch and is fixed to the surface of the movable socket. After the push rod is pushed into the mounting groove, the distance between the two sets of top support blocks increases. At this time, the elastic rubber traction belt is stretched, and the other end of the top support block extends out of the movable socket and abuts against the side wall of the reserved groove.

[0012] Preferably, the traction locking component includes a push plate, an elastic hanging piece, a locking strip, a locking groove, a pull ring, and a side groove. The push plate is fixed to one end of the push rod, the elastic hanging piece is fixed to the surface of the push plate, and there are two sets of elastic hanging pieces. The two sets of elastic hanging pieces are symmetrically distributed about the push rod, and the elastic hanging pieces are movably connected in the side groove, which is opened at one end of the limiting pin.

[0013] Preferably, the locking strip is a right-angled trapezoidal strip, the locking strip is fixed to the surface of the elastic hanging piece, the inclined surface of the locking strip is away from the push plate, the locking strip and the locking groove correspond to each other, the locking groove is opened on the surface of the side groove, the pull ring is fixed to the surface of the elastic hanging piece, and the pull ring and the locking strip are symmetrically distributed about the elastic hanging piece.

[0014] Preferably, after the push rod is pushed into the mounting groove, the elastic hanging piece is pushed into the side groove, and the retaining strip is inserted into the retaining groove to achieve anti-disengagement and limiting of the push rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention proposes to add a limiting pin to the high-strength stainless steel anti-detachment locomotive pin for rail transit. After the limiting pin is inserted into the reserved slot, it is first limited by the anti-deviation component, and then the push rod pushes the limiting component to the surface of the reserved slot to prevent the limiting pin from falling out of the slot. The push rod is connected to the limiting pin through the traction locking component at the end, which facilitates the quick installation and removal of the push rod on the limiting pin. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2This is a schematic diagram of the connection structure between the locomotive pin body and the limiting pin rod of the present invention;

[0019] Figure 3 This is a half-sectional schematic diagram of the structure of the present invention;

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B;

[0022] Figure 6 This is a schematic diagram of the reserved groove structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the limiting pin structure of the present invention;

[0024] Figure 8 This is a schematic diagram of the top support block structure of the present invention;

[0025] Figure 9 This is a schematic diagram of the connection structure between the push rod and the push plate of the present invention.

[0026] In the diagram: 1. Locomotive pin body; 2. Reserved slot; 3. Through hole; 4. Limiting pin; 5. Collar; 6. Positioning hole; 7. Positioning insert; 8. Mounting slot; 9. Movable insert; 10. Top support block; 11. Traction bar; 12. Elastic rubber traction belt; 13. Connecting piece; 14. Limiting slide groove; 15. Limiting notch; 16. Stop bar; 17. Push rod; 18. Push plate; 19. Elastic hanging piece; 20. Locking strip; 21. Locking groove; 22. Pull ring; 23. Side groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] Please see Figures 1-3This invention provides a technical solution: a high-strength stainless steel anti-detachment locomotive pin for rail transit, comprising a locomotive pin body 1, a reserved groove 2 on the surface of the locomotive pin body 1, a limiting pin 4 inserted into the surface of the reserved groove 2, an anti-deviation component between the reserved groove 2 and the limiting pin 4, an installation groove 8 at one end of the limiting pin 4, a top support limiting component between the installation groove 8 and the reserved groove 2, and a push rod 17 movably inserted inside the installation groove 8, with a traction locking component between one end of the push rod 17 and the limiting pin 4; the limiting pin 4 is installed on the locomotive pin body 1, and after the limiting pin 4 is inserted into the reserved groove 2, it is first limited by the anti-deviation component, and then the push rod 17 is pushed to push the top support limiting component against the surface of the reserved groove 2, preventing the limiting pin 4 from falling off the through-hole 3, and the push rod 17 is connected to the limiting pin 4 through the traction locking component at its end, facilitating quick installation and removal of the push rod 17 on the limiting pin 4.

[0030] Example 2

[0031] See attached document Figure 4 and Figure 6 Based on Embodiment 1, in order to achieve anti-rotation pre-limiting of the insertion port 3 of the limiting pin 4, the reserved slot 2 is provided with two sets. The two sets of reserved slots 2 are symmetrically distributed about the locomotive pin body 1, and the port 3 passes through the two sets of reserved slots 2. The limiting pin 4 passes through the port 3. The anti-deviation component includes a collar 5, a positioning hole 6 and a positioning block 7. The collar 5 is sleeved on the rod body of the fixed limiting pin 4. Multiple positioning holes 6 are opened on the surface of the collar 5. The positioning holes 6 and the positioning blocks 7 correspond one-to-one. The positioning blocks 7 are fixed on the surface of the reserved slot 2. After the collar 5 is movably inserted into the reserved slot 2, the positioning blocks 7 are inserted into the positioning holes 6.

[0032] Example 3

[0033] See attached document Figure 5 , Figures 7 to 9Based on Embodiment 2, in order to achieve anti-detachment limiting of the limiting pin 4 after it is inserted into the through-hole 3, the top support limiting component includes a movable insertion port 9, a top support block 10, a traction strip 11, an elastic rubber traction belt 12, a connecting piece 13, a limiting groove 14, a limiting notch 15, and a stop strip 16. The movable insertion port 9 is opened on the surface of the push rod 17, and the movable insertion port 9 is connected to the mounting groove 8. There are two sets of movable insertion ports 9, and the two sets of movable insertion ports 9 are symmetrically distributed about the mounting groove 8. The top support block 10 is movably inserted into the movable insertion port 9, and the end of the top support block 10 that extends into the mounting groove 8 has an inclined surface facing the opening of the mounting groove 8; The guide bar 11 is fixed to the surface of the top support block 10. The elastic rubber traction band 12 is positioned between the traction bars 11 on the surfaces of the two sets of top support blocks 10. One end of the connecting piece 13 is fixed to the middle of the elastic rubber traction band 12, and the other end of the connecting piece 13 is fixed to the surface of the mounting groove 8. The limiting notch 15 is opened on the surface of the top support block 10. The stop bar 16 passes through the limiting notch 15 and is fixed to the surface of the movable socket 9. After the push rod 17 is pushed into the mounting groove 8, the distance between the two sets of top support blocks 10 increases. At this time, the elastic rubber traction band 12 is tensioned, and the other end of the top support block 10 extends out of the movable socket 9 and abuts against the side wall of the reserved groove 2.

[0034] Example 4

[0035] Based on Embodiment 3, in order to achieve the anti-detachment limiting of the push rod 17, the traction locking component includes a push plate 18, an elastic hanging piece 19, a locking strip 20, a locking groove 21, a pull ring 22, and a side groove 23. The push plate 18 is fixed to one end of the push rod 17, and the elastic hanging piece 19 is fixed to the surface of the push plate 18. There are two sets of elastic hanging pieces 19, which are symmetrically distributed about the push rod 17. The elastic hanging pieces 19 are movably connected in the side groove 23, which is opened at one end of the limiting pin 4. The retaining strip 20 is a right-angled trapezoidal strip. The retaining strip 20 is fixed to the surface of the elastic hanging piece 19. The inclined surface of the retaining strip 20 is away from the push plate 18. The retaining strip 20 and the retaining groove 21 correspond to each other. The retaining groove 21 is opened on the surface of the side groove 23. The pull ring 22 is fixed to the surface of the elastic hanging piece 19. The pull ring 22 and the retaining strip 20 are symmetrically distributed about the elastic hanging piece 19. After the push rod 17 is pushed into the mounting groove 8, the elastic hanging piece 19 is pushed into the side groove 23, and the retaining strip 20 is inserted into the retaining groove 21 to achieve the anti-disengagement limit of the push rod 17.

[0036] In actual use, after the locomotive pin body 1 passes through the workpiece to be connected, the limiting pin 4 is inserted into the through hole 3 until the collar 5 is pushed into the reserved groove 2. At this time, the positioning block 7 is inserted into the positioning hole 6 to prevent the limiting pin 4 from rotating inside the through hole 3. Then, the push rod 17 is pushed into the mounting groove 8. During the pushing process, the push rod 17 simultaneously pushes the two sets of top support blocks 10, and the distance between the two sets of top support blocks 10 increases. The traction strips 11 on the surface of the two sets of top support blocks 10 are stretched with elastic rubber traction belts 12 until the push rod 17 is between the two sets of top support blocks 10. The top support blocks 10 abut against the side wall of the reserved groove 2 to prevent the limiting pin 4 from falling off the through hole 3. The elastic hanging piece 19 is pushed into the side groove 23, and the locking strip 20 is locked in the locking groove 21 to prevent the push rod 17 from falling off the mounting groove 8.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength stainless steel anti-falling locomotive pin for rail transit, comprising a locomotive pin body (1), a reserved slot (2) is formed on the surface of the locomotive pin body (1), and a limiting pin rod (4) is inserted into the surface of the reserved slot (2), characterized in that: The pre-reserved groove (2) and the limiting pin rod (4) are provided with a deviation prevention assembly, one end of the limiting pin rod (4) is provided with a mounting groove (8), the mounting groove (8) and the pre-reserved groove (2) are provided with a supporting limiting piece, and the inside of the mounting groove (8) movably inserts a push rod (17), and the one end of the push rod (17) and the limiting pin rod (4) are provided with a traction clamping piece; the deviation prevention assembly comprises a sleeve ring (5), a positioning hole (6) and a positioning plug (7), the sleeve ring (5) is sleeved and fixed on the rod body of the limiting pin rod (4), a plurality of positioning holes (6) are formed in the surface of the sleeve ring (5), the positioning holes (6) and the positioning plug (7) are one-to-one corresponding, the positioning plug (7) is fixed on the surface of the pre-reserved groove (2), after the sleeve ring (5) is movably inserted into the pre-reserved groove (2), the positioning plug (7) is inserted into the positioning hole (6); the supporting limiting piece comprises a movable socket (9), a supporting block (10), a traction strip (11), an elastic rubber traction belt (12), a connecting sheet (13), a limiting sliding groove (14), a limiting notch (15) and a blocking strip (16), the movable socket (9) is formed in the surface of the limiting pin rod (4), the movable socket (9) is communicated with the mounting groove (8), the movable socket (9) is provided with two groups, the two groups of movable sockets (9) are symmetrically distributed about the mounting groove (8), the supporting block (10) is movably inserted into the movable socket (9), and one end of the supporting block (10) extending into the mounting groove (8) is provided with an inclined surface, and the inclined surface faces the slot of the mounting groove (8); the traction clamping piece comprises a push plate (18), an elastic hanging sheet (19), a clamping strip (20), a clamping groove (21), a pull ring (22) and an edge groove (23), the push plate (18) is fixed on one end of the push rod (17), the elastic hanging sheet (19) is fixed on the surface of the push plate (18), the elastic hanging sheet (19) is provided with two groups, the two groups of elastic hanging sheets (19) are symmetrically distributed about the push rod (17), and the elastic hanging sheet (19) is movably connected in the edge groove (23), and the edge groove (23) is formed in one end of the limiting pin rod (4).

2. The high-strength stainless steel anti-extraction railcar pin of claim 1, wherein: The pre-reserved groove (2) is provided with two groups, the two groups of pre-reserved grooves (2) are symmetrically distributed about the locomotive pin body (1), and the through hole (3) penetrates the two groups of pre-reserved grooves (2), and the limiting pin rod (4) penetrates the through hole (3).

3. The high-strength stainless steel anti-extraction railcar pin of claim 1, wherein: The traction strip (11) is fixed on the surface of the supporting block (10), the elastic rubber traction belt (12) is fixed between the traction strips (11) on the surfaces of the two groups of supporting blocks (10), one end of the connecting sheet (13) is fixed in the middle of the elastic rubber traction belt (12), and the other end of the connecting sheet (13) is fixed on the surface of the mounting groove (8).

4. The high-strength stainless steel anti-extraction railcar pin of claim 3, wherein: The limiting notch (15) is formed in the surface of the supporting block (10), the blocking strip (16) penetrates the limiting notch (15) and is fixed on the surface of the movable socket (9), and the push rod (17) is pushed into the mounting groove (8) to extrude the two groups of supporting blocks (10) to increase the distance therebetween, at this time, the elastic rubber traction belt (12) is stretched, and the other end of the supporting block (10) extends out of the movable socket (9) and abuts against the side wall of the pre-reserved groove (2).

5. The high-strength stainless steel anti-extraction railcar pin of claim 4, wherein: The card strip (20) is a right trapezoidal strip, the card strip (20) is fixed on the surface of the elastic hanging piece (19), the inclined surface of the card strip (20) is away from the push plate (18), the card strip (20) corresponds to the card slot (21), the card slot (21) is arranged on the surface of the side groove (23), the pull ring (22) is fixed on the surface of the elastic hanging piece (19), and the pull ring (22) and the card strip (20) are symmetrically distributed about the elastic hanging piece (19).

6. The high-strength stainless steel anti-extraction railcar pin of claim 5, wherein: When the push rod (17) is pushed into the mounting groove (8), the elastic hanging piece (19) is pushed into the side groove (23), and the card strip (20) is inserted into the card slot (21), so that the push rod (17) is prevented from being limited in position.

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