NX70 car pulling hook

Abstract

The utility model relates to the technical field of truck transportation, and discloses an NX70 truck pulling hook which is used for being matched with a tension spring support, supporting a steel wire rope and guaranteeing that the tension spring support does not deform. The NX70 truck pulling hook comprises a fixing part used for being connected with an impact seat and a hanging part integrally formed and used for supporting the steel wire rope. The hanging part is of a groove structure with an upward opening, the groove structure comprises a supporting piece extending transversely, and the supporting piece is located below the steel wire rope and used for supporting the steel wire rope; the fixing part comprises an anti-disengaging boss used for being connected with the impact seat in a clamped mode, and the anti-disengaging boss penetrates through a stop iron installation hole in the impact seat and is clamped with the bottom of the impact seat. According to the tension spring support, the fixing component and the hanging component are matched, so that the steel wire rope can be effectively prevented from falling off accidentally, and the phenomenon that the tension spring support deforms due to improper stress of the steel wire rope in the process of pulling a vehicle is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to truck transportation technical field, concretely relates to a NX70 trailer hook. BACKGROUND

[0002] In the process of manufacturing the steel structure of the underframe of the NX70 type common vehicle (also known as NX70 railway truck, referred to as NX70 for short), in order to ensure the safe connection and efficient movement of the front and rear vehicles, the front and rear vehicles are usually fixedly connected together by a steel wire rope, and then the underframe assembly is moved on the production line track by traction of a winch to complete the transfer operation between processes and avoid possible safety hazards of the use of a crown block hoisting operation.

[0003] As shown in Figure 1 , the NX70 is provided with a tension spring support, which mainly serves to provide stable support for the related components of the vehicle and ensure that the relative positions between the components remain unchanged during transportation. However, due to the structural limitations, the steel wire rope can only be connected to the hook support beam bolt mounting hole on the traction beam by means of a shackle during the trailer operation. During the production process, it is found that the tension spring supports on the sides of the steel wire rope of some vehicles have been deformed due to external tension. Specifically, as shown in Figure 2 , after the vehicle is pulled into position by the steel wire rope, the steel wire rope will naturally sag and fall below the tension spring support due to the influence of gravity. During the next trailer operation, the steel wire rope will be tensioned and straightened by the tension force and will press upward on the short side below the tension spring support, thereby causing the tension spring support to bend and deform upward due to excessive local stress. This deformation not only affects the normal function of the tension spring support, but also may adversely affect the overall structural safety of the vehicle and the production efficiency. SUMMARY

[0004] The utility model intends to provide a NX70 trailer hook to solve the problem of easy deformation of the tension spring support in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the NX70 trailer hook is used to cooperate with the tension spring support, support the steel wire rope, and ensure that the tension spring support does not deform; it comprises a fixed component for connecting with the impact seat and a suspension component integrally formed for supporting the steel wire rope; the suspension component is a groove structure with an upward opening, the groove structure comprises a support sheet extending transversely, the support sheet is located below the steel wire rope and serves to support the steel wire rope; the fixed component comprises a anti-dropping protruding table for clamping the impact seat, the anti-dropping protruding table passes through the stop iron mounting hole on the impact seat and is clamped tightly with the bottom of the impact seat.

[0006] The principle of the scheme is: in actual application, the NX70 trailer hook (hereinafter referred to as the hook) is hung in the stop iron mounting hole on the impact seat to support the steel wire rope. Specifically, the anti-falling protruding platform is inserted into the stop iron mounting hole on the impact seat, so that the fixed part is firmly clamped with the impact seat, thereby driving the suspension part to lift the steel wire rope, that is, the steel wire rope is located in the groove structure and above the support piece, so that the steel wire rope will not fall below the tension spring support in a free state (i.e. under the influence of gravity), and at the same time during the trailer pulling process, the steel wire rope will be tensioned and moved upward, automatically disengaged from the support piece and located in the groove structure, thereby reducing the phenomenon of deformation of the tension spring support caused by improper stress of the steel wire rope during the trailer pulling process.

[0007] The advantages of the scheme are: (1) through the design of the suspension part, the steel wire rope can be lifted and limited in the groove structure, solving the problem that the steel wire rope is easy to fall below the tension spring support in a free state, ensuring that the steel wire rope always remains in the correct position, avoiding improper pressure of the steel wire rope on the tension spring support, reducing the risk of deformation of the tension spring support, and enhancing the stability of the tension spring support.

[0008] (2) The anti-falling protruding platform can hook the impact seat, ensuring the firm connection between the fixed part and the impact seat, effectively preventing the hook from accidentally falling off, and improving the stability of the overall structure of the hook.

[0009] (3) The structure of the hook in the scheme is simple, which not only makes the operation simple, but also reduces the installation time and complexity.

[0010] (4) The hook can be reused, reducing the frequent demand for purchasing new hooks, thereby reducing the long-term operating cost.

[0011] (5) The upward-opening groove design effectively limits the lateral and longitudinal movement of the steel wire rope, ensuring that the steel wire rope remains in the predetermined position and avoiding deformation of the tension spring support caused by the falling of the steel wire rope.

[0012] Preferably, as an improvement, the suspension part further comprises a first anti-skid piece and a second anti-skid piece, the second anti-skid piece being located on the right side of the first anti-skid piece; the first anti-skid piece is vertically connected to one side of the support piece, and the second anti-skid piece is obliquely connected to the other side of the support piece.

[0013] Beneficial effects: the first anti-skid piece, the second anti-skid piece and the support piece form a groove structure, which provides a clear position for the steel wire rope, reduces the risk of accidental sliding or loosening of the steel wire rope, and improves the effectiveness of the use of the hook.

[0014] Preferably, as an improvement, the groove structure is tapered inward from bottom to top; the first anti-skid piece is formed with the inner side of the support piece at an angle of 80-85 degrees; the height of the first anti-skid piece is 30-70 mm.

[0015] Beneficial effects: the height of the first anti-skid piece is set to facilitate the installation and removal of the steel wire rope, while providing sufficient depth to effectively prevent the steel wire rope from accidentally slipping out or jumping out of the groove edge during operation, increasing the effectiveness of use; the design of the groove structure tapered inward from bottom to top and the angle of the second anti-skid piece and the support piece connection makes it difficult for the steel wire rope to come out when placed in the groove; at the same time, when the steel wire rope contacts the second anti-skid piece and the support piece, it can provide a certain fixing force to prevent the steel wire rope from deviating or slipping, without being too close to the inclined angle formed by the second anti-skid piece and the support piece, avoiding the risk of being difficult to remove.

[0016] Preferably, as an improvement, the bottom surface of the NX70 trailer hook is flush with the bottom surface of the tension spring support; the NX70 trailer hook is located in front of the area for the steel wire rope to pass through.

[0017] Beneficial effects: the design of the position of the NX70 trailer hook provides an upward force to support the steel wire rope, avoiding the risk of the steel wire rope falling onto the tension spring support.

[0018] Preferably, as an improvement, the fixing part further comprises a vertically extending lower fixing piece and an upper fixing piece extending transversely from the upper end of the lower fixing piece; the lower fixing piece is used to pass through the stop iron mounting hole; the anti-falling protrusion is located on the lower right side of the lower fixing piece.

[0019] Beneficial effects: the design of the lower fixing piece and the anti-falling protrusion allows the hook to quickly and accurately pass through the stop iron mounting hole on the impact seat, and the anti-falling protrusion tightly clamps the bottom of the impact seat, enhancing the stability of the hook in use, and ensuring consistency and reliability of each installation, reducing operation time and complexity.

[0020] Preferably, as an improvement, the lower fixing piece is of a slope structure, and its cross section comprises a rectangle and an integral right-angled trapezoid, the right-angled trapezoid being located below the rectangle.

[0021] Beneficial effects: the design of the slope structure allows the lower fixing piece to quickly pass through the stop iron mounting hole, making the operation simple and reducing installation time and complexity.

[0022] Preferably, as an improvement, the suspension part and the fixing part are integrally connected through a connecting piece.

[0023] Beneficial effects: (1) The integrally formed hook has no welding points or other connecting parts, reducing the risk of breakage due to wear and tear and fatigue damage between the joints or welding points, and enhancing the overall structural strength and stability of the hook; (2) The integrally formed hook can more evenly distribute the load it bears, avoiding local stress concentration and further improving the carrying capacity and safety of the hook; (3) Simple to make and low in production cost.

[0024] Preferably, as an improvement, the connection between the fixing part and the connecting piece, and between the connecting piece and the suspension part, is an arc-shaped connection.

[0025] Beneficial effects: The arc-shaped connection can adapt to the natural shape and position of the steel wire rope and the impact seat, reducing wear and tear between the steel wire rope and the transition, and between the impact seat and the transition, and prolonging the service life of the hook; and enabling the transition to better cope with various mechanical loads, reducing the risk of deformation due to improper stress.

[0026] Preferably, as an improvement, the length of the upper fixing piece ranges from 50mm to 155mm, and the width of the upper fixing piece is 20mm; the width of the lower fixing piece is 14mm to 20mm, and the thickness of the lower fixing piece is 11mm.

[0027] Beneficial effects: The length of 50mm to 155mm and the width of 20mm, (1) can better clamp the impact seat, so that the upper fixing piece can closely fit the impact seat and is not prone to displacement and loosening; (2) can be used to enlarge the gap between the tension spring support and the impact seat, so that the steel wire rope is not prone to falling off the tension spring support, reducing the risk of deformation of the tension spring support. The thickness of the lower fixing piece ensures that the lower fixing piece can smoothly pass through the stop iron mounting hole and be tightly clamped in the stop iron mounting hole, preventing the occurrence of a large gap and avoiding the risk of movement or accidental falling due to the gap being too large; the lower fixing piece, when smoothly passing through the stop iron mounting hole, can clamp the bottom of the impact seat, making the hook less likely to come off.

[0028] Preferably, as an improvement, the length of the support piece ranges from 90mm to 120mm.

[0029] Beneficial effects: The length range provides a support range for the steel wire rope, ensuring sufficient support without being too long, eliminating the need to frequently adjust the position of the steel wire rope, and facilitating the placement and removal of the steel wire rope.

[0030] Beneficial effects of the present scheme: (1) The suspension part can support the steel wire rope, restricting it within the groove structure so that it does not fall below the tension spring support and does not press on the short side below the tension spring support, thereby reducing the risk of deformation of the tension spring support.

[0031] (2) The hook structure is simple, easy to manufacture, and low in cost.

[0032] (2) The hook can be reused.

[0033] (3) The hook and the impact seat are connected at a anti-falling protruding table, which can hook the impact seat and effectively prevent the hook from falling off accidentally.

[0034] (4) The hook is integrally formed, and the arc connection, size, and special design of the inclination angle are integrated. These designs not only make the hook stable on the impact seat, and the steel wire rope does not need to fall off, and the convenience of operation, easy to install and disassemble, at the same time, reduce the friction between the hook and the steel wire rope and the impact seat, effectively reduce the possibility of the hook wear and tear, prolong the service life of the hook.

[0035] (5) The placement position of the hook can limit the steel wire rope in the gap between the impact seat and the tension spring support, thereby avoiding the risk of deformation of the tension spring support. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 The structure schematic view of the tension spring support (normal) in the NX70 car hook provided by the embodiment of the utility model.

[0037] Figure 2 The structure schematic view of the tension spring support (deformation) in the NX70 car hook provided by the embodiment of the utility model.

[0038] Figure 3 The structure schematic view of the reverse "B" hook in the NX70 car hook provided by the embodiment of the utility model.

[0039] Figure 4 The use schematic view of the reverse "B" hook in the NX70 car hook provided by the embodiment of the utility model.

[0040] Figure 5 The structure schematic view of the "G" hook in the NX70 car hook provided by the embodiment of the utility model.

[0041] Figure 6 The use schematic view of the "G" hook in the NX70 car hook provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0042] The following will be further described in detail through specific embodiments:

[0043] The reference signs in the drawings of the specification include: the upper fixed sheet 11, the lower fixed sheet 12, the anti-falling protruding table 13, the connecting sheet 2, the supporting sheet 31, the first anti-skid sheet 32, and the second anti-skid sheet 33.

[0044] Embodiment one:

[0045] NX70 railway freight car (NX70 for short) includes impact seat, steel wire rope and tension spring support, NX70 draw hook is used as a component to support the steel wire rope when connecting two freight cars in front and back, when connecting two different freight cars in front and back through the steel wire rope, the NX70 draw hook is hung in the stop iron mounting hole on the impact seat for supporting the steel wire rope.

[0046] The embodiment is basically as shown in Figure 3 : NX70 draw hook, including a fixed part for connecting with the impact seat and a suspension part integrally formed for supporting the steel wire rope; the suspension part and the fixed part are integrally connected through the connecting sheet 2, forming a complete NX70 draw hook. The integral forming eliminates the joints or welding points, reduces the risk of breakage caused by wear and fatigue damage of these parts, thereby improving the reliability, durability, stability and firmness of the overall structure of the hook.

[0047] Specifically, the fixed part includes a vertically extending lower fixed sheet 12, an upper fixed sheet 11 extending transversely from the upper end of the lower fixed sheet 12, and an anti-drop protruding platform 13. The upper fixed sheet 11 is located on the left side of the lower fixed sheet 12, and the connection between the upper fixed sheet 11 and the lower fixed sheet 12 is arc-shaped connection, which can reduce the wear between the impact seat and the transition (i.e. the overlapping part between the upper fixed sheet 11 and the lower fixed sheet 12), prolong the service life of the hook, and at the same time can adapt to the natural shape and position of the impact seat, reduce the wear between them. The anti-drop protruding platform 13 is located on the right side of the lower fixed sheet 12, and the lower left corner of the anti-drop protruding platform 13 is arc-shaped connected with the lower fixed sheet 12, the anti-drop protruding platform 13 is used to clamp the bottom of the impact seat, which can hook the bottom of the impact seat, ensure the firm connection between the fixed part and the impact seat, enhance the stability and reliability of the hook fixing the impact seat, effectively prevent the hook from falling off accidentally, and the arc-shaped connection can reduce the wear between the anti-drop protruding platform 13 and the stop iron mounting hole when passing through the stop iron mounting hole. In this embodiment, the anti-drop protruding platform 13 is a square block.

[0048] The lower fixed sheet 12 is a slope structure. The slope structure of the lower fixed sheet 12 includes a rectangle and a right-angled trapezoid with the upper width being larger than the lower width, and the right-angled trapezoid is located below the rectangle, and the inclined side of the right-angled trapezoid faces inward. The inclination angle a between the inclined side and the lower base is 100-120 degrees, that is, the inclination angle a between the inclined side and the shorter base of the right-angled trapezoid is 100-120 degrees; the inclination angle b between the inclined side and the connecting position of the rectangle is 145-160 degrees. Specifically, in the embodiment, the inclination angle a is 111 degrees, and the inclination angle b is 159 degrees, forming a slope structure with the upper width being larger than the lower width. The structure and shape (i.e. the slope structure) of the lower fixed sheet 12 are designed so that the lower fixed sheet 12 can be accurately aligned and quickly and smoothly pass through the stop iron mounting hole on the impact seat, reducing the installation time and complexity. That is, during installation, the lower base of the right-angled trapezoid first passes through the stop iron mounting hole, and then the upper base and the rectangle are sequentially inserted into the stop iron mounting hole, and the installation process is simple.

[0049] In the embodiment, the length of the upper fixed sheet 11 is 59.5 mm, and the width of the upper fixed sheet 11 is 20 mm; the length of the lower fixed sheet 12 is 53 mm, the width of the rectangle in the lower fixed sheet 12 is 14.5 mm, and the width of the connecting position of the right-angled trapezoid to the anti-disengagement protruding platform 13 in the lower fixed sheet 12 is 17 mm; the thickness of the upper fixed sheet 11, the lower fixed sheet 12 and the anti-disengagement protruding platform 13 is 11 mm, and in the vertical direction, the distance between the lower fixed sheet 12 and the upper fixed sheet 11 is 33 mm. According to the parameter settings of the upper fixed sheet 11, the lower fixed sheet 12 and the anti-disengagement protruding platform 13, the lower fixed sheet 12 and the anti-disengagement protruding platform 13 can not only smoothly pass through and hang the stop iron mounting hole, but also closely fit the size of the stop iron mounting hole, so that it is not easy to shift and loosen, avoiding the phenomenon of disengagement of the hook; the upper fixed sheet 11 can closely fit the impact seat, and is not easy to shift and loosen.

[0050] The hanging part comprises a transversely extending support sheet 31 for supporting and placing the steel wire rope, the left side of the support sheet 31 is vertically connected upward with a first anti-skid sheet 32, and the right side of the support sheet 31 is obliquely connected upward with a second anti-skid sheet 33. The first anti-skid sheet 32 and the second anti-skid sheet 33 form an upwardly open groove structure with the support sheet 31, which provides a clear position for the steel wire rope, reduces the risk of accidental sliding or loosening of the steel wire rope, and improves the effectiveness of the hook use. The connection between the support sheet 31 and the first anti-skid sheet 32 and the connection between the support sheet 31 and the second anti-skid sheet 33 are both arc-shaped connections, which can adapt to the natural shape of the steel wire rope to reduce wear and tear between the steel wire rope and the transition, thereby prolonging the service life of the hook.

[0051] In the formed groove structure, the groove structure is inwardly contracted from the lower to the upper notch. The length of the support sheet 31 ranges from 90mm to 120mm, the height of the first anti-skid sheet 32 ranges from 30mm to 70mm, the vertical height of the second anti-skid sheet 33 (i.e. the height of the second anti-skid sheet 33 in the vertical direction when connected) ranges from 53mm to 105mm, and the oblique angle of the oblique connection is 80-85 degrees (i.e. the oblique angle formed between the inner side of the first anti-skid sheet and the inner side of the support sheet is 80-85 degrees). Specifically, in this embodiment, the length of the support sheet 31 is 85.5mm, the second spacing between the first anti-skid sheet 32 and the second anti-skid sheet 33 is 49.6mm, and the second spacing is the area for placing and supporting the steel wire rope. The second spacing is provided to facilitate the placement and removal of the steel wire rope. The height of the first anti-skid sheet 32 is 70mm, and the distance by which the first anti-skid sheet 32 protrudes above the support sheet 31 is 50mm. The protruding distance is used to prevent the steel wire rope from coming out of the first anti-skid sheet 32. The vertical height of the second anti-skid sheet 33 is 53.19, and the oblique angle of the oblique connection between the second anti-skid sheet 33 and the support sheet 31 is 85 degrees. The oblique angle is set so that when the steel wire rope comes into contact with the second anti-skid sheet 33 and the support sheet 31, a certain fixing force is provided to prevent the steel wire rope from shifting or sliding, without being too tightly fitted into the oblique angle to avoid the risk of being difficult to remove. In this embodiment, the width of the hanging part is 15mm-20mm, and the thickness is 11mm, i.e. the width of the first anti-skid sheet 32 is 15mm, the width of the support sheet 31 is 20mm, the width of the second anti-skid sheet 33 is 20mm, and the thickness of the first anti-skid sheet 32, the support sheet 31 and the second anti-skid sheet 33 is 11mm. The design of sufficient thickness and width increases the cross-sectional area of the hook, so that it can withstand greater load without being easily deformed or broken, while helping to disperse stress and reduce local stress concentration, thereby improving the durability and fatigue resistance of the hook in repeated use.

[0052] The connecting piece 2 is used to connect the suspension component and the fixing component. The suspension component and the fixing component are integrally connected through the connecting piece 2, thus forming a complete, integrally formed hook. Specifically, the upper end of the second anti-slip piece 33 is vertically connected to one end of the connecting piece 2, while the other end of the connecting piece 2 is vertically connected to the left end of the upper fixing piece 11, thus forming a complete and stable hook. The connections between the connecting piece 2 and the upper fixing piece 11, and between the connecting piece 2 and the second anti-slip piece 33, are all arc-shaped connections, which can adapt to the shape and position of the impact seat and reduce the friction between the contact surface of the connecting piece 2 and the impact seat, thereby reducing hook wear and extending the service life of the hook. In this embodiment, the height of the connecting piece 2 is 51.8mm, and the outer side of the connecting piece 2 contacts the left outer side of the impact seat. The first distance between the lower fixing piece 12 and the connecting piece 2 is 25mm. The first distance is the range in which the lower surface of the upper fixing piece 11 contacts the upper surface of the impact seat. The first distance, the lower fixing piece 12, and the connecting piece 2 can hold the impact seat in place, preventing the hook from accidentally detaching from the stop iron mounting hole of the impact seat.

[0053] Based on the above, the overall shape formed by the fixing component, connecting piece 2, and suspension component is an inverted "Z" shape. From left to right, the structure consists of a first anti-slip piece 32, a support piece 31, the first anti-slip piece 32 and connecting piece 2, an upper fixing piece 11, and a lower fixing piece 12. The lower end of the first anti-slip piece 32 is perpendicularly connected to the left end of the support piece 31, and the right end of the support piece 31 is obliquely connected to the lower end of the second anti-slip piece 33. The upper end of the second anti-slip piece 33 is vertically connected to the connecting piece 2, and the upper end of the connecting piece 2 is perpendicularly connected to the left end of the upper fixing piece 11. The right end of the upper fixing piece 11 is perpendicularly connected to the upper end of the lower fixing piece 12, thus forming an inverted "Z" shaped hook. The connections between the first anti-slip plate 32 and the support plate 31, between the support plate 31 and the second anti-slip plate 33, between the connecting plate 2 and the upper fixing plate 11, and between the upper fixing plate 11 and the lower fixing plate 12 are all arc-shaped. This allows them to adapt to the structure and shape of the impact seat and the wire rope, reducing friction between the hook and the impact seat, and between the hook and the wire rope, thereby extending the service life of the hook. The first gap between the connecting plate 2 and the lower fixing plate 12 is 25mm, used to hold the impact seat in place, preventing the hook from easily detaching from the stop iron mounting hole of the impact seat. The second gap between the first anti-slip plate 32 and the second anti-slip plate 33 is 48mm, used to support the wire rope.

[0054] The specific process of this embodiment is as follows:

[0055] Hook manufacturing: The hooks are made of Q345NQR2 material (i.e., leftover material from the side beam of the flatbed wagon). The hooks are cut from this leftover material and are formed in one piece, without seams or welds, thus improving the overall reliability, durability, stability, and sturdiness of the hook structure. Specifically, the overall thickness of the hooks is 11mm.

[0056] In use, as shown in Figure 4 The lower fixed piece 12 and the anti-falling protruding platform 13 are inserted into the stop iron mounting hole on the impact seat, the anti-falling protruding platform 13 hooks the bottom of the impact seat, the lower surface of the upper fixed piece 11 is in contact with the upper surface of the impact seat, the outer side of the connecting piece 2 is in contact with the left outer side of the impact seat, and the lower fixed piece 12 is in contact with the inside of the stop iron mounting hole, so that the impact seat can be clamped in the first gap between the connecting piece 2 and the lower fixed piece 12, providing a stable fixing effect, and the entire hook is hung on the impact seat and is not easy to fall off. The steel wire is held up and placed on the supporting piece 31, and the second gap between the first anti-skid piece 32 and the second anti-skid piece 33 is positioned and limited, ensuring that the steel wire will not fall off, to solve the problem that the steel wire is easy to fall off in a free state. At the same time, when pulling the cart, the steel wire is tensioned and moves upward, naturally leaving the position below the hook, and is limited within the height of the first anti-skid piece 32, which not only avoids the hook bearing additional tension and protects the hook and other components from unnecessary stress, but also prevents the steel wire from falling out of the groove.

[0057] When the hook is hung to support the steel wire, the bottom surface of the hook is flush with the bottom surface of the tension spring support, the hook is located in front of the steel wire, that is, the tension spring support is located behind the hook, the steel wire will pass through the hook and the steel wire in turn, and the steel wire is located in the groove of the hook and is limited in the groove, so that the steel wire is not easy to fall off below the tension spring support, thereby avoiding the risk of deformation of the tension spring support.

[0058] The technical solution adopted in this scheme is the optimal scheme obtained after multiple comparative studies. In the early stage, the following two schemes were considered:

[0059] Scheme one: after each time of pulling the cart, a special operator re-raises the steel wire into the gap between the tension spring support and the impact seat, but this method needs to assign an operator to each workstation, and during the pulling process, due to uneven and continuous pulling of the cart, the steel wire is repeatedly relaxed and tensioned, and there is still a risk of the steel wire falling out of the groove, so this method cannot completely solve the problem.

[0060] Scheme two: the steel wire is bound to one side of the tension spring support with iron wire to prevent the steel wire from falling off, although this method can prevent the steel wire from falling off, it also causes material waste, as new binding iron wire is needed each time, and in addition, additional operating costs are needed to untie the iron wire after each time of pulling the cart, increasing the complexity and time cost of the work.

[0061] Based on the test results above, a kind of NX70 cart hook is proposed in this scheme.

[0062] The present scheme specially designs a special anti-“e” hook that can hold the steel wire rope, avoids the accidental disengagement of the steel wire rope and the loss of the tension spring support, and reduces the risk of deformation of the tension spring support. Specifically, the design of the suspension component structure and parameters solves the problem that the steel wire rope is easy to disengage in a free state, so that the steel wire rope always remains in a proper position and is not easy to disengage, thereby avoiding the improper pressure of the steel wire rope on the tension spring support, reducing the risk of deformation of the tension spring support, and enhancing the stability of the tension spring support. The anti-disengagement protrusion 13 and the lower fixed rod 12 are designed to hook and tightly hold the impact seat, ensuring the firm connection between the fixed component and the impact seat, effectively preventing accidental disengagement of the hook, and improving the stability of the overall structure.

[0063] In addition, the hook of the present scheme is integrally formed, without seams or welding points, reducing the risk of fracture due to wear and fatigue damage at these positions, thereby improving the reliability, durability, stability, and firmness of the overall structure of the hook. Moreover, the hook structure is simple, easy to manufacture, and low in cost, which not only facilitates operation and effectively reduces operation time and complexity. The design of the overall structure, thickness, length, and width of the hook ensures that the hook has sufficient hardness and strength, is not easy to deform during use, and can be repeatedly used, thereby improving the economy and reliability of long-term use.

[0064] Example Two:

[0065] The difference between the present embodiment and the embodiment is that in the present embodiment, the shape of the hook is “G” shape, and the fastener component is directly connected with the suspension component and located on the same side. The length of the upper fixed sheet 11 is 135.6 mm, the length of the support sheet 31 is 90 mm, the height of the first anti-slip sheet 32 is 30 mm, the distance between the first anti-slip sheet 32 and the support sheet 31 is 10 mm, and the height of the second anti-slip sheet 33 is 105 mm.

[0066] Specifically, as shown in Figure 5 the fixed component and the suspension component are located on the same side, and the fixed component and the suspension component are directly connected by the second anti-slip sheet 33 to form a “G” shaped hook. The upper end of the second anti-slip sheet 33 is vertically connected with the left side of the upper fixed sheet 11, the length of the upper fixed sheet 11 is 135.6 mm, the third distance between the second anti-slip sheet 33 and the lower fixed sheet 12 is 102 mm, and in addition to being used to contact the upper surface of the impact seat to hold the impact seat, it can also be used to enlarge the gap between the tension spring support and the impact seat, so that the steel wire rope is not easy to fall off the tension spring support, reducing the risk of deformation of the tension spring support; the length of the support sheet 31 is 90 mm, the fourth distance between the first anti-slip sheet 32 and the second anti-slip sheet 33 is 60 mm, which is used to support and place the steel wire rope, and the distance between the first anti-slip sheet 32 and the support sheet 31 is 10 mm, which is used to prevent the steel wire rope from falling off.

[0067] In application, as shown in Figure 6 The lower fixed piece 12 and the anti-off protruding platform 13 are inserted into the stop iron mounting hole of the impact seat, the lower fixed piece 12 is in contact with the inside of the stop iron mounting hole, the anti-off protruding platform 13 hooks the bottom of the impact seat, the lower surface of the upper fixed piece 11 is in contact with the upper surface of the impact seat, the impact seat clamps the part of the third spacing between the second anti-slip piece 33 and the lower fixed piece 12, provides stable fixing effect, and enlarges the gap between the tension spring support and the impact seat, so that the steel wire rope is not easy to fall off the tension spring support, and the deformation risk of the tension spring support is reduced. The steel wire rope is placed on the supporting piece 31 and positioned and limited by the fourth spacing between the first anti-slip piece 32 and the second anti-slip piece 33, so as to ensure that it will not fall off, and the height design of the first anti-slip piece 32 can solve the problem that the pulled-out steel wire rope is easy to fall off in a free state. When the car pulling operation is carried out, the car pulling steel wire rope is tensioned and moves upward, naturally separates from the position of the supporting piece 31 in the hook and is limited in the groove, so that the supporting piece 31 avoids bearing additional tension, and the hook and other components are protected from unnecessary stress.

[0068] In the embodiment, the "G" shaped hook is adopted, the gap between the tension spring support and the impact seat is enlarged, so that the steel wire rope is not easy to fall off the tension spring support, and the deformation risk of the tension spring support is reduced.

[0069] The above is only an embodiment of the present application, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. NX70 train hitch, used for NX70 railway wagons, the NX70 railway wagon comprising a shock seat, a steel wire rope and a tension spring support; the NX70 train hitch is an accessory for supporting the steel wire rope when connecting two wagons in front and back, and when connecting different two wagons in front and back through the steel wire rope, the NX70 train hitch is hung in the stop iron mounting hole on the shock seat for supporting the steel wire rope; characterized in that: The application relates to a spring support matching device for supporting a steel wire rope and preventing the spring support from being deformed, which comprises a fixed part for connecting with an impact seat and a suspension part integrally formed for supporting the steel wire rope; the suspension part is a groove structure with an upward opening, and the groove structure comprises a support sheet extending horizontally, which is located below the steel wire rope and used for supporting the steel wire rope; the fixed part comprises an anti-falling protruding table for clamping the impact seat, which is installed through a stop iron mounting hole on the impact seat and clamped with the bottom of the impact seat.

2. The NX70 trailer hitch of claim 1, wherein: The groove structure further comprises a first anti-skid sheet and a second anti-skid sheet, and the second anti-skid sheet is located on the right side of the first anti-skid sheet; the first anti-skid sheet is vertically connected with one side of the support sheet, and the second anti-skid sheet is obliquely connected with the other side of the support sheet.

3. The NX70 trailer hitch of claim 2, wherein: The groove structure is contracted inward from the lower to the upper groove opening; the inner side of the first anti-skid sheet and the inner side of the support sheet form an inclined angle of 80-85 degrees; and the height of the first anti-skid sheet is 30mm-70mm.

4. The NX70 trailer hitch of claim 1, wherein: The bottom surface of the NX70 pull car hook is flush with the bottom surface of the spring support; and the NX70 pull car hook is located in front of the steel wire rope.

5. The NX70 trailer hitch of claim 1, wherein: The fixed part further comprises a vertically extending lower fixed sheet and an upper fixed sheet extending horizontally from the upper end of the lower fixed sheet; the lower fixed sheet is used for passing through the stop iron mounting hole; and the anti-falling protruding table is located on the lower right side of the lower fixed sheet.

6. The NX70 trailer hitch of claim 5, wherein: The lower fixed sheet is a bevel structure, and its cross section comprises a rectangle and an integral right-angled trapezoid, and the right-angled trapezoid is located below the rectangle.

7. The NX70 trailer hitch of claim 1, wherein: The suspension part and the fixed part are integrally connected through a connecting sheet.

8. The NX70 trailer hitch of claim 7, wherein: The connection among the fixed part, the connecting sheet and the suspension part is arc-shaped connection.

9. The NX70 trailer hitch of claim 5, wherein: The length of the upper fixed sheet ranges from 50mm to 155mm, the width of the upper fixed sheet is 20mm, the width of the lower fixed sheet ranges from 14mm to 20mm, and the thickness of the lower fixed sheet is 11mm.

10. The NX70 trailer hitch of claim 1, wherein: The length of the support sheet ranges from 90mm to 120mm.

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