A shock absorbing support device for a dump truck bed

Abstract

The utility model relates to a self -discharging car accessory technical field especially relates to a kind of shock-absorbing support device for self -discharging car hopper, it includes the crossbeam being connected with the frame fixedly, the upper portion of the crossbeam is provided with support beam, and the shock pad is provided between the crossbeam with the support beam;The crossbeam is provided with at least two guide holes along length direction, the support beam is fixed with guide rod in the position corresponding with the guide hole, the guide rod is slidably connected with the guide hole, and the bottom end of the guide rod is provided with the transverse lock pin that prevents the guide rod from falling off, the guide rod is sleeved with spring, and the both ends of the spring abut the crossbeam with the support beam;The support beam is provided with the bayonet that is engaged with the hopper bottom longitudinal beam.This utility model samples shock pad and spring cooperation shock-absorbing, can better reduce the vibration that hopper is subjected to, and through the bayonet to the hopper is carried out horizontal constraint, prevent hopper lateral tilting to cause damage to lift oil cylinder.

Description

Technical Field

[0001] This utility model relates to the technical field of dump truck accessories, and in particular to a shock-absorbing support device for dump truck beds. Background Technology

[0002] Besides the rear hinge, dump trucks typically have a shock-absorbing structure on the frame to support and absorb vibrations from the truck bed. Many existing shock-absorbing structures consist of several damping pads on the frame to reduce impact when the truck bed falls and during vehicle movement. This structure has the following drawbacks: 1. The damping pads are usually rubber or plastic, which are prone to aging and offer relatively low shock absorption, failing to effectively dampen the high-frequency, small vibrations of the truck bed; 2. Existing shock-absorbing devices usually only consider vertical damping, neglecting horizontal damping and constraint. When the truck bed tilts, it relies entirely on the rear hinge for constraint, with no lateral constraint at the front. This causes the tilting force to act on the lifting cylinder, damaging it and reducing its lifespan. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a shock-absorbing support device for dump truck beds, which uses a sampling spring and a shock-absorbing pad for dual shock absorption and applies lateral restraint to the truck bed to protect the lifting cylinder.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a shock-absorbing support device for a dump truck bed, including a crossbeam fixedly connected to the vehicle frame, a support beam provided above the crossbeam, and a shock-absorbing pad provided between the crossbeam and the support beam; the crossbeam is provided with at least two guide holes along its length, and a guide rod is fixed at the position corresponding to the guide hole on the support beam, the guide rod is slidably connected to the guide hole, and a transverse locking pin is provided at the bottom end of the guide rod to prevent the guide rod from falling off; a spring is sleeved on the guide rod, and the two ends of the spring abut against the crossbeam and the support beam; the support beam is provided with a locking slot that engages with the longitudinal beam at the bottom of the truck bed.

[0005] Preferably, two edge strips are welded to the top two sides of the crossbeam, and the shock-absorbing pad is embedded between the two edge strips.

[0006] Preferably, there are three guide holes and three guide rods, and a copper sleeve is fixed inside the guide hole.

[0007] Preferably, the support beam is a channel steel, three mounting plates are welded in the notch of the channel steel, the mounting plates and the bottom of the channel steel below are provided with coaxial through holes, one end of the guide rod is a smooth rod while the other end is a screw rod, a shaft shoulder is arranged between the smooth rod and the screw rod, the screw rod passes through the mounting plates from below and is fastened by screwing a nut, the spring is sleeved on the smooth rod, and two ends of the spring abut against the top of the cross beam and the shaft shoulder of the guide rod.

[0008] Preferably, the bayonet is of a "U" shape, and the tops of both sides of the U-shaped opening are chamfered to form a V-shape.

[0009] Preferably, the notch of the support beam is clamped with anticorrosive wood, and the opening size of the anticorrosive wood at the bayonet is smaller than the bayonet.

[0010] The beneficial effects of the utility model are as follows: the damping support device for the dump truck bucket comprises a cross beam fixedly connected with a vehicle frame, a support beam is arranged above the cross beam, and a damping pad is arranged between the cross beam and the support beam; the cross beam is provided with at least two guide holes along the length direction, guide rods are fixed at positions of the support beam corresponding to the guide holes, the guide rods are in sliding connection with the guide holes, a transverse lock pin for preventing the guide rods from falling off is arranged at the bottom end of each guide rod, a spring is sleeved on each guide rod, and two ends of the spring abut against the cross beam and the support beam; the support beam is provided with a bayonet clamped with a longitudinal beam at the bottom of the truck bucket. The utility model adopts the matching of the damping pad and the spring for damping, which can better reduce the vibration received by the truck bucket, and the bayonet is used for horizontally restraining the truck bucket, so as to prevent the lifting oil cylinder from being damaged when the truck bucket tilts laterally. Brief Description of the Drawings

[0011] Figure 1 is a perspective view of the damping support device for the dump truck bucket according to the utility model; Figure 2 is a front view of the damping support device for the dump truck bucket according to the utility model; Figure 3 is Figure 2 a partial cross-sectional view of .

[0012] Description of Reference Numerals in the Drawings: 1——Cross beam, 11——Guide hole, 12——Copper bush, 2——Support beam, 21——Bayonet, 22——Mounting plate, 3——Damping pad, 4——Guide rod, 5——Lock pin, 6——Spring, 7——Anticorrosive wood. Detailed Description of the Embodiments

[0013] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments, which are not intended to limit the scope of the embodiments of the utility model thereto.

[0014] As shown in Figures 1-3 As shown in the figure, a shock-absorbing support device for a dump truck bed in this embodiment includes a crossbeam 1 fixedly connected to the truck frame, a support beam 2 disposed above the crossbeam 1, and a shock-absorbing pad 3 disposed between the crossbeam 1 and the support beam 2; the crossbeam 1 has three guide holes 11 along its length, and the support beam 2 is fixed with a guide rod 4 at a position corresponding to the guide holes 11, the guide rod 4 is slidably connected to the guide holes 11, and a transverse locking pin 5 is provided at the bottom end of the guide rod 4 to prevent the guide rod 4 from falling off; the guide rod 4 is fitted with a spring 6, and the two ends of the spring 6 abut against the crossbeam 1 and the support beam 2; the support beam 2 is provided with a latch 21 that engages with the longitudinal beam at the bottom of the truck bed.

[0015] This embodiment uses a mining dump truck as an example. Because mining roads are rugged and uneven, the truck bed generates inertial forces in multiple directions due to inertia during vehicle operation, with the vertical and horizontal forces being particularly severe. This embodiment incorporates a vertical shock absorption mechanism and a horizontal restraint mechanism on the frame or chassis.

[0016] The system features three layers of vertical shock absorption: 1. Spring shock absorption: the spring effectively absorbs the high-frequency, small-amplitude vibrations in the truck bed; 2. Shock-absorbing pads: the shock-absorbing pads, made of high-density rubber or reinforced plastic sheets, effectively absorb the low-frequency, large-amplitude vibrations in the truck bed; 3. The support beam 2 in this embodiment is a channel steel with anti-corrosion wood 7 embedded in the channel, further enhancing the shock absorption effect.

[0017] In the horizontal direction, the support beam 2 is provided with a latch 21, which is "U" shaped, and the top of the two sides of the "U" shaped opening is beveled into a V shape, so that the truck bed can fall smoothly into the latch 21 when it is lowered, and engage the lower part of the longitudinal beam of the truck bed; in addition, the opening size of the anti-corrosion wood 7 at the latch 21 is smaller than the latch 21, which can isolate the truck bed from the support beam 2, prevent damage to the longitudinal beam of the truck bed, and better engage the longitudinal beam of the truck bed, thus providing soft fixation and providing shock absorption and restraint in the horizontal direction.

[0018] In addition, three mounting plates 22 are welded into the groove of the support beam 2. The mounting plates 22 and the bottom of the channel steel below are provided with coaxial through holes. One end of the guide rod 4 is a smooth rod and the other end is a screw rod. A shoulder is provided between the smooth rod and the screw rod. The screw rod passes through the mounting plate 22 from below and is fixed with a nut. The spring 6 is sleeved with the smooth rod. A copper sleeve 12 is fixed in the guide hole 11, and the guide rod 4 is slidably connected to the copper sleeve 12. When the truck bed falls, the guide rod 4 will slide down along the copper sleeve 12. The copper sleeve 12, because it abuts against the guide rod 4, will also provide lateral restraint to the guide rod 4, and thus provide lateral restraint to the support frame 2.

[0019] The structural principle is as follows: When the truck bed falls and touches the anticorrosive wood 7, the anticorrosive wood 7 acts as a buffer and isolates the metal collision, while the spring 6 acts as a shock absorber; as it falls further, the support beam 2 touches the shock-absorbing pad 3, and the shock-absorbing pad 3 also participates in the shock absorption; when the vehicle is moving, the truck bed will be subjected to inertial forces in the front, back, left, right, up, and down directions due to inertia. The front and back inertial forces are handled by the truck bed connecting hinges, while the up and down inertial forces will cause the truck bed to undulate, and the left and right inertial forces will cause the truck bed to swing left and right. These will cause instability and shaking of the truck bed, which is not conducive to the driving safety of the vehicle. Moreover, the left and right inertial forces will act on the lifting cylinder, causing lateral load on the cylinder, which may damage the lifting cylinder in severe cases. The triple vertical shock absorption and horizontal constraint of this embodiment can effectively reduce the shaking of the truck bed and prevent the truck bed from swinging left and right.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, and for the convenience of describing the technical solution, the front, back, left, right, top, middle, and bottom orientations are based on the accompanying drawings and are not a limitation on the protection scope of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the essence and scope of the technical solution of this utility model.

Claims

1. A shock-absorbing support device for a dump truck bed, characterized in that: comprising a cross beam fixedly connected to the vehicle frame, a support beam is arranged above the cross beam, and a shock absorption pad is arranged between the cross beam and the support beam; the cross beam is provided with at least two guide holes along the length direction, a guide rod is fixed at the position of the support beam corresponding to the guide hole, the guide rod is slidably connected with the guide hole, a transverse lock pin for preventing the guide rod from falling off is arranged at the bottom end of the guide rod, the guide rod is sleeved with a spring, and two ends of the spring abut against the cross beam and the support beam; the support beam is provided with a bayonet engaged with the longitudinal beam at the bottom of the cargo box.

2. The shock-absorbing support device for a dump truck bed according to claim 1, characterized in that: Two edge strips are welded on both sides of the top of the cross beam, and the shock absorption pad is embedded between the two edge strips.

3. A shock-absorbing support device for a dump truck bed according to claim 1, characterized in that: There are three guide holes and three guide rods respectively, and a copper sleeve is fixed in each guide hole.

4. A shock-absorbing support device for a dump truck bed according to claim 1, characterized in that: The support beam is channel steel, three mounting plates are welded in the notch of the channel steel, coaxial through holes are arranged on the mounting plates and the bottom of the channel steel below, one end of the guide rod is a smooth rod, the other end is a screw rod, a shaft shoulder is arranged between the smooth rod and the screw rod, the screw rod passes through the mounting plates from below and is fastened with a nut, and the spring is sleeved on the smooth rod.

5. A shock-absorbing support device for a dump truck bed according to claim 1, characterized in that: The bayonet is of a "U" shape, and the chamfers at the tops of both sides of the U-shaped opening are V-shaped.

6. A shock-absorbing support device for a dump truck bed according to claim 4, characterized in that: The notch of the support beam is engaged with preservative-treated wood, and the opening size of the preservative-treated wood at the bayonet is smaller than that of the bayonet.

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