CN201801328U - Outrigger clearance adjustment device - Google Patents

Abstract

The utility model discloses a landing leg clearance adjustment device, including the guide cylinder, the guide bar, clearance adjustment mechanism, guide bar one end and support fixed connection, the other end and guide cylinder hole swing joint, clearance adjustment mechanism sets up at guide cylinder outside lower extreme, including fixed adjustment pad, the supporting shoe, the backup pad, the adjustment pad, it is preceding, the back adjusting block, adjusting bolt, fixed adjustment pad sets up between guide cylinder and guide bar, the supporting shoe is fixed to be set up in the guide cylinder outside with fixed adjustment pad relative one side, adjustment pad one side supports and leans on the supporting shoe facade, it is interior, the coincide sets up in backup pad hole and guide cylinder outer wall hole around the external adjustment piece, adjusting bolt passes the supporting shoe, adjusting pad top is on external adjustment piece side end face. The utility model discloses simple structure, regulation clearance labour saving and time saving, the good reliability, maintenance, dismouting are also very convenient.

Description

Outrigger clearance adjustment device

technical field

The utility model relates to a gap adjusting device, in particular to a gap adjusting device for telescopic outriggers of engineering machinery, which belongs to the technical field of engineering machinery.

Background technique

In order to improve the stability of the whole machine during the operation of construction machinery, the whole machine is usually lifted off the ground by the outrigger mechanism, such as the outrigger mechanism of the truck crane, backhoe loader and heavy truck, which bear the weight and vibration of the whole machine during operation shock. The outrigger mechanism includes a guide rod and a guide cylinder, and the guide rod can move up and down in the guide cylinder so as to adjust the height of the whole machine relative to the ground. The guide rod is prone to wear during movement, which increases the gap between the guide rod and the guide cylinder. If the gap is too large, it will affect the supporting effect and mechanical stability of the whole machine, and even cause danger. The existing outrigger mechanism directly adjusts the internal clearance of the outrigger through the thread mechanism. Since the working environment of construction machinery is very harsh, the vibration and impact generated make the thread easy to loosen, and the adjustment of the internal clearance of the outrigger is unreliable. Unable to adjust.

European Patent Specifications EP0867566 and EP1243706 disclose a stabilizer leg and a wear-resistant pad for the leg. The stabilizer leg adopts a method in which a large-diameter bolt is engaged with a guide cylinder, and the end of the bolt directly abuts on the guide telescopic member. Rotate the bolt to adjust the clearance inside the leg, and at the same time, an anti-loosening part is provided on the bolt to prevent the bolt from loosening due to vibration and impact. However, the above two patent documents cannot continue to adjust the gap inside the legs. Although the large-diameter bolts of the above-mentioned patent have a large contact area with the telescopic member, which can effectively adjust the internal gap of the outrigger, a large rotational torque is required to adjust the gap in this way, and manual adjustment is very time-consuming and laborious. And it is very difficult to repair and disassemble after the large-diameter bolts are corroded.

Utility model content

The purpose of the utility model is to provide a leg gap adjustment device with simple structure, convenient maintenance, and time-saving and labor-saving adjustment of the gap.

The utility model is realized through the following technical solutions:

A leg gap adjustment device, including a guide cylinder, a guide rod, and a gap adjustment mechanism, one end of the guide rod is fixedly connected to the bracket, the other end of the guide rod extends into the inner hole of the guide cylinder, and is movably connected with the inner hole of the guide cylinder, The gap adjustment mechanism is arranged at the outer lower end of the guide cylinder. The gap adjustment mechanism includes a fixed backing plate, a support block, a support plate, an adjustment pad, an inner adjustment block, an outer adjustment block, and an adjustment bolt. The fixed backing plate is arranged between the guide cylinder and the guide rod, and the guide One side of the rod leans against the fixed backing plate, the support block is arranged on the outer side of the guide cylinder opposite to the fixed backing plate, and the support plate in the shape of a square is fixedly connected with the guide cylinder. A cavity of the support block is formed between the support block and the support plate, the adjustment pad is arranged in the cavity of the support block, and one side of the adjustment pad leans against the vertical surface of the support block. The inner adjustment block and the outer adjustment block are superimposed and arranged in the inner hole of the support plate and the outer wall hole of the guide cylinder. The end surface on the other side of the block is against the other side of the adjustment pad, and the adjustment bolt passes through the support block and the adjustment pad, and abuts on the other end surface of the adjustment block.

The purpose of this utility model can also be further realized by the following technical measures.

In the aforementioned leg gap adjustment device, the center of the adjustment block is provided with a threaded connection hole.

In the above-mentioned outrigger gap adjustment device, the middle part of the adjustment pad is provided with an inverted U-shaped groove, and the adjusting bolt passes through the inverted U-shaped groove to abut on the other end surface of the adjustment block, and the lower end surface of the adjustment pad is wedge-shaped.

The aforementioned supporting leg gap adjustment device, wherein the support block is an open-sided structure with three sides enclosed, and a threaded connection hole I is provided on it, and a support platform is provided at the bottom of the support block, and the adjustment pad is supported on the support platform. On, the top of the support block is also provided with an arc-shaped groove.

The utility model has a simple structure, adopts the combination of the adjustment pad and the thread adjustment mechanism, so that the adjustment bolt is pushed on the adjustment block, and a support block cavity is formed between the support block and the support plate, and the adjustment block is inserted between the support block and the support plate. Fill the cavity formed between them to adjust the gap between the guide rod and the guide cylinder, the guide cylinder can be locked on the required height position of the guide rod, and the guide cylinder and the guide rod can be easily unlocked. The contact area between the adjustment block and the guide rod is large, and the utility model tightens the adjustment block with a larger area by a small-diameter bolt to generate a larger positive pressure, which leads to an increase in the static friction between the guide cylinder and the guide rod, so that the guide cylinder, the guide rod The locking between the rods is reliable. The adjustment of the clearance can be realized easily and labor-savingly, avoiding the disadvantages that the existing large-diameter bolts are difficult to repair and disassemble after being corroded.

The advantages and characteristics of the invention are illustrated and explained by the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is an enlarged partial cross-sectional view of A direction in Fig. 1;

Fig. 3 is the enlarged structural representation of the utility model support block;

Fig. 4 is an enlarged schematic diagram of the structure of the utility model after the support block and the adjustment pad are assembled.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figures 1 to 4, the utility model includes a guide cylinder 1, a guide rod 2, and a gap adjustment mechanism 3. One end of the guide rod 2 is hinged with the bracket 7, and the other end extends into the inner hole of the guide cylinder 1. The guide cylinder 1 can be moved along the Guide rod 2 moves freely up and down. A gap adjustment mechanism 3 is respectively provided on the lower part of the two adjacent vertical surfaces outside the guide cylinder 1. The gap adjustment mechanism 3 includes a fixed backing plate 5, a support block 31, a support plate 34, an adjustment pad 32, an inner adjustment block 331, and an outer adjustment block. 332. The adjusting bolt 4 and the fixed backing plate 5 are made of elastic materials, and are arranged between the guide cylinder 1 and the guide rod 2. One side of the guide rod 2 leans against the fixed backing plate 5, the support block 31 is arranged on the outside of the guide cylinder 1 opposite to the fixed backing plate 5, and the support plate 34 is welded on the guide cylinder 1 in a square shape. The lower end of the adjustment pad 32 is supported on the support block 31, and one side of the adjustment pad 32 leans against the inside of the support block 31. The adjustment pad 32 can be processed into various thicknesses according to needs. When the rear adjustment block 332 is worn, it can be inserted into a suitable thickness The adjusting pad 32 eliminates the gap caused by wear. The inner adjustment block 331 and the outer adjustment block 332 are superimposed and placed in the inner hole of the support plate 34 and the guide cylinder 1, the inner adjustment block 331 passes through the wall of the guide cylinder 1 and abuts against the outside of the guide rod 2, and the outer adjustment block 332 One side leans against one side of the adjustment pad 32 . The adjusting bolt 4 is screwed on the supporting block 31 , one end of the bolt 4 passes through the supporting block 31 , and the adjusting pad 32 pushes against the other side of the outer adjusting block 332 . After one end of the bolt 4 is pushed against the outer adjustment block 332 to produce the inner cavity gap of the support block 31, an appropriate number of adjustment pads 32 are inserted into the inner cavity gap, and the bottom side of the last adjustment pad 32 is wedge-shaped, and is driven into the inner cavity of the support block 31 , Play a firm locking role, and then lock the adjusting bolt 4 with the nut 6.

The support block 31 is an open side structure and three sides enclosed structure. It is provided with a threaded connection hole I311. The bottom of the support block 31 is provided with a support platform 312. The adjustment pad 32 is supported on the support platform 312. The top of the support block 31 is also provided with an arc. The groove 313 is convenient for taking out the adjustment pad 32 during maintenance. The middle part of the adjustment pad 32 is provided with an inverted U-shaped groove 35 , and the adjusting bolt 4 passes through the inverted U-shaped groove 35 and abuts on the other end surface of the rear adjustment block 332 . The lower end surface of the adjustment pad 32 is wedge-shaped, which is convenient for installation and produces a certain pre-tightening force. Even when the entire gap adjustment mechanism 3 is installed, the wedge-shaped structure can be directly used to adjust the gap and generate a pre-tightening effect without pre-tightening the adjusting bolt 4 .

The centers of the inner adjustment block 331 and the outer adjustment block 332 are respectively provided with a threaded connection hole II333, which is coaxial with the threaded connection hole I311 on the support block 31, and the diameter of the threaded connection hole II331 is smaller than the diameter of the threaded connection hole I311. When replacing the inner and outer adjustment blocks, screw the bolts on the threaded connection hole II331, and pull the bolts to take out the adjustment blocks. The inner adjustment block 331 and the outer adjustment block 332 are made of elastic materials. In this embodiment, nylon is used, or the inner adjustment block 331 is made of elastic materials such as nylon, and the outer adjustment block 332 is made of metal materials.

In addition to the above-mentioned embodiments, the utility model can also have other implementation modes, and all technical solutions formed by equivalent replacement or equivalent transformation all fall within the scope of protection required by the utility model.

Claims (4)

1. A leg gap adjustment device, comprising a guide cylinder, a guide rod, and a gap adjustment mechanism, one end of the guide rod is fixedly connected to the bracket, and the other end of the guide rod stretches into the inner hole of the guide cylinder, and is movable with the inner hole of the guide cylinder connection, the gap adjustment mechanism is set at the lower end of the outer side of the guide cylinder; it is characterized in that: the gap adjustment mechanism includes a fixed backing plate, a support block, a support plate, an adjustment pad, an inner adjustment block, an outer adjustment block, and an adjustment bolt, The fixed backing plate is arranged between the guide cylinder and the guide rod, one side of the guide rod abuts against the fixed backing plate, and the support block is arranged on the outside of the guide cylinder on the side opposite to the fixed backing plate, The square-shaped support plate is fixedly connected with the guide cylinder; a support block cavity is formed between the support block and the support plate, the adjustment pad is arranged in the support block cavity, and one side of the adjustment pad is against the support block elevation Above, the inner adjustment block and the outer adjustment block are superimposed and arranged in the inner hole of the support plate and the outer wall hole of the guide cylinder, and the end surface of one side of the inner adjustment block passes through the wall of the guide cylinder and abuts against one side of the guide rod. The other side end surface of the outer adjustment block abuts against the other side of the adjustment pad, and the adjustment bolt passes through the support block and the adjustment pad, and abuts on the other side end surface of the adjustment block. 2. The leg gap adjustment device according to claim 1, wherein a threaded connection hole is provided in the center of the adjustment block. 3. The outrigger gap adjustment device according to claim 1, characterized in that: the middle part of the adjustment pad is provided with an inverted U-shaped groove, and the adjusting bolt passes through the inverted U-shaped groove and abuts on the end surface of the other side of the adjustment block , the end face of the lower end of the adjustment pad is wedge-shaped. 4. The leg gap adjustment device according to claim 1, characterized in that: the support block is a structure with one side open and three sides enclosed, a support platform is provided at the bottom of the support block, and the adjustment pad is supported on the support platform On, the top of the support block is also provided with an arc-shaped groove.

Images