CN217055805U

CN217055805U - Bidirectional impact-proof hydraulic telescopic oil cylinder for lorry-mounted crane

Info

Publication number: CN217055805U
Application number: CN202122062569.9U
Authority: CN
Inventors: 喻洁; 黄彦; 蒋春燚
Original assignee: Wuhan Jiangrong Intelligent Engineering Co ltd
Current assignee: Wuhan Jiangrong Intelligent Engineering Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-07-26
Anticipated expiration: 2031-08-30

Abstract

The utility model discloses a bidirectional impact-resistant hydraulic telescopic oil cylinder for a lorry-mounted crane, which comprises a base and a cylinder body fixedly connected to the top of the base, wherein the surface of the cylinder body is fixedly connected with the top of the base through a support frame, a lower protection mechanism is arranged inside the cylinder body, a piston rod is movably connected inside the cylinder body, and an upper protection mechanism is arranged at the top end of the piston rod; upper portion protection machanism includes the sliding block, and the top threaded connection of sliding block has the fixed block, the surperficial swing joint of fixed block has the rubber circle, the utility model relates to a hydraulic telescoping cylinder technical field. According to the bidirectional impact-resistant hydraulic telescopic oil cylinder for the lorry-mounted crane, the problem that the top end of the piston rod and the bottom of the inner wall of the cylinder body are damaged due to impact force can be solved by arranging the upper protection mechanism and the lower protection mechanism, the service life of the oil cylinder is prolonged, and good conditions are created for normal use of a follow-up oil cylinder.

Description

Bidirectional impact-proof hydraulic telescopic oil cylinder for lorry-mounted crane

Technical Field

The utility model relates to a hydraulic telescoping cylinder technical field specifically is a hydraulic telescoping cylinder of two-way protecting against shock for lorry crane.

Background

The telescopic hydraulic cylinder is a hydraulic cylinder with a multi-stage sleeve-shaped piston rod and can obtain a long working stroke, the telescopic hydraulic cylinder is also called a multi-stage hydraulic cylinder, when pressure oil enters from a rodless cavity, a cylinder barrel with the largest effective area of a piston begins to extend, when the pressure oil reaches a terminal point, a cylinder barrel with the second effective area of the piston begins to extend, the telescopic hydraulic cylinder sequentially extends from large to small, the long working stroke can be obtained, and the extension speed is higher as the effective area of the extending cylinder barrel is smaller.

When the inner piston rod is lifted upwards in the using process of the hydraulic telescopic oil cylinder, impact force generated on the top part is large, meanwhile, the piston rod is easy to interfere with the bottom of the inner wall of the cylinder body by external force and collide with the bottom of the inner wall of the cylinder body, the hydraulic telescopic oil cylinder is easy to damage, a bidirectional impact-resistant structure is not arranged on the existing hydraulic telescopic oil cylinder, and the service life of the oil cylinder is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a flexible hydro-cylinder of two-way protecting against shock for lorry crane has solved when the inside piston rod of hydro-cylinder upwards pushes up, and the impact force that produces top part is great, and the piston rod receives external force intervention easily and collides bottom the cylinder body inner wall simultaneously to cause the problem that hydraulic cylinder damaged.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a two-way flexible hydro-cylinder of hydraulic pressure of protecting against shock for lorry crane, includes base and fixed connection in the cylinder body at base top, the top fixed connection of support frame and base is passed through on the surface of cylinder body, the inside of cylinder body is provided with lower part protection machanism, the inside swing joint of cylinder body has the piston rod, and the top of piston rod is provided with upper portion protection machanism.

Upper portion protection machanism includes the sliding block, and the top threaded connection of sliding block has the fixed block, the surperficial swing joint of fixed block has the rubber circle, the recess has been seted up on the top of piston rod, and the bottom fixedly connected with buffer spring of recess inner wall, buffer spring's top fixedly connected with runs through to the inside buffer beam of sliding block, and the buffer beam is located the inside one end of sliding block and the top fixed connection of sliding block inner wall.

Preferably, the tops of the two sides of the surface of the piston rod are fixedly connected with a convex block, and the inner wall of the sliding block is connected with the surface of the convex block in a sliding mode through a sliding groove.

Preferably, the lower part protection mechanism includes the turning block, the fixed slot with turning block looks adaptation is seted up to the inside of base, and the bottom fixedly connected with of turning block dials the piece, the surface of turning block and the inner wall threaded connection of fixed slot.

Preferably, the bottom of the shifting block is provided with a through hole, the top of the rotating block is provided with a movable groove, and the bottom of the inner wall of the movable groove is fixedly connected with an arc-shaped plate penetrating through the top of the movable groove through an air spring.

Preferably, the top fixedly connected with buffering ball of arc, the positive both sides of arc all rotate and are connected with the connecting rod.

Preferably, the equal fixedly connected with dead lever in bottom at activity inslot wall both sides, and the surperficial sliding connection of dead lever has the movable block, the bottom of connecting rod rotates with the top of movable block to be connected, the fixed surface that just is located the dead lever between the one side that activity inslot wall and movable block are relative is connected with clamping spring.

Advantageous effects

The utility model provides a two-way protecting against shock's hydraulic telescoping cylinder for lorry crane. Compared with the prior art, the method has the following beneficial effects:

(1) the bidirectional impact-resistant hydraulic telescopic oil cylinder for the lorry-mounted crane has the advantages that the problem that the top end of the piston rod and the bottom of the inner wall of the cylinder body are damaged due to impact force can be solved by arranging the upper protection mechanism and the lower protection mechanism, the service life of the oil cylinder is prolonged, and good conditions are created for normal use of a follow-up oil cylinder.

(2) This two-way protecting against shock's hydraulic telescoping cylinder for lorry crane has the fixed block through the top threaded connection of sliding block, and the surperficial swing joint of fixed block has the rubber circle, can realize being convenient for to change the rubber circle after wearing and tearing, avoids the top of fixed block and the wearing and tearing that part direct contact caused the part, has the effect of buffer protection.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

fig. 2 is a sectional view of the sliding block structure of the present invention;

fig. 3 is a cross-sectional view of the cylinder structure of the present invention.

In the figure: 1-base, 2-cylinder body, 3-support frame, 4-lower part protection mechanism, 41-fixed groove, 42-rotating block, 43-toggle block, 44-through hole, 45-movable groove, 46-arc plate, 47-air spring, 48-buffer ball, 49-connecting rod, 410-fixed rod, 411-movable block, 412-clamping spring, 5-upper part protection mechanism, 51-sliding block, 52-fixed block, 53-rubber ring, 54-groove, 55-buffer spring, 56-buffer rod, 57-convex block, 6-piston rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a bidirectional impact-resistant hydraulic telescopic oil cylinder for a lorry-mounted crane comprises a base 1 and a cylinder body 2 fixedly connected to the top of the base 1, wherein the surface of the cylinder body 2 is fixedly connected with the top of the base 1 through a support frame 3, a lower protection mechanism 4 is arranged inside the cylinder body 2, the lower protection mechanism 4 comprises a rotating block 42, a fixed groove 41 matched with the rotating block 42 is formed inside the base 1, a poking block 43 is fixedly connected to the bottom of the rotating block 42, a through hole 44 is formed in the bottom of the poking block 43, the rotating block can be conveniently rotated out of the cylinder body 2 through the poking block 43 by a tool used by a person due to the arrangement of the through hole 44, a movable groove 45 is formed in the top of the rotating block 42, an arc-shaped plate 46 penetrating through the top of the movable groove 45 is fixedly connected to the bottom of the inner wall of the movable groove 45 through an air spring 47, fixing rods 410 are fixedly connected to the bottoms of two sides of the inner wall of the movable groove 45, and the sliding surface of dead lever 410 is connected with movable block 411, the bottom of connecting rod 49 rotates with the top of movable block 411 to be connected, the fixed surface that just is located dead lever 410 between the relative one side of movable groove 45 inner wall and movable block 411 is connected with clamping spring 412, the top fixedly connected with cushion ball 48 of arc 46, the positive both sides of arc 46 all rotate and are connected with connecting rod 49, the surface of turning block 42 and the inner wall threaded connection of fixed slot 41, the inside swing joint of cylinder body 2 has piston rod 6, and the top of piston rod 6 is provided with upper portion protection machanism 5, the equal fixedly connected with lug 57 in top of the surperficial both sides of piston rod 6, the sliding surface that the inner wall of sliding block 51 passes through spout and lug 57 is connected.

Upper portion protection machanism 5 includes sliding block 51, and sliding block 51's top threaded connection has fixed block 52, fixed block 52's surface swing joint has rubber circle 53, can realize being convenient for change rubber circle 53 after wearing and tearing, avoid fixed block 52's top and the wearing and tearing that part direct contact caused the part, the effect that has the buffering protection, recess 54 is seted up on the top of piston rod 6, and the bottom fixedly connected with buffer spring 55 of recess 54 inner wall, buffer spring 55's top fixedly connected with runs through to the inside buffer beam 56 of sliding block 51, and buffer beam 56 is located the inside one end of sliding block 51 and the top fixed connection of sliding block 51 inner wall.

During the use, when cylinder body 2 uses, piston rod 6 is the jacking that makes progress, when the impact force at piston rod 6 top is great, rubber ring 53 contacts with the top part in advance, the impact force can make spout on the sliding block 51 along lug 57 downstream, at this moment, buffer bar 56 on the sliding block 51 moves down along recess 54, can avoid the damage that the impact force led to the fact to piston rod 6 through the setting of buffer spring 55, rubber ring 53 can change, simultaneously when buffer ball 48 top received great pressure, can drive arc 46 downstream, at this moment, connecting rod 49 drives movable block 411 and moves along dead lever 410, cooperation air spring 47 and clamping spring 412 set up can play the effect of stabilizing support to arc 46, avoid 6 bottoms of piston rod and 2 inner wall bottoms to bump.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. The utility model provides a flexible hydro-cylinder of hydraulic pressure of two-way protecting against shock for lorry crane, includes base (1) and fixed connection in cylinder body (2) at base (1) top, the top fixed connection of support frame (3) and base (1), its characterized in that are passed through to the surface of cylinder body (2): a lower protection mechanism (4) is arranged inside the cylinder body (2), a piston rod (6) is movably connected inside the cylinder body (2), and an upper protection mechanism (5) is arranged at the top end of the piston rod (6);

upper portion protection machanism (5) are including sliding block (51), and the top threaded connection of sliding block (51) has fixed block (52), the surperficial swing joint of fixed block (52) has rubber circle (53), the top of piston rod (6) is seted up flutedly (54), and the bottom fixedly connected with buffer spring (55) of recess (54) inner wall, the top fixedly connected with of buffer spring (55) runs through to inside buffer beam (56) of sliding block (51), and buffer beam (56) are located the inside one end of sliding block (51) and the top fixed connection of sliding block (51) inner wall.

2. The bidirectional impact-resistant hydraulic telescopic cylinder for the lorry-mounted crane according to claim 1, characterized in that: the top of the two sides of the surface of the piston rod (6) is fixedly connected with a convex block (57), and the inner wall of the sliding block (51) is in sliding connection with the surface of the convex block (57) through a sliding groove.

3. The bidirectional impact-resistant hydraulic telescopic cylinder for the lorry-mounted crane according to claim 1, characterized in that: the lower portion protection mechanism (4) comprises a rotating block (42), a fixing groove (41) matched with the rotating block (42) is formed in the base (1), a shifting block (43) is fixedly connected to the bottom of the rotating block (42), and the surface of the rotating block (42) is in threaded connection with the inner wall of the fixing groove (41).

4. The bidirectional impact-resistant hydraulic telescopic cylinder for the lorry-mounted crane according to claim 3, characterized in that: a through hole (44) is formed in the bottom of the poking block (43), a movable groove (45) is formed in the top of the rotating block (42), and the bottom of the inner wall of the movable groove (45) is fixedly connected with an arc-shaped plate (46) penetrating through the top of the movable groove (45) through an air spring (47).

5. The bidirectional impact-resistant hydraulic telescopic cylinder for the lorry-mounted crane according to claim 4, characterized in that: the top fixedly connected with cushion ball (48) of arc (46), the positive both sides of arc (46) all rotate and are connected with connecting rod (49).

6. The bidirectional impact-resistant hydraulic telescopic cylinder for the lorry-mounted crane according to claim 5, characterized in that: the equal fixedly connected with dead lever (410) in bottom of activity groove (45) inner wall both sides, and the surperficial sliding connection of dead lever (410) has movable block (411), the bottom of connecting rod (49) rotates with the top of movable block (411) to be connected, the fixed surface that just is located dead lever (410) between the one side that activity groove (45) inner wall and movable block (411) are relative is connected with clamping spring (412).