CN209617301U - A kind of device convenient for semitrailer replacement spare tyre - Google Patents

Abstract

The utility model discloses a kind of devices convenient for semitrailer replacement spare tyre, it is related to the technical field of semitrailer, it includes chassis, the chassis lower surface is fixedly connected with multiple crossbeams along chassis width direction, the U-board being arranged among crossbeam along chassis length direction is fixedly connected between intermediate two crossbeams, the U-board is downwardly open and is fixedly connected with pneumatic cylinder on its surface under, the piston rod of the pneumatic cylinder is straight down, the piston rod is hinged with multiple fixed jaws at the identical height and position of same circumference along piston rod length direction close to bottom end, the fixed jaw can be radially unfolded along piston rod, the fixed jaw is fixedly connected by bolt with spare tyre after opening.The utility model has the advantages that being capable of quick-replaceable spare tyre.

Description

A kind of device convenient for semitrailer replacement spare tyre

Technical field

The utility model relates to the technical fields of semitrailer, more particularly, to a kind of dress convenient for semitrailer replacement spare tyre It sets.

Background technique

Semitrailer is a kind of transport vehicle of heavy type, compared with monomer-type automobile, has efficient, economical, energy conservation, ring The advantages of guarantor, semitrailer are that prevailing traffic volume is big, and is not easy the large cargo split, and frequent long-distance transportation, this Importance of the means of transport in logistics and transportation industry is higher and higher.

Spare tyre is exactly to prepare a spare tyre to vehicle, once that wheel is blown out or out of joint, spare tyre is just It easily and timely replaces, automobile is just unlikely to midway and casts anchor.Since semitrailer spare tyre is higher from basal surface position and very heavy, people Work disassembly it is highly difficult, therefore generally lifter can all be installed under chassis of semi-trailer come achieve the purpose that replacement spare tyre, it is existing Lifter is generally used chain-type, especially laborious when going up and down spare tyre, and tire is changed on road can be pretty troublesome, and can also be through Chain is commonly encountered around the case where not getting off, influences the efficiency for changing tire and transport.

Utility model content

The purpose of the utility model is to provide it is a kind of convenient for semitrailer replacement spare tyre device, have can quick-replaceable it is standby The advantages of tire.

The above-mentioned purpose of utility model of the utility model has the technical scheme that

A kind of device convenient for semitrailer replacement spare tyre, including chassis, the chassis lower surface are solid along chassis width direction Surely multiple crossbeams are connected with, is fixedly connected between intermediate two crossbeams and is arranged among crossbeam along chassis length direction U-board, the U-board is downwardly open and is fixedly connected with pneumatic cylinder, the piston of the pneumatic cylinder on its surface under Straight down, the piston rod is hinged at the identical height and position of same circumference close to bottom end along piston rod length direction bar Multiple fixed jaws, the fixed jaw can be radially unfolded along piston rod, and the fixed jaw is fixed after opening by bolt and spare tyre Connection.

By using above-mentioned technical proposal, multiple fixed jaws are hinged in the bottom end of piston rod, pass through the effect of fixed jaw Spare tyre and pneumatic cylinder are fixed together, allow spare tyre that can follow one lifting of piston rod, compared with chain-type, there is energy The advantages of enough quickly lifting spare tyres, the time of replacement spare tyre is reduced, do not delay normal stroke and causes the problem of traffic congestion.

The utility model is further arranged to: the U-board is fixedly connected by Shockproof screw with crossbeam, the shockproof spiral shell Silk is that interior hexagonal pattern and screw thread are set as external screw thread, the inner hollow of the Shockproof screw and is connected with rubber ring wherein.

By using above-mentioned technical proposal, U-board and crossbeam are fixed using damping screw, semitrailer can be reduced and be expert at Influence of the vibration to pneumatic cylinder during sailing.

The utility model is further arranged to: the bottom end of the piston rod is provided with screw thread, is screwed with disk on the screw thread Withstand on disk below spare tyre.

By using above-mentioned technical proposal, there is screw thread in piston rod bottom end, has been connected through a screw thread disk, and disk is screwed on Play the support to spare tyre, it is excessive to the pressure of fixed jaw to reduce spare tyre, reduces the loss of equipment, extends the service life of device.

The utility model is further arranged to: the middle position of the piston rod is formed with rotary table, the rotary table It is coaxially disposed with piston rod, the rotary table is against the upper surface of spare tyre.

By using above-mentioned technical proposal, upper rotary table is set in the middle position of piston rod, passes through pair of rotary table and disk Recast is used, and to clamp spare tyre, carries out limit clamping to spare tyre.

The utility model is further arranged to: the upper cover of piston rod between the pneumatic cylinder and rotary table has spring.

By using above-mentioned technical proposal, the upper cover of piston rod between pneumatic cylinder and rotary table has spring, passes through spring Damping, buffering reduces influence of the semitrailer in the process of moving to the device of entire replacement spare tyre.

The utility model is further arranged to: being glued with cushion on the fixed jaw lower surface.

By using above-mentioned technical proposal, cushion is sticked in fixed jaw make-up, after the fixed completion spare tyre of fixed jaw, is delayed Punching pad can be horizontal between spare tyre and fixed jaw, plays the damping to fixed jaw in the process of moving to semitrailer by cushion Buffer function.

The utility model is further arranged to: being lined with one layer of rubber pad between the disk and spare tyre, the bolt and solid Determine to be lined with one layer of rubber pad between pawl.

By using above-mentioned technical proposal, upper rubber pad is padded between disk and spare tyre and bolt and fixed jaw, is reinforced Integrally-built cushioning buffer effect.

The utility model is further arranged to: the lower surface of the disk is formed with convex block, and the convex block is hexagonal Shape, inside and the screw thread of the convex block match.

By using above-mentioned technical proposal, upper protruding block is installed below disk, can facilitate semitrailer user of service can Disk is screwed on and is against on spare tyre.

In conclusion the advantageous effects of the utility model are as follows:

1. the bottom end of piston rod is hinged with multiple fixed jaws, spare tyre is fixedly connected with pneumatic cylinder by the effect of fixed jaw Together, allow spare tyre that can follow one lifting of piston rod, compared with chain-type, the excellent of spare tyre can quickly be gone up and down by having Point reduces the time of replacement spare tyre；

2. between pneumatic cylinder and U-board, between rotary table and pneumatic cylinder, between fixed jaw and spare tyre, bolt and fixed jaw Between and disk and spare tyre between be provided with buffer damping structure, can be allowed by buffer damping structure in semitrailer bottom Spare tyre can stablize, while reducing damage to pneumatic cylinder.

Detailed description of the invention

Fig. 1 is a kind of device overall structure diagram convenient for semitrailer replacement spare tyre of the utility model.

Fig. 2 is the Shockproof screw structural schematic diagram of the utility model.

Fig. 3 is the utility model pneumatic cylinder and the overall schematic of plane connection structure thereon.

Fig. 4 is the structural schematic diagram of the utility model disk.

Fig. 5 is the structure connection diagram of the fixed jaw of the utility model.

Fig. 6 is the cross-sectional view of A-A in Fig. 4.

In figure, 1, chassis；11, crossbeam；2, U-board；21, Shockproof screw；211, rubber ring；3, pneumatic cylinder；31, piston Bar；311, rotary table；312, fixed jaw；313, screw thread；32, spring；33, cushion；34, bolt；35, disk；351, convex block； 36, rubber pad；4, spare tyre.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

It referring to Fig.1, is a kind of device that spare tyre is replaced convenient for semitrailer disclosed by the utility model, including chassis 1, chassis Length direction of 1 lower surface along chassis 1 is uniformly arranged at equal intervals there are four chassis, in the middle position of intermediate two chassis Two lateral edge chassis 1 width direction setting there are two being welded on crossbeam 11 on chassis, between two intermediate positions of crossbeam 11 Along chassis, 1 length direction is equipped with U-board 2 closed at both ends, and U-board 2 is downwardly open, and U-board 2 assigns shockproof spiral shell by both ends Silk 21 is fixed together with crossbeam 11, and as shown in connection with fig. 2, Shockproof screw 21 is interior hexagonal pattern, and outer ring is screw thread, shockproof The inner hollow of screw 21, the end in Shockproof screw 21 far from interior hexagonal are equipped with rubber ring 211, and rubber ring 211 is ladder It circular shaft shape and is stuck in Shockproof screw 21.

Shown in referring to Figure 1 and Figure 3, surface middle position of the U-board 2 under is fixedly installed with by Shockproof screw 21 The piston rod 31 of pneumatic cylinder 3, pneumatic cylinder 3 is arranged along straight down, and the middle position of piston rod 31 is provided with and piston rod 31 Integrally formed and coaxial rotary table 311 is provided with the bullet being set on piston rod 31 between 3 top of rotary table 311 and pneumatic cylinder Spring 32, piston rod 31 are uniform at equal intervals at the identical height and position of same circumference along 31 length direction of piston rod close to bottom end It is hinged there are five can be radially unfolded along piston rod 31 fixed jaw 312, fixed jaw 312 is rectangular shape, the bottom of fixed jaw 312 End is hinged on piston rod 31, after rotary table 311 is against spare tyre 4, by assigning spiral shell far from its hinged end in fixed jaw 312 Fixed jaw 312 and spare tyre 4 are fixed together by bolt 34.It is glued on surface of the fixed jaw 312 with respect to spare tyre 4 and solid Determine the identical cushion 33 of 312 surface size of pawl, cushion 33 is rubber material.

Referring to shown in Fig. 3 and Fig. 4, the piston rod 31 of 312 lower section of fixed jaw is equipped with screw thread 313, be screwed on screw thread 313 with The identical disk 35 of inner ring size diameter between the wheel of spare tyre 4, is against disk 35 on spare tyre 4 by screw thread 313, disk 35 inner ring is greater than the diameter of piston rod 31, is equipped with convex block 351 on the lower surface of disk 35, the inner ring of convex block 351 is provided with Screw thread, convex block 351 are hexgonal structure.

Shown in referring to figure 5 and figure 6, it is glued on 312 opposed bottom face of fixed jaw identical with 312 surface size of fixed jaw Cushion 33, cushion 33 are rubber material, are lined with one between disk 35 and spare tyre 4 and between bolt 34 and fixed jaw 312 Layer rubber pad 36.

The implementation principle of the present embodiment are as follows: when installation, the middle position of spare tyre 4 is moved to the position of corresponding piston rod 31 Piston rod 31 is protruded into spare tyre 4, fixed jaw 312 is opened, by right in fixed jaw 312 and spare tyre 4 by place, starting pneumatic cylinder 3 It answers position to assign bolt 34, piston rod 31 is fixedly connected with spare tyre 4, then piston rod 31 retracts in pneumatic cylinder 3, piston Bar 31 hauls spare tyre 4 and is lifted to certain altitude, and disk 35 is screwed on screw thread 313, withstands on spare tyre 4 on rotary table 311, disk 35 For being supported to spare tyre 4.When in use, by putting down piston rod 31, disk 35 is unscrewed, spare tyre 4 is disassembled.

The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical Within novel protection scope.

Claims (8)

1. a kind of device convenient for semitrailer replacement spare tyre, including chassis (1), chassis (1) lower surface is along chassis (1) width Direction is fixedly connected with multiple crossbeams (11), it is characterised in that: is fixedly connected between intermediate two crossbeams (11) bottom of along Disk (1) the length direction setting U-board (2) intermediate in crossbeam (11), the U-board (2) are downwardly open and under its direction It is fixedly connected on surface pneumatic cylinder (3), the piston rod (31) of the pneumatic cylinder (3) straight down, lean on by the piston rod (31) Nearly bottom end is hinged with multiple fixed jaws (312), institute along piston rod (31) length direction at the identical height and position of same circumference Stating fixed jaw (312) can be radially unfolded along piston rod (31), and the fixed jaw (312) passes through bolt (34) and spare tyre after opening (4) it is fixedly connected.

2. a kind of device convenient for semitrailer replacement spare tyre according to claim 1, it is characterised in that: the U-board (2) It is fixedly connected by Shockproof screw (21) with crossbeam (11), the Shockproof screw (21) is interior hexagonal pattern and screw thread is set as outer Screw thread, the inner hollow of the Shockproof screw (21) and is connected with rubber ring (211) wherein.

3. a kind of device convenient for semitrailer replacement spare tyre according to claim 1, it is characterised in that: the piston rod (31) bottom end side is provided with screw thread (313), and being screwed with disk (35) on the screw thread (313) makes disk (35) withstand on spare tyre (4) below.

4. a kind of device convenient for semitrailer replacement spare tyre according to claim 1, it is characterised in that: the piston rod (31) middle position is formed with rotary table (311), and the rotary table (311) and piston rod (31) are coaxially disposed, the circle Platform (311) is against the upper surface of spare tyre (4).

5. a kind of device convenient for semitrailer replacement spare tyre according to claim 4, it is characterised in that: the pneumatic cylinder (3) spring (32) are cased on the piston rod (31) between rotary table (311).

6. a kind of device convenient for semitrailer replacement spare tyre according to claim 1, it is characterised in that: the fixed jaw (312) cushion (33) are glued on lower surface.

7. a kind of device convenient for semitrailer replacement spare tyre according to claim 3, it is characterised in that: the disk (35) It is lined with one layer of rubber pad (36) between spare tyre (4), is lined with one layer of rubber pad between the bolt (34) and fixed jaw (312) (36).

8. a kind of device convenient for semitrailer replacement spare tyre according to claim 3, it is characterised in that: the disk (35) Lower surface be formed with convex block (351), the convex block (351) be hexagon, the inside of the convex block (351) and screw thread (313) match.