CN216709135U - Trailing arm of truck-mounted crane - Google Patents

Abstract

The utility model relates to vehicle-mounted hoisting equipment, in particular to a vehicle-mounted hoisting trailing arm which comprises two telescopic arms, wherein the tops of the two telescopic arms are hinged with each other through a trailing head, the bottoms of the two telescopic arms can be hinged and fixed respectively, each telescopic arm at least comprises an upper stay bar and a lower stay bar which are nested and matched, the end part of the upper stay bar is detachably connected with a pipe clamp, a bolt is inserted into the pipe clamp, the lower stay bar is provided with a limit groove, and the bolt can extend into the limit groove to limit the lower stay bar to move into the upper stay bar. The trailing arm of the truck-mounted crane has the advantages of simple structure, convenience in assembly and disassembly and better universality, the bolt does not need to penetrate through the telescopic arm, external dust and sand are prevented from entering the telescopic arm, the service life of the trailing arm of the truck-mounted crane is prolonged, meanwhile, the telescopic arm with the large upper part and the small lower part is formed by adopting the structure that the lower support rod is moved into the upper support rod, the dust and sand are further prevented from entering the telescopic arm in the folding process, and the smooth unfolding and folding of the trailing arm of the truck-mounted crane are ensured.

Description

Trailing arm of truck-mounted crane

Technical Field

The utility model relates to vehicle-mounted hoisting equipment, in particular to a trailing arm of a vehicle-mounted crane.

Background

The current automobile-used lifting device generally is special vehicle lifting device, and is bulky, and install and remove complicacy, can not exchange the installation between the vehicle of different grade type, the commonality is relatively poor, and simultaneously, lifting device's flexible arm comprises for the multistage davit suit, the davit is fixed at the bolt that the flexible state adopted the davit of running through, need set up the through-hole that runs through on the davit, lead to flexible arm to get into dust sand and soil easily at flexible in-process, influence the smooth expansion between the davit and draw in, influence lifting device's life.

Therefore, a technical scheme is needed to solve the technical problems of complex assembly and disassembly, poor universality and short service life of the conventional vehicle-mounted hoisting equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: aiming at the technical problems of complex assembly and disassembly, poor universality and short service life of the existing vehicle-mounted hoisting equipment in the background technology, the trailing arm of the vehicle-mounted crane is provided.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a trailing arm is hung to vehicle-mounted, includes two flexible arms, two the top of flexible arm is passed through the tow head and is articulated each other, and the bottom can be articulated respectively fixedly, each flexible arm includes nested complex upper portion vaulting pole and lower part vaulting pole at least, the connecting tube card can be dismantled to upper portion vaulting pole tip, the tube card inserts and is provided with the bolt, the lower part vaulting pole sets up the spacing groove, the bolt can stretch into the spacing groove, the restriction the lower part vaulting pole is relative the upper portion vaulting pole removes.

The trailing arm of the truck-mounted crane is formed by hinging two telescopic arms, has simple structure, can be easily hinged and fixed at the bottom end through structural parts such as bolts, bolts and the like, is convenient to assemble and disassemble, has good universality, simultaneously forms the upper support rod and the lower support rod of the telescopic arms, realizes fixation through the matching of pipe clamps, the bolts and the limiting grooves when in a spreading state, has simple structure, avoids external dust and sand from entering the telescopic arms because the bolts do not need to penetrate through the telescopic arms, is favorable for prolonging the service life of the trailing arm of the crane, simultaneously adopts the structure that the lower support rod moves into the upper support rod to form the telescopic arms with large top and small bottom, further ensures that the dust and sand are not easy to enter in the folding process of the telescopic arms, ensures the smooth spreading and folding of the trailing arm, can be applied to vehicles and can move along with the vehicles, can be used for lifting heavy objects and also can be used for dragging heavy objects, the adaptability is better.

As a preferable aspect of the present invention, the lower stay rod is detachably connected to a rod head, and the limit groove is provided in the rod head. The stay bar with the combined assembly structure is convenient to maintain, and the preparation cost of the stay bar is reduced.

As a preferable scheme of the present invention, the pipe clamp includes a seat body, the seat body is provided with a through hole adapted to the lower support rod, an elastic limiting member is disposed in the seat body, a portion of the elastic limiting member extends into the through hole, the bolt is connected to a driving member, the driving member is used for driving the bolt to move, and the driving member is disposed in the seat body. The stability of the relative movement process of the upper support rod and the lower support rod is improved through the elastic limiting part, and meanwhile, the connection state of the bolt and the limiting groove is maintained through the driving part, so that the stability of the upper support rod and the lower support rod in the unfolding state is maintained.

As a preferable scheme of the utility model, the number of the pins is at least two, and one end of the pin extending out of the seat body is connected with a pull ring. The bolt is conveniently moved manually through the pull ring.

As a preferable scheme of the present invention, a sealing mechanism is embedded in one side of the seat body away from the upper support rod. The lower supporting rod is not easy to bring dust, sand and soil into the telescopic arm in the process of moving into the upper supporting rod, so that the telescopic arm is further ensured to be smoothly unfolded and folded, and the service life of the telescopic arm is prolonged.

As a preferred scheme of the utility model, the pipe clamp comprises at least one middle support rod, wherein one end of the middle support rod is provided with the limiting groove, the other end of the middle support rod is provided with the pipe clamp, the side wall of the pipe clamp is provided with a limiting plate, the limiting plate is provided with a limiting hole, the limiting hole is provided with a pin shaft, and the pin shaft is used for connecting adjacent pipe clamps which move close together. Through limiting plate and round pin axle, the upper portion vaulting pole, middle part vaulting pole and the lower part vaulting pole of the flexible arm of drawing in the state are connected, make and hang the trailing arm and at the state stable in structure of accomodating, make things convenient for the nimble transport use of hanging the trailing arm.

The telescopic arm is characterized by further comprising a rotating support, the rotating support can be detachably connected with the positioning member, and the bottom of the telescopic arm is hinged with the rotating support.

In a preferred embodiment of the present invention, the rotating bracket is connected to a chain, and the telescopic arm can be restricted by the chain after being disconnected from the rotating bracket. The hanging trailing arm is convenient to store in a folded state.

As a preferable scheme of the utility model, a lifting ring is arranged on the mop head, a pull rope is arranged on the lifting ring in a penetrating manner, the head end of the pull rope is connected with the lifting ring, the tail end of the pull rope is connected with a first winch, and the first winch is arranged on the positioning component.

As a preferred scheme of the present invention, a pulley mechanism can be suspended from the lifting ring, a lifting rope is threaded through the pulley mechanism, a lifting hook is disposed at a head end of the lifting rope, and a second winch is connected to a tail end of the lifting rope and disposed on the positioning member or the telescopic arm.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. the two telescopic arms are hinged, the structure is simple, the bottom end can be easily hinged and fixed through structural members such as bolts and bolts, the assembly and disassembly are convenient, and the universality is good;

2. the upper support rod and the lower support rod which form the telescopic arm are fixed by matching the pipe clamp, the bolt and the limiting groove in the unfolding state, and the structure is simple;

3. the bolt does not need to penetrate through the telescopic arm, so that external dust, sand and soil are prevented from entering the telescopic arm, the service life of the telescopic arm is prolonged, and the smooth unfolding and folding of the lifting trailing arm are ensured;

4. the structure that the lower support rod moves into the upper support rod is adopted to form a telescopic arm with a large upper part and a small lower part, so that dust and sandy soil are not easy to enter in the folding process of the telescopic arm, and the hanging trailing arm is ensured to be smoothly unfolded and folded.

Drawings

FIG. 1 is a schematic view showing a trailing arm of a truck-mounted crane in a folded state;

FIG. 2 is a schematic view of a trailing arm of a truck-mounted crane in a folded state;

FIG. 3 is a front view of the upper brace in the embodiment;

FIG. 4 is a side view of the upper brace of the embodiment;

FIG. 5 is a schematic structural view of the lower stay of the embodiment;

FIG. 6 is a front view of the middle stay of the embodiment;

FIG. 7 is a side view of the middle brace of an embodiment;

FIG. 8 is a schematic structural view taken along section A-A in FIG. 7;

FIG. 9 is a schematic view of the structure of FIG. 7 in the direction B;

FIG. 10 is a schematic structural view of section C-C of FIG. 9;

FIG. 11 is a schematic structural view of the plug in the embodiment;

FIG. 12 is a front view of the rotating bracket in the embodiment;

FIG. 13 is a side view of the rotating bracket in the embodiment;

FIG. 14 is a schematic view showing a first use state of a trailing arm part of a truck-mounted crane;

FIG. 15 is a schematic view of a trailing arm portion of a truck-mounted crane in a second use state;

fig. 16 is a schematic diagram of a use state of a trailing arm part of the truck-mounted crane.

Icon:

1-telescopic boom, 11-upper stay, 12-lower stay, 13-middle stay, 14-communication hole, 2-pipe clamp, 21-seat, 22-bolt, 221-column, 222-baffle, 23-through hole, 24-elastic limit piece, 25-driving piece, 26-pull ring, 27-sealing mechanism, 3-rod head, 31-limit groove, 4-limit plate, 41-limit hole, 42-pin shaft, 5-rotating bracket, 51-chain, 6-drag head, 61-hanging ring, 7-pull rope, 8-first winch, 9-pulley mechanism, 91-hanging rope, 92-hanging hook, 10-second winch and 20-vehicle.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Example 1

As shown in fig. 1 to 16, a trailing arm for a truck-mounted crane of this embodiment is configured to be disposed on a positioning member, where the positioning member may be a vehicle, a building, a hoisting seat, or the like, which can be used as a base member, and the trailing arm can be used to lift, drag, and lift goods by extending, shortening, and lifting, and the present embodiment preferably uses a vehicle as the positioning member, so that the trailing arm moves along with the truck, the trailing arm specifically includes two telescopic arms 1, tops of the two telescopic arms 1 are hinged to each other through a drag head 6, bottoms of the two telescopic arms can be respectively hinged and fixed, each telescopic arm 1 includes an upper stay 11 and a lower stay 12 that are in a nested fit, a lower end of the upper stay 11 is connected to a pipe clamp 2 by a thread, a plug 22 is inserted into the pipe clamp 2, a limit groove 31 is circumferentially disposed on an outer side wall of an upper end of the lower stay 12, and when the upper stay 11 and the lower stay 12 are in an unfolded state, the plug 22 can extend into the limit groove 31, the lower support rod 12 is limited to move into the upper support rod 11, and after the bolt 22 moves out of the limiting groove 31, the lower support rod 12 can move into the upper support rod 11, so that the telescopic arm 1 is folded.

Preferably, in this embodiment, as shown in fig. 3 to 11, the upper support rod 11 is a hollow rod, the pipe clamp 2 includes a seat body 21, the seat body 21 is provided with a through hole 23 adapted to the lower support rod 12, after the upper support rod 11 is fixed to the seat body 21 by threaded connection, the lower support rod 12 can pass through the through hole 23 and enter into the upper support rod 11, the plug 22 is radially disposed along the through hole 23, one end of the plug 22 can extend into the through hole 23, the other end of the plug 22 extends out of the seat body 21, one end of the plug 22 extending out of the seat body 21 is connected to the pull ring 26, so as to facilitate the movement of the plug 22 by pulling the pull ring 26.

Preferably, in this embodiment, as shown in fig. 11, the latch 22 includes a cylinder 221 and a baffle 222 disposed at an end of the cylinder 221, as shown in fig. 8, a spring is disposed on a moving path of the baffle 222 as the driving member 25, the spring is limited in the seat 21 by a set screw, when in use, when the latch 22 is pulled by the pull ring 26 to move out of the through hole 23, the spring is compressed, after the pull ring 26 is released, the latch 22 can be restored to extend into the through hole 23 under the action of the spring, which is beneficial to maintaining the stability of the deployed state of the upper support rod 11 and the lower support rod 12, and the spring and the set screw are used as the driving member 25, which has a simple structure, easy installation, low cost, and can be equivalently replaced according to actual situations.

Preferably, in this embodiment, as shown in fig. 8, an elastic limiting part 24 partially extending into the through hole 23 is further disposed in the seat body 21, the elastic limiting part 24 includes a spring and a ball plunger, the spring can apply a certain pushing force to the ball plunger, when the stay is pulled out, the ball plunger is firstly clamped into the limiting groove 31 when being pulled in place, a part of the ball plunger is maintained to extend into the through hole 23, so as to achieve a pre-positioning effect, then the driving part 25 rebounds to drive the bolt 22 to be clamped into the limiting groove 31, so as to lock the stay, when the lower stay 12 and the upper stay 11 move relatively, the lower stay 12 is prevented from shaking in the upper stay 11, which is beneficial to improving the stability of the relative movement process of the upper stay 11 and the lower stay 12.

Preferably, in this embodiment, there are two bolts 22, and one end of each of the two bolts 22 extending out of the seat body 21 is connected to the same pull ring 26.

Preferably, in this embodiment, as shown in fig. 10, a sealing mechanism 27 is embedded in a side of the seat body 21 away from the upper stay 11, that is, the sealing mechanism 27 is disposed at an opening of the through hole 23 near a side of the lower stay 12, and the sealing mechanism 27 preferably includes a felt oil seal and an oil seal cover, and is fixed on the seat body 21 by a screw, so as to prevent dust and sand when the upper stay 11 and the lower stay 12 move relatively, improve the sealing performance between contact surfaces of the upper stay 11 and the lower stay 12, ensure smooth expansion and contraction of the telescopic arm 1, and prolong the service life of the telescopic arm 1.

The trailing arm of the truck-mounted crane of the embodiment is formed by hinging two telescopic arms 1, has simple structure, can be easily hinged and fixed at the bottom end through structural members such as bolts, pin shafts and the like, is convenient to assemble and disassemble, can be easily fixed on positioning members such as vehicles, building members and the like, has good universality, and simultaneously forms an upper support rod 11 and a lower support rod 12 of the telescopic arms 1, when in the unfolding state, the pipe clamp 2, the bolt 22 and the limiting groove 31 are matched to realize fixation, the structure is simple, and the bolt 22 does not need to penetrate through the telescopic arm 1, thereby preventing external dust, sand and soil from entering the telescopic arm 1, being beneficial to prolonging the service life of the lifting trailing arm, meanwhile, the structure that the lower support rod 12 moves into the upper support rod 11 is adopted to form the telescopic arm 1 with a large upper part and a small lower part, so that dust, sand and soil are not easy to enter in the folding process of the telescopic arm 1, and the smooth unfolding and folding of the lifting trailing arm are ensured.

Example 2

As shown in fig. 1 to 16, a trailing arm of a truck-mounted crane of the present embodiment has the same structure as that of embodiment 1, except that: still include an at least middle part vaulting pole 13, middle part vaulting pole 13 one end sets up spacing groove 31, and other end threaded connection pipe strap 2, 2 lateral walls of pipe strap are provided with limiting plate 4, are provided with spacing hole 41 on the limiting plate 4, and spacing hole 41 sets and sets round pin axle 42, and round pin axle 42 is used for connecting the adjacent vaulting pole that the removal was drawn close to.

The trailing arm of a truck-mounted crane of this embodiment, set up middle part vaulting pole 13 between upper portion vaulting pole 11 and lower part vaulting pole 12, increase the whole length that expandes of flexible arm 1, simultaneously, set up limiting plate 4 of taking spacing hole 41 at pipe strap 2 lateral wall, limiting plate 4 sets up to length inequality on the pipe strap 2 that vertically is adjacent along flexible arm 1, and the lower part of the lower part vaulting pole 12 that preferred is located flexible arm 1 bottom corresponds and sets up intercommunicating pore 14, when making upper portion vaulting pole 11, middle part horizontal pole 13 and lower part vaulting pole 12 all draw in, spacing hole 41 coincidence on two adjacent pipe straps 2 and the intercommunicating pore 14 coincidence intercommunication that corresponds the lower part of lower part vaulting pole 12 and set up, can penetrate spacing hole 41 and intercommunicating pore 14 through a round pin axle 42 and carry out whole spacing, make the trailing arm stable in state structure accomodate, make things convenient for whole nimble transport.

Example 3

As shown in fig. 1 to 16, a trailing arm of a truck crane of the present embodiment has the same structure as that of embodiment 1, except that: middle part vaulting pole 13 and lower part vaulting pole 12 need set up one end threaded connection pole head 3 of spacing groove 31, and pole head 3 is the annular structure component, and spacing groove 31 sets up on the 3 outer walls of pole head, and pole head 3 can carry out threaded connection with the body of rod of middle part vaulting pole 13 and lower part vaulting pole 12, makes the flexible arm 1 that forms the combination and assembles the structure, makes things convenient for the maintenance of flexible arm 1, reduces the preparation cost of flexible arm 1.

Example 4

As shown in fig. 1 to 16, a trailing arm of a truck-mounted crane of the present embodiment has the same structure as that of embodiment 1, except that: the bottom of two flexible arms 1 articulates respectively and connects runing rest 5, runing rest 5 can be dismantled with the locating component and be connected, is connected with the chain 51 on the runing rest 5, and flexible arm 1 can restrict on runing rest 5 through the chain 51 after breaking away from the connection with runing rest 5.

According to the trailing arm of the truck-mounted crane of the embodiment, as shown in fig. 12-13, the rotating support 5 comprises a mounting plate, a connecting rod and a bracket, the connecting rod and the bracket are respectively and vertically arranged at two sides of the mounting plate, a through hole is formed in the connecting rod and used for being connected and fixed with a positioning member through a connecting piece, a groove is formed in the bracket and used for accommodating the telescopic arm 1, a chain 51 is connected to the mounting plate, so that the trailing arm in a furled state can be flatly placed on the two rotating supports 5, and the trailing arm is convenient to store in the furled state.

Example 5

As shown in fig. 1 to 16, for example, when the trailing arm of the truck-mounted crane of this embodiment is applied to a vehicle 20, a lifting ring 61 is disposed on a towing head 6 of the trailing arm, a pulling rope 7 is threaded through the lifting ring 61, a head end of the pulling rope 7 is connected to the lifting ring 61, a tail end of the pulling rope 7 is connected to a first winch 8, the first winch 8 is disposed on the vehicle 20, a pulley mechanism 9 can be suspended on the lifting ring 61, a lifting rope 91 is threaded through the pulley mechanism 9, a head end of the lifting rope 91 is provided with a lifting hook 92, and a tail end of the lifting rope is connected to a second winch 10, in this embodiment, the second winch 10 is preferably disposed on a telescopic arm 1.

In the truck-mounted crane trailing arm of the embodiment, as shown in fig. 14, two eyebolts are arranged on the trailing head 6, one eyebolt 61 is connected with the pull rope 7, the first winch 8 positioned on the vehicle 20 is connected through the pull rope 7, the first winch 8 is positioned on the cargo box of the vehicle 20 or at the bottom of the vehicle 20, the height of the crane trailing arm in the unfolded state can be adjusted through the pull rope 7, and the stability of the crane trailing arm in the hoisting operation process is maintained.

Preferably, as shown in fig. 14, the pulley mechanism 9 is suspended from one of the hoisting rings 61, the hoisting rope 91 is inserted into the pulley mechanism 9, the hook 92 is provided at the head end of the hoisting rope 91, the second hoist 10 is connected to the tail end, the second hoist 10 is provided on the telescopic boom 1, and the hook 92 can suspend an object, so that the hoisting and towing boom can be applied to hoisting an object in an unfolded state, and is suitable for lifting goods, underground construction rescue, cliff construction rescue and other scenes.

Preferably, according to actual conditions, a conventional automobile winch is used as the second winch 10, and scene requirements such as cargo hoisting and underground construction rescue are met through the automobile winch.

As shown in fig. 15, the boom can be used for towing goods, vehicle rescue, and other scenes when the boom is horizontally installed, and as shown in fig. 16, the boom is completely folded and disconnected from the rotating bracket 5, and is bound to the rotating bracket 5 at the front end of the vehicle by the chain 51, so that the boom is installed at the front bumper.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The trailing arm of the truck-mounted crane is characterized by comprising two telescopic arms (1), wherein the tops of the two telescopic arms (1) are hinged through a trailing head (6), and the bottoms of the two telescopic arms can be respectively hinged and fixed; each flexible arm (1) is including nested complex upper portion vaulting pole (11) and lower part vaulting pole (12), connecting pipe strap (2) can be dismantled to upper portion vaulting pole (11) tip, pipe strap (2) insert and are provided with bolt (22), lower part vaulting pole (12) set up spacing groove (31), bolt (22) can stretch into spacing groove (31), the restriction lower part vaulting pole (12) are relative upper portion vaulting pole (11) are removed.

2. A trailing arm according to claim 1, wherein the lower stay (12) is detachably connected at its end to the head (3), and the retaining groove (31) is provided in the head (3).

3. A trailing arm according to claim 1, wherein the pipe clamp (2) comprises a seat body (21), the seat body (21) is provided with a through hole (23) adapted to the lower stay (12), an elastic stopper (24) partially extending into the through hole (23) is arranged in the seat body (21), the plug (22) is connected with a driving member (25), the driving member (25) is used for driving the plug (22) to move, and the driving member (25) is arranged in the seat body (21).

4. A trailing arm according to claim 3, wherein the number of the pins (22) is at least two, and the end of the pin (22) extending out of the seat (21) is connected to a pull ring (26).

5. A trailing arm according to claim 4, wherein a sealing means (27) is embedded in the seat (21) on the side remote from the upper strut (11).

6. A trailing arm according to any one of claims 1-5, characterized in that, it further comprises at least one middle stay (13), one end of the middle stay (13) is provided with the limiting groove (31), the other end is provided with the pipe clamp (2), the side wall of the pipe clamp (2) is provided with a limiting plate (4), the limiting plate (4) is provided with a limiting hole (41), the limiting hole (41) is provided with a pin (42), and the pin (42) is used for connecting adjacent pipe clamps (2) which move close together.

7. A trailing arm according to claim 6, further comprising a swivel bracket (5), wherein the swivel bracket (5) is detachably connected to the positioning member, and the bottom of the telescopic arm (1) is hinged to the swivel bracket (5).

8. A trailing arm according to claim 7, wherein a chain (51) is connected to the rotating bracket (5), and the telescopic arm (1) can be restrained on the rotating bracket (5) by the chain (51) after being disconnected from the rotating bracket (5).

9. A trailing arm of a truck crane according to claim 1, characterized in that the trailing head (6) is provided with a hanging ring (61), the hanging ring (61) is provided with a pulling rope (7) in a penetrating way, the head end of the pulling rope (7) is connected with the hanging ring (61), the tail end is connected with a first winch (8), and the first winch (8) is arranged on the positioning member.

10. A trailing arm according to claim 9, wherein the hoisting ring (61) can suspend the pulley mechanism (9), the pulley mechanism (9) is provided with the hoisting rope (91) in a penetrating manner, the head end of the hoisting rope (91) is provided with the lifting hook (92), the tail end of the hoisting rope is connected with the second hoisting machine (10), and the second hoisting machine (10) is arranged on the positioning member or the telescopic arm (1).

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