Truck-mounted crane with good fixity

Abstract

The utility model discloses a lorry-mounted crane with good fixity, and relates to the field of lorry-mounted cranes, the lorry-mounted crane comprises a fixed part, a movable cavity is formed in the fixed part, a movable part is slidably connected in the movable cavity, the side wall of the fixed part is fixedly connected with a motor, and an output shaft of the motor is in transmission connection with a threaded rod; the threaded rod is in threaded connection with the movable part, and an oil cavity is reserved in the fixed part. The movable part in threaded connection with the threaded rod is adjusted through the motor to move, due to the fact that threaded connection has self-locking performance, adjustment of the movable part is more stable, the vertex position of the adjusted movable part is fixed, and in the moving process of the movable part, the movable part is not prone to falling off. The side wall of the pointed cone block connected to the fixed position in the movable part abuts against the blocking block and jacks up the blocking block, lubricating oil flows out of the gap between the blocking block and the oil outlet and flows into the oil adding groove through the through hole, and the lubricating oil in the oil adding groove enables threaded connection between the threaded rod and the threaded groove in the movable part to be smooth.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of truck crane, concretely relates to a truck crane with good fixing property. BACKGROUND

[0002] The truck crane is a kind of equipment for lifting, rotating and hoisting goods through hydraulic lifting and telescopic system, usually assembled on a truck, with the characteristics of flexibility and maneuverability, suitable for on-site rescue, road repair, indoor work and urban streets.

[0003] The existing Chinese patent authorized announcement No.CN205709586U discloses a truck crane with a basket, comprising a chassis, a telescopic arm arranged on the chassis, a basket connected to the rear of the telescopic arm, a connecting device arranged between the telescopic arm and the basket, the connecting device comprising a No.1 connecting plate, a No.2 connecting plate and a pin shaft, the No.1 connecting plate is fixedly connected to the telescopic arm, the No.2 connecting plate is fixedly connected to the basket, the No.1 connecting plate and the No.2 connecting plate are fixedly provided with sleeve pipes of the same height arranged in parallel, and the pin shaft is located in the sleeve pipes. The utility model has the advantages of simple structure, convenient use and high safety.

[0004] The existing truck crane has the following problems in use: the above-mentioned truck crane has many auxiliary parts when the telescopic arm is in the active state, which increases the maintenance cost of the overall lifting device, and it is inconvenient to replace the damaged telescopic arm after a long period of use.

[0005] Therefore, it is necessary to invent a truck crane with good fixing property to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a truck crane with good fixing property to solve the above-mentioned problems in the background art, i.e., the truck crane has many auxiliary parts when the telescopic arm is in the active state, which increases the maintenance cost of the overall lifting device, and it is inconvenient to replace the damaged telescopic arm after a long period of use.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a truck crane with good fixing property, comprising a fixing part, an active cavity is arranged in the fixing part, an active part is slidably connected in the active cavity, a motor is fixedly connected to the side wall of the fixing part, a threaded rod is drivingly connected to the output shaft of the motor, the threaded rod is threadedly connected to the active part, an oil cavity is reserved in the fixing part, an oil inlet is arranged on the top of the fixing part, and the truck crane further comprises:

[0008] The intermittent oil outlet assembly is arranged in the interior of the fixed part, the interior of the fixed part is provided with an oil outlet, the oil outlet is communicated with the oil cavity and the movable cavity, a plug is arranged in the interior of the oil outlet, the top of the plug is fixedly connected with a movable rod, the top end of the movable rod is fixedly connected with a top disc, the top disc and the fixed part are elastically connected through a spring, the interior of the movable part is reserved with an oil adding groove, and a sharp cone block is fixedly connected in the through hole reserved in the square plate in the interior of the oil adding groove through a connecting block.

[0009] Preferably, the threaded rod and the threaded groove reserved in the interior of the movable part are threadedly connected, and the threaded groove is communicated with the oil adding groove.

[0010] Preferably, the intermittent oil outlet assembly is arranged in the interior of the fixed part, the interior of the fixed part is provided with an oil outlet, the oil outlet is communicated with the oil cavity and the movable cavity, a plug is arranged in the interior of the oil outlet, the top of the plug is fixedly connected with a movable rod, the top end of the movable rod is fixedly connected with a top disc, the top disc and the fixed part are elastically connected through a spring, the interior of the movable part is reserved with an oil adding groove, and a sharp cone block is fixedly connected in the through hole reserved in the square plate in the interior of the oil adding groove through a connecting block.

[0011] Preferably, the oil outlet and the plug are circular truncated cones, the top circle diameter of the oil outlet and the plug is larger than the bottom circle diameter, the lower end of the plug protrudes from the lower opening of the oil outlet, there is a gap between the lower end of the plug and the top wall of the movable part, the side wall of the sharp cone block contacts and pushes the plug during the movement of the sharp cone block, a gap is formed between the plug and the oil outlet, and the lubricating oil in the oil cavity leaks out and directly falls into the oil adding groove through the gap between the plug and the oil outlet.

[0012] Preferably, the spring is sleeved on the rod body outside the fixed part, and the upper and lower ends of the spring are fixedly connected with the top disc and the top wall of the fixed part, respectively.

[0013] Preferably, the inner circle diameter of the through hole is larger than the bottom circle diameter of the sharp cone block, and the upper end of the sharp cone block can lift the lower end of the plug.

[0014] In the above technical scheme, the technical effects and advantages of the utility model are as follows:

[0015] The movable part is moved by the threaded connection of the starting motor and the threaded rod, the threaded connection has self-locking property, the adjustment of the movable part is more stable, the vertex position of the movable part is fixed after adjustment, the side wall of the sharp cone block fixedly connected in the movable part pushes the plug and lifts the plug during the movement of the movable part, the lubricating oil flows out from the gap between the plug and the oil outlet, flows into the oil adding groove through the through hole, and the threaded connection between the threaded rod and the threaded groove in the movable part is smoother. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to make the technical personnel of the prior art better understand the technical scheme of the present application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0017] Figure 1 It is the overall structure of the utility model stereogram;

[0018] Figure 2 It is the internal structure of the utility model fixed part (partially cut state) stereogram;

[0019] Figure 3 It is the utility model Figure 2 The structure of A in the middle is enlarged effect stereogram;

[0020] Figure 4 It is the utility model movable part and square plate connecting structure explosion diagram.

[0021] Mark the drawing:

[0022] 1, fixed part; 2, movable part; 3, movable cavity; 4, motor; 5, threaded rod; 6, oil cavity; 7, intermittent oil outlet assembly; 701, oil outlet; 702, block; 703, movable rod; 704, top disc; 705, spring; 706, oil tank; 707, square plate; 708, sharp cone block; 709, connecting block; 710, through hole. Specific implementation

[0023] In order to make the technical personnel of the prior art better understand the technical scheme of the present application, the drawings will be further described in detail below.

[0024] The utility model provides a kind of vehicle-mounted crane with good fixing as shown in Figures 1-4 The utility model discloses a kind of vehicle-mounted crane with good fixing as shown in formula (1), the movable cavity 3 is set in the inside of fixed part 1, and the inside of movable cavity 3 is slidably connected with movable part 2, the side wall of fixed part 1 is fixedly connected with motor 4, and the output shaft of motor 4 is drivingly connected with threaded rod 5, threaded rod 5 is present threaded connection with movable part 2, oil cavity 6 is reserved in the inside of fixed part 1, the top of fixed part 1 is provided with oil inlet, and further include:

[0025] The intermittent oil outlet assembly 7 is internally provided with an oil outlet 701, which is communicated with the oil cavity 6 and the movable cavity 3, and the oil outlet 701 is internally provided with a plug 702, and the top of the plug 702 is fixedly connected with a movable rod 703, the top end of the movable rod 703 is fixedly connected with a top disc 704, the top disc 704 is elastically connected with the fixed part 1 through a spring 705, the movable part 2 is internally provided with an oil adding groove 706, and the through hole 710 in the square plate 707 internally fixedly connected with the oil adding groove 706 is fixedly connected with a sharp cone block 708 through a connecting block 709.

[0026] The threaded rod 5 is in threaded connection with the threaded groove internally reserved in the movable part 2, and the threaded groove is communicated with the oil adding groove 706, and since the threaded connection has self-locking property, the adjustment of the movable part 2 is more stable.

[0027] The intermittent oil outlet assembly 7 is internally provided with an oil outlet 701, which is communicated with the oil cavity 6 and the movable cavity 3, and the oil outlet 701 is internally provided with a plug 702, and the top of the plug 702 is fixedly connected with a movable rod 703, the top end of the movable rod 703 is fixedly connected with a top disc 704, the top disc 704 is elastically connected with the fixed part 1 through a spring 705, the movable part 2 is internally provided with an oil adding groove 706, and the through hole 710 in the square plate 707 internally fixedly connected with the oil adding groove 706 is fixedly connected with a sharp cone block 708 through a connecting block 709.

[0028] The oil outlet 701 and the plug 702 are both circular truncated cone, the top circle diameter of the oil outlet 701 and the plug 702 is larger than the bottom circle diameter, the lower end of the plug 702 protrudes from the lower opening of the oil outlet 701, there is a gap between the lower end of the plug 702 and the top wall of the movable part 2, the side wall of the sharp cone block 708 in the moving process is in contact with the side wall of the plug 702 and abuts against the plug 702, a gap is formed between the plug 702 and the oil outlet 701, and the lubricating oil in the oil cavity 6 leaks out and directly falls into the oil adding groove 706 through the gap between the plug 702 and the oil outlet 701.

[0029] The spring 705 is movably sleeved on the outer circle of the rod body of the movable rod 703 outside the fixed part 1, and the upper and lower ends of the spring 705 are fixedly connected with the top disc 704 and the top wall of the fixed part 1 respectively, and the pressure of the spring 705 promotes the close matching of the plug 702 and the oil outlet 701.

[0030] The inner circle diameter of the through hole 710 is larger than the bottom circle diameter of the sharp cone block 708, the upper end of the sharp cone block 708 can lift the lower end of the plug 702, the sharp cone block 708 lifts the plug 702 in the moving process, a gap is formed between the plug 702 and the oil outlet 701, and the lubricating oil leaks out and directly falls into the oil adding groove 706.

[0031] Working principle: when using a good fixed truck crane, first start the motor 4 mobilization motor 4 output shaft transmission connected with the rotation of the threaded rod 5, threaded rod 5 with the movable member 2 threaded connection in the original movable cavity 3 under the limiting action of the linear movement, because the threaded connection itself has self locking, so that the adjustment of the movable member 2 is more stable, at the same time makes the movable member 2 position limit more firm, in the process of moving the movable member 2, the movable member 2 is provided with the synchronous movement of the sharp cone block 708 in the process of contacting with the side wall of a certain block 702, at the same time, the movable member 2 continues to move in the process, the side wall of the sharp cone block 708 of fixed height position contacts with the side wall of the movable block 702 and pushes the block 702 to move, so that the gap appears between the block 702 and the oil outlet 701, the lubricating oil in the oil cavity 6 leaks out through the gap between the block 702 and the oil outlet 701 and directly falls into the oil groove 706, in the process of subsequent threaded rod 5 continuous rotation and movable member 2 movement, the lubricating oil in the oil groove 706 makes the threaded connection between threaded rod 5 and movable member 2 more smooth (the gap between the three intermittent oil outlet assemblies 7 is larger, when the movable member 2 finally stops, the sharp cone block 708 in the movable member 2 will not contact with the block 702).

[0032] Because the threaded groove reserved in the movable member 2 is through, the movable member 2 and the fixed member 1 are detachably installed, so that the replacement of the damaged movable member 2 after a long time of use is more convenient (the movement range of the movable member 2 is limited in the normal movement adjustment state, which ensures that the movable member 2 will not be separated from the fixed member 1 in the normal adjustment state).

[0033] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the present application.

Claims

1. A truck-mounted crane with good fixation, comprising a fixation member (1), characterized in that, The inside of the fixed part (1) is provided with a movable cavity (3), and the movable cavity (3) is slidably connected with a movable part (2), the sidewall of the fixed part (1) is fixedly connected with a motor (4), and the output shaft of the motor (4) is drivingly connected with a threaded rod (5), the threaded rod (5) is in threaded connection with the movable part (2), the inside of the fixed part (1) is reserved with an oil cavity (6), the top of the fixed part (1) is provided with an oil filling port, and the intermittent oil outlet assembly (7) is further provided. The inside of the fixed part (1) is provided with an oil outlet (701), the oil outlet (701) is in communication with the oil cavity (6) and the movable cavity (3), a plug (702) is inserted in the oil outlet (701), the top of the plug (702) is fixedly connected with a movable rod (703), the top end of the movable rod (703) is fixedly connected with a top disc (704), the top disc (704) and the fixed part (1) are elastically connected through a spring (705), the inside of the movable part (2) is reserved with an oil filling groove (706), and a through hole (710) reserved in a square plate (707) fixedly connected in the oil filling groove (706) is fixedly connected with a sharp cone block (708) through a connecting block (709).

2. The good-fix on-board crane of claim 1, wherein, The threaded rod (5) and the threaded groove reserved in the movable part (2) are in threaded connection, and the threaded groove is in communication with the oil filling groove (706).

3. The good fixed with a truck crane, its characterized in that according to claim 1, The three groups of intermittent oil outlet assemblies (7) are equally spaced and linearly distributed in the inside of the fixed part (1).

4. The good-fix on-board crane of claim 1, wherein, The oil outlet (701) and the plug (702) are both circular truncated cones, the top circle diameter of the oil outlet (701) and the plug (702) is larger than the bottom circle diameter, the lower end of the plug (702) protrudes from the lower opening of the oil outlet (701), and there is a gap between the lower end of the plug (702) and the top wall of the movable part (2).

5. The good fixed with a truck crane according to claim 1, characterized in that, The spring (705) is movably sleeved on the rod body outer circle of the movable rod (703) outside the fixed part (1), and the upper and lower ends of the spring (705) are fixedly connected with the top disc (704) and the top wall of the fixed part (1) respectively.

6. The good fixed with a truck crane according to claim 1, characterized in that, The inner circle diameter of the through hole (710) is larger than the bottom circle diameter of the sharp cone block (708), and the upper end of the sharp cone block (708) can lift the lower end of the plug (702).

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