CN210419026U - Crane capable of adjusting counterweight position - Google Patents
Crane capable of adjusting counterweight position Download PDFInfo
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- CN210419026U CN210419026U CN201920944286.7U CN201920944286U CN210419026U CN 210419026 U CN210419026 U CN 210419026U CN 201920944286 U CN201920944286 U CN 201920944286U CN 210419026 U CN210419026 U CN 210419026U
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- crane
- main body
- counterweight
- hinged
- driving device
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Abstract
The utility model relates to a crane capable of adjusting the position of a counterweight, which comprises a crane main body and a counterweight, wherein the counterweight is connected with the crane main body through a parallelogram mechanism; the parallelogram mechanism comprises two parallel connecting arms with equal length, the top ends of the connecting arms are hinged on the crane main body, the bottom ends of the connecting arms are hinged on the balance weight, the parallelogram mechanism further comprises a telescopic driving device, one end of the telescopic driving device is hinged on the heavy machine main body, and the other end of the telescopic driving device is hinged on the balance weight so as to adjust the relative position of the balance weight and the crane main body when the telescopic driving device is telescopic. The counterweight and the crane main body are connected with the counterweight and the crane main body through the connecting arms hinged with the counterweight and the crane main body respectively, and the counterweight is driven to move relative to the crane main body through the stretching and retracting of the stretching and retracting driving device, so that the operation is simple, and the counterweight can be easily adjusted.
Description
Technical Field
The utility model relates to a hoist of adjustable counter weight position.
Background
The automobile crane is widely applied to modern engineering construction, is mainly used in the industries of engineering infrastructure and the like, and is an indispensable important member in engineering machinery products. In each mechanism of the crane, the counterweight plays an important role in keeping the balance of the crane, and the weight and the suspension position of the counterweight directly influence the hoisting capacity and the safety and stability performance of the crane.
In order to improve the lifting capacity of the truck crane during operation, an operator of the crane usually moves the crane to approach the heavy object, so that the crane is in a favorable position to lift the heavy object, but the method is limited by the terrain and the operation process is complicated. The other method is to increase the counterweight or move the position of the gravity center of the counterweight, but for medium and small cranes, the counterweight is mostly fixed. The increase of the balance weight and the movement of the gravity center position are limited by the structure and the working condition performance of the crane. In reality, many operators adopt the mode of increasing weights such as stones on the balance weight privately, and although the effect of improving the hoisting capacity to a certain extent can be achieved, the operation requirements are not met, and great potential safety hazards are caused.
Therefore, for small and medium-sized cranes, how to increase the load capacity of the crane without increasing the total counterweight of the crane is an important problem to be solved urgently by those skilled in the art by developing a method for changing the gravity center position of the counterweight to increase the load capacity and stability of the crane.
Chinese utility model patent that the grant bulletin number is CN201228208Y, the grant bulletin date is 2009.04.29 discloses a movable counter weight device, makes the counter weight can the front and back direction move through setting up the slide on the revolving platform, realizes the drive to the counter weight through hydraulic cylinder simultaneously. However, the structure needs to design a slide way and an adaptive guide structure, has great influence on the existing structure, and is difficult to realize.
Chinese patent application publication No. CN103539025A and application publication No. 2014.01.29 disclose a counterweight device for a crane, in which a counterweight is hinged to a revolving platform of the crane, and the counterweight is driven to rotate by a hydraulic cylinder to move back and forth. However, the structure needs to reserve a large rotating space for the balancing weight, and the required driving force is large, so that the cost is high, and the problem of difficult realization exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hoist of adjustable counter weight position for solve the problem that current hoist is difficult for realizing the counter weight regulation.
In order to achieve the above object, the utility model discloses a technical scheme of hoist of adjustable counter weight position is: the crane capable of adjusting the position of the counterweight comprises a crane main body and the counterweight, wherein the counterweight is connected with the crane main body through a parallelogram mechanism;
the parallelogram mechanism comprises two connecting arms which are parallel and have the same length, the top ends of the connecting arms are hinged on the crane main body, the bottom ends of the connecting arms are hinged on the balance weight,
the crane further comprises a telescopic driving device, one end of the telescopic driving device is hinged to the crane main body, and the other end of the telescopic driving device is hinged to the counterweight, so that the relative position of the counterweight and the crane main body can be adjusted when the telescopic driving device is telescopic.
The utility model discloses a hoist of adjustable counter weight position's beneficial effect is: the counterweight and the crane main body are connected with the counterweight and the crane main body through the connecting arms hinged with the counterweight and the crane main body respectively, and the counterweight is driven to move relative to the crane main body through the stretching and retracting of the stretching and retracting driving device, so that the operation is simple, and the counterweight can be easily adjusted.
Furthermore, the connecting arm is a telescopic connecting arm with adjustable axial length.
The crane counterweight adjusting device has the advantages that the adjusting range of the counterweight is large, the hoisting capacity of the crane is further improved, and the crane can be suitable for more working conditions.
Furthermore, the crane main body comprises a hoisting box, and the telescopic driving device is hinged on the hoisting box.
The novel steel wire rope has the advantages of being easy to machine and easy to guarantee assembling precision.
Furthermore, flexible drive arrangement articulates on the hoist case through articulated seat, and articulated seat includes U-shaped mounting, articulated round pin axle and the mounting of bending, and the mounting of bending includes two vertical fixed plates and with the horizontal connecting plate of the tip fixed connection of two vertical fixed plates, one of them vertical connecting plate be used for with hoist case fixed connection, another vertical connecting plate be used for with the one end cooperation of articulated round pin axle, the other end of articulated round pin axle cooperates with the bottom plate of U-shaped mounting, the curb plate and the hoist case fixed connection of U-shaped mounting.
The hinge seat has the beneficial effects that the hinge seat and the winding box have higher connection strength.
Further, the horizontal heights of the ends of the connecting arms are the same.
The counterweight has the advantages that an applicability structure matched with the horizontal relative position of the connecting arm does not need to be arranged on the counterweight, and the counterweight is convenient to manufacture.
Further, the counter weight includes counter weight main part and counter weight connecting plate, and the counter weight connecting plate is fixed in the counter weight main part, is equipped with the articulated structure who supplies linking arm and flexible drive arrangement articulated respectively.
The crane has the beneficial effects that the crane which cannot adjust the balance weight can be conveniently transformed into the crane with the position of the balance weight adjustable.
Drawings
FIG. 1 is a partial three-dimensional view of an embodiment of an adjustable counterweight position crane of the present invention;
FIG. 2 is a three-dimensional view of a telescoping device hinge mount of a particular embodiment of an adjustable counterweight position crane of the present invention;
FIG. 3 is a three-dimensional view of a counterweight attachment plate of a particular embodiment of an adjustable counterweight position crane of the present invention;
FIG. 4 is a three-dimensional view of a linking arm of an embodiment of the adjustable counterweight position crane of the present invention;
in the figure: 1. counter weight, 2, linking arm, 3, the articulated seat of telescoping device, 4, hydraulic cylinder, 5, suspension rod, 6, hoist case, 7, the counter weight main part, 8, counter weight connecting plate, 9, the articulated seat of counter weight, 10, telescopic link articulated otic placode, 11, connector, 12, linking arm body, 13, U-shaped mounting, 14, articulated round pin axle, 15, the mounting of bending, 16, triangular support.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses a concrete embodiment of the hoist of adjustable counter weight position, the hoist of adjustable counter weight position (call the hoist down) includes the hoist main part, and the hoist main part includes tripod 16 and hoist case 6, and the hoist still includes counter weight 1 and connects the parallelogram mechanism of counter weight 1 and hoist case 6. The lateral wall of the hoisting box 6 is fixedly provided with two suspension rods 5 extending along the horizontal direction, the suspension rods 5 are arranged in parallel and have the same height, and the end parts of the suspension rods 5 are provided with suspension rod hinge seats.
Still be equipped with the articulated seat of telescoping device on the hoist case 6, the articulated seat of telescoping device includes U-shaped mounting 13, articulated round pin axle 14 and the mounting 15 of bending, the mounting 15 of bending includes two vertical fixed plates and the horizontal connecting plate of vertical direction staggered arrangement, vertical fixed plate is upper fixed plate and bottom plate respectively, the bottom of horizontal connecting plate and upper fixed plate and the top fixed connection of bottom plate, the lateral wall fixed connection of upper fixed plate and hoist case 6, the bottom plate supplies articulated round pin axle 14 to pass and with the one end cooperation of articulated round pin axle 14. The opening of the U-shaped fixing piece 13 is horizontal and faces the side wall of the hoisting box 6, the side plate of the U-shaped fixing piece 13 is fixedly connected with the side wall of the hoisting box 6, and the other end of the hinged pin shaft 14 is matched with the bottom plate of the U-shaped fixing piece 13.
The counter weight 1 comprises a counter weight main body 7 and a counter weight connecting plate 8 fixed on the upper surface of the counter weight main body 7, and a counter weight hinge seat 9 and a telescopic rod hinge lug plate 10 are arranged on the counter weight connecting plate 8.
The parallelogram mechanism comprises two parallel connecting arms 2 with equal length, the connecting arms 2 comprise connecting arm bodies 12 and connectors 11 arranged at two ends of the connecting arm bodies 12, one ends of the connecting arms 12 are hinged on the suspension rod hinged seats through the connectors 11, the other ends of the connecting arms are hinged with the counterweight hinged seats 9 through the connectors 11, the weight of the counterweight 1 is mainly born by the connecting arms 2 when the parallelogram mechanism is used, and the counterweight connecting plate 8 and the winch box 6 form the parallelogram mechanism.
The crane further comprises a hydraulic oil cylinder 4, the hydraulic oil cylinder 4 comprises a cylinder body and a piston rod, the end portion, far away from one end of the piston rod, of the cylinder body is hinged to the hinging seat of the telescopic device through a hinging pin shaft 14, the end portion of the piston rod is hinged to a telescopic rod hinging lug plate 10, when the hydraulic oil cylinder 4 acts, the counterweight 1 is pushed to move relative to the hoisting box 6 so as to adjust the relative position of the counterweight 1 and the crane main body, and the hydraulic oil cylinder 4 forms a telescopic.
The utility model discloses a theory of operation of hoist of adjustable counter weight position: when the hydraulic oil cylinder 4 is controlled to enable a piston rod of the hydraulic oil cylinder to extend out, the piston rod pushes the counterweight 1 to move along the extending direction of the piston rod, the connecting arm 2 limits the movement route of the counterweight 1 until the position of the counterweight 1 relative to the crane main body reaches a preset position, and at the moment, the position adjustment of the counterweight 1 is completed, and the hoisting can be started. When the piston rod of the hydraulic cylinder 4 reaches the maximum extension, the counterweight 1 reaches the maximum distance relative to the crane body. When the piston rod of the hydraulic cylinder 4 reaches the minimum extension, the counterweight 1 returns to the initial position.
In this embodiment, the connecting arm 2 is a connecting arm with a fixed axial length, and in other embodiments, the connecting arm may also be an adjustable connecting arm with an adjustable axial length, for example, the connecting arm includes a connecting rod and a sleeve, the adjustable axial length of the connecting arm is realized by the connecting rod and the sleeve sleeved on the connecting rod, and the axial length of the connecting arm is maintained at the adjusted position by a radial pin which is simultaneously matched with the connecting rod and the sleeve.
In other embodiments, the hinge seat of the telescopic driving device may take other forms, for example, a U-shaped seat, one side of which is fixedly connected with the crane main body and has a hinge hole for the hinge shaft to fit, and the other side plate is provided with a hinge through hole for the hinge shaft to pass through. Of course, the telescopic drive may also be provided in other parts of the crane body, for example, a tripod or the like.
In this embodiment, the two suspension rods 5 have the same height, and in other embodiments, the suspension rods may be arranged in a staggered manner in the height direction, and at this time, the shape of the counterweight connecting plate needs to be changed correspondingly.
In this embodiment, counter weight 1 includes the counter weight connecting plate 8 with counter weight main part 7 fixed connection, and counter weight hinge seat 9 and telescopic link hinge otic placode 10 set up on counter weight connecting plate 8, in other embodiments, can adopt other forms to realize counter weight and linking arm and counter weight and hydraulic cylinder's articulated, for example, directly set up counter weight hinge seat and telescopic link hinge otic placode on the counter weight main part.
In this embodiment, the telescopic driving device is composed of the hydraulic cylinder 4, but in other embodiments, the telescopic driving device may be in other forms, for example, a cylinder, an electric pole, and the like.
Claims (6)
1. The crane with the adjustable counterweight position comprises a crane main body and a counterweight, and is characterized in that: the balance weight is connected with the crane main body through a parallelogram mechanism;
the parallelogram mechanism comprises two connecting arms which are parallel and have the same length, the top ends of the connecting arms are hinged on the crane main body, the bottom ends of the connecting arms are hinged on the balance weight,
the crane further comprises a telescopic driving device, one end of the telescopic driving device is hinged to the crane main body, and the other end of the telescopic driving device is hinged to the counterweight, so that the relative position of the counterweight and the crane main body can be adjusted when the telescopic driving device is telescopic.
2. An adjustable counterweight position crane as claimed in claim 1, wherein: the connecting arm is a telescopic connecting arm with adjustable axial length.
3. An adjustable counterweight position crane as claimed in claim 1, wherein: the crane main body comprises a hoisting box, and the telescopic driving device is hinged on the hoisting box.
4. An adjustable counterweight position crane as claimed in claim 3, wherein: the telescopic driving device is hinged to the winch box through the hinge seat, the hinge seat comprises a U-shaped fixing piece, a hinge pin shaft and a bending fixing piece, the bending fixing piece comprises two vertical fixing plates and a horizontal connecting plate fixedly connected with the end portions of the two vertical fixing plates, one vertical connecting plate is used for being fixedly connected with the winch box, the other vertical connecting plate is used for being matched with one end of the hinge pin shaft, the other end of the hinge pin shaft is matched with a bottom plate of the U-shaped fixing piece, and a side plate of the U-shaped fixing piece is fixedly connected with the winch box.
5. An adjustable counterweight position crane as claimed in any one of claims 1 to 4, wherein: the horizontal heights of the ends of the connecting arms are the same.
6. An adjustable counterweight position crane as claimed in any one of claims 1 to 4, wherein: the counter weight comprises a counter weight main body and a counter weight connecting plate, the counter weight connecting plate is fixed on the counter weight main body, and hinged structures for the connecting arm to be hinged with the telescopic driving device are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920944286.7U CN210419026U (en) | 2019-06-21 | 2019-06-21 | Crane capable of adjusting counterweight position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920944286.7U CN210419026U (en) | 2019-06-21 | 2019-06-21 | Crane capable of adjusting counterweight position |
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| CN210419026U true CN210419026U (en) | 2020-04-28 |
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| CN201920944286.7U Active CN210419026U (en) | 2019-06-21 | 2019-06-21 | Crane capable of adjusting counterweight position |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4197958A4 (en) * | 2020-10-09 | 2024-03-06 | Kobelco Constr Mach Co Ltd | Crane |
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2019
- 2019-06-21 CN CN201920944286.7U patent/CN210419026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4197958A4 (en) * | 2020-10-09 | 2024-03-06 | Kobelco Constr Mach Co Ltd | Crane |
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