CN112110350A - Crane with adjustable counterweight position - Google Patents
Crane with adjustable counterweight position Download PDFInfo
- Publication number
- CN112110350A CN112110350A CN201910543493.6A CN201910543493A CN112110350A CN 112110350 A CN112110350 A CN 112110350A CN 201910543493 A CN201910543493 A CN 201910543493A CN 112110350 A CN112110350 A CN 112110350A
- Authority
- CN
- China
- Prior art keywords
- counterweight
- crane
- guide rail
- rolling
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
Abstract
The invention relates to a crane with an adjustable counterweight position. The crane with the adjustable counterweight position comprises a crane main body and a counterweight, wherein the crane main body is provided with a guide rail, and the counterweight is provided with a suspension loop; the counterweight is supported on the guide rail through the guide of the suspension loop; a ball group used for supporting the hanging lug in the vertical direction is arranged between the guide rail and the hanging lug, one of the guide rail and the hanging lug is provided with a ball retaining hole for embedding a corresponding ball part in the ball group, and the other one of the guide rail and the hanging lug is provided with a rolling matching surface used for being matched with the balls in a rolling mode. The counterweight is supported on the guide rail through the guide movement of the hangers, the holes are kept for positioning the balls, the stable operation of the balls is guaranteed, the guide rail supports the guide of the hangers through the ball group, the abrasion of the balls is small, the guide is reliable, the counterweight can be smoothly operated, and the operation safety of the crane is guaranteed.
Description
Technical Field
The invention relates to a crane with an adjustable counterweight 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 automobile crane during operation, a method of increasing the counterweight or moving the position of the center of gravity of the counterweight is generally adopted, and for large and medium-sized cranes, the movable counterweight is generally configured to adjust the overall weight of the counterweight, and the movable counterweight is stored in a carriage when not in use. However, most of medium and small-sized cranes are fixed counterweights, so how to adjust the gravity center position of the counterweights for the medium and small-sized cranes to balance the stability of the cranes and increase the load capacity of the cranes becomes an important problem to be solved urgently by those skilled in the art.
The utility model discloses an authorization notice number is CN204173809U, the china utility model patent of authorization notice date for 2015 year 02 month 25 discloses a mobile counterweight device for mobile crane, including establishing the flexible hydro-cylinder of level at the revolving stage rear end of crane main part and establishing the horizontal guide track at revolving stage rear portion downside, sliding connection has the balancing weight in the horizontal guide track, all be equipped with one row of nylon supporting shoe along length direction in every horizontal guide track, the upper surface of nylon supporting shoe and the lower surface contact of baffle, the baffle is connected with the balancing weight through the hangers of L shape and is realized balancing weight and the orbital sliding fit of horizontal guide, the flexible adjustment balancing weight's of horizontal flexible hydro-cylinder through the piston rod position, so that mobile crane adapts to the operating mode of the goods of hoist and mount different weight sizes.
However, the movable counterweight device for the automobile crane has the problems that the counterweight is heavy, nylon is easy to wear after long service life, the counterweight is easy to move in the vertical direction, impact on the counterweight supporting slideway is caused, meanwhile, the abrasion of the counterweight supporting slideway is accelerated, and the operation safety is affected.
Disclosure of Invention
The invention aims to provide a crane with an adjustable counterweight position, which is used for solving the problem that a counterweight supporting slideway of the crane with the adjustable counterweight position in the prior art is easy to wear.
In order to achieve the purpose, the technical scheme of the crane with the adjustable counterweight position is as follows: the crane with the adjustable counterweight position comprises a crane main body and a counterweight, wherein the crane main body is provided with a guide rail, and the counterweight is provided with a suspension loop; the counterweight is supported on the guide rail through the guide of the suspension loop;
a ball group used for supporting the hanging lug in the vertical direction is arranged between the guide rail and the hanging lug, one of the guide rail and the hanging lug is provided with a ball retaining hole for embedding a corresponding ball part in the ball group, and the other one of the guide rail and the hanging lug is provided with a rolling matching surface used for being matched with the balls in a rolling mode.
The crane with the adjustable counterweight position has the beneficial effects that: the counterweight is supported on the guide rail through the guide movement of the hangers, the holes are kept for positioning the balls, the stable operation of the balls is guaranteed, the guide rail supports the guide of the hangers through the ball group, the abrasion of the balls is small, the guide is reliable, the counterweight can be smoothly operated, and the operation safety of the crane is guaranteed.
Furthermore, the balls are provided with at least two rows, and the balls in each row are arranged in the horizontal direction, and the arrangement direction is perpendicular to the guide direction of the balance weight.
The suspension loop has the advantages that more reliable support can be formed for the suspension loop, and abrasion of the ball and the suspension loop caused by stress concentration is reduced.
Furthermore, one of the guide rail and the hanging lug is provided with a rolling groove, and the rolling matching surface is formed by the groove bottom of the rolling groove.
The lifting lug has the beneficial effects that the flatness of the rolling matching surface is ensured, the rolling balls are reliably matched with the rolling matching surface, the gap between the lifting lug and the supporting plate can be reduced, and foreign matters are prevented from entering the guide rail and the lifting lug to influence the adjustment of the balance weight.
Furthermore, a limiting structure is arranged between the crane main body and the balance weight or the hanging lug, and the limiting structure is used for keeping the balance weight after the position adjustment to be in a relative position with the crane main body.
The crane has the advantages that the counterweight after the position adjustment is kept at the relative position with the crane main body, the relative position of the counterweight and the crane main body is prevented from shifting when the crane is hoisted, and the reliable work of the crane is facilitated.
Furthermore, the limiting structure comprises threaded holes arranged on the crane main body along the guide moving direction of the balance weight and positioning holes arranged on the hanging lugs, the threaded holes are internally connected with bolts, and the bolts penetrate through the positioning holes to be matched with the hole walls of the positioning holes in a blocking mode when in use.
The limiting device has the advantages of simple structure, convenience in processing and convenience and reliability in limiting.
Furthermore, the two positioning holes are arranged along the guide moving direction of the balance weight, and the distance between the two positioning holes is an integral multiple of the distance between the two adjacent threaded holes.
The positioning structure has the beneficial effects that the two positioning holes are matched with the threaded holes at the same time, so that the positioning accuracy is ensured.
Furthermore, a support plate is fixed on the crane main body, and the guide track is formed by the support plate.
The guide rail has the beneficial effect of facilitating the processing and maintenance of the guide rail.
Furthermore, the two ends of the rolling groove in the length direction are blind ends provided with plugging structures.
The counterweight block has the advantages that the groove side walls are arranged at the two ends of the rolling groove along the guide moving direction of the counterweight, the moving distance of the ball group is limited by the groove side walls of the rolling groove, and the situation that the use of the crane is influenced due to the fact that part of hangers are removed from being matched with the crane main body due to overlarge displacement of the counterweight block relative to the crane main body can be prevented.
Drawings
FIG. 1 is a three-dimensional view of an embodiment of the adjustable counterweight position crane of the present invention;
FIG. 2 is a schematic diagram of the combination of the balls, support plates and lugs of the embodiment of the crane with adjustable counterweight position of the present invention;
FIG. 3 is a three-dimensional view of a support plate in an embodiment of the adjustable counterweight position crane of the present invention;
FIG. 4 is a three-dimensional view of a hanger in an embodiment of the adjustable counterweight position crane of the present invention;
in the figure: 1. support, 2, hoist case, 3, backup pad, 31, screw hole, 4, counter weight, 5, hangers, 51, locating hole, 6, rolling groove, 7, ball, 8, ball holding hole, 9, hydraulic cylinder, 91, cylinder body, 92, piston rod, 10, otic placode.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the crane (hereinafter referred to as a crane) with the adjustable counterweight position comprises a crane main body and a counterweight, wherein the crane main body comprises a bracket 1 and a hoisting box 2, a support plate 3 is arranged at the bottom of the hoisting box 2, and the counterweight 4 is supported on the support plate 3 through a guide of a hanging lug 5. Specifically, as shown in fig. 2, three rolling grooves 6 extending in the guiding moving direction of the counterweight 4 are provided on the support plate 3, two ends of the rolling grooves 6 in the length direction are blind ends provided with blocking structures, the blocking structures are formed by corresponding groove side walls of the rolling grooves 6, the arrangement direction of the rolling grooves 6 is perpendicular to the guiding moving direction of the counterweight 4, and the support plate 3 forms a guiding track. The ball group used for supporting the hanging lug 5 in the vertical direction is arranged between the supporting plate 3 and the hanging lug 5, the guide rail is provided with a rolling matching surface used for being matched with the balls 7 in a rolling mode, the rolling matching surface is formed by the groove bottom of the rolling groove 6, and the hanging lug 5 is provided with a ball retaining hole 8 for enabling the corresponding balls 7 in the ball group to be partially embedded. In use, there is a clearance between the lugs 5 and the support plate 3, and as the counterweight 4 moves relative to the crane body, the balls 7 roll in the ball retaining holes 8 and are in rolling friction engagement with the rolling engagement surfaces, causing the counterweight 4 to move into position.
As shown in fig. 3 and 4, the crane further includes a limiting structure for keeping the counterweight 4 after the position adjustment at a relative position with the crane main body, and the limiting structure includes a threaded hole 31 arranged on the support plate 3 in a direction of guiding movement of the counterweight 4, a positioning hole 51 arranged on the suspension loop 5, and a bolt for matching the threaded hole 31 with the positioning hole 51. The diameter of the positioning hole 51 is slightly larger than that of the threaded hole 31, a bolt is connected in the positioning hole 51 through internal threads, and when the bolt is used, the bolt is matched with the hole wall of the positioning hole 51 in a stop mode so as to guarantee the relative position of the hanging lug 5 and the supporting plate 3.
The crane further comprises a hydraulic oil cylinder 9 which is used for providing moving power for the counterweight 4 and is horizontally arranged, the hydraulic oil cylinder 9 comprises a cylinder body 91 and a piston rod 92, the end portion, far away from one end of the piston rod 92, of the cylinder body 91 is fixed on the support 1, the end portion of the piston rod 92 is connected with the counterweight 4 through an ear plate 10 arranged on the counterweight 4, and when the hydraulic oil cylinder 9 acts, the counterweight 4 is pushed to move relative to the support 1 so as to adjust the relative position of the counterweight 4 and the crane body.
The invention relates to a method for adjusting a counterweight of a crane capable of adjusting the position of the counterweight, which comprises the following steps: when the hydraulic oil cylinder 9 is controlled to extend or retract the piston rod 92, the piston rod 92 pushes the counterweight 4 to move along the extending or retracting direction of the piston rod 92, the ball 7 rolls in the ball retaining hole 8 and is in rolling friction fit with the rolling matching surface, the counterweight 4 is moved to a proper position, then a bolt is inserted into the positioning hole 51 and screwed to be in reliable threaded fit with the threaded hole 31, and the position adjustment of the counterweight 4 is completed.
In other embodiments, the guide rail may be provided on the hanger, and the ball holding hole may be provided on the support plate.
In other embodiments, the balls may be arranged in one, two, or more than four rows perpendicular to the guiding direction of the counterweight, and in this case, a corresponding number of guide rails and ball holding holes may be provided.
In other embodiments, the rolling engagement surface may be in other forms, such as a flat surface of the support plate.
In other embodiments, the ball may be prevented from falling off the guide rail by means other than a blocking structure, for example, the ball may be prevented from falling off the guide rail by means of the extendable distance of the piston rod of the hydraulic cylinder, and the rolling groove may extend through the support plate in the longitudinal direction. In other embodiments, the limiting structure can be in other forms, for example, a set screw or a pin perpendicular to the guide moving direction of the counterweight, and the set screw or the pin can be arranged on the top surface or the side surface of the hanging lug.
In other embodiments, one or more than three positioning holes may also be disposed on the lifting lug, and when three or more than three positioning holes are disposed, the distance between adjacent positioning holes is an integral multiple of the distance between two connected threaded holes.
In other embodiments, the lifting lug and the support plate may be fixed after the relative position adjustment, for example, the unthreaded holes arranged on the support plate along the guiding moving direction of the counterweight, the threaded holes arranged on the lifting lug, and the threaded holes are internally threaded with bolts, when the bolts are used, the tail ends of the bolts extend into the unthreaded holes to be matched with the hole walls of the unthreaded holes for stop, so as to fix the relative positions of the lifting lug and the support plate.
Claims (8)
1. The crane with the adjustable counterweight position comprises a crane main body and a counterweight, wherein the crane main body is provided with a guide rail, and the counterweight is provided with a suspension loop; the counterweight is supported on the guide rail through the guide of the suspension loop;
the suspension hook is characterized in that a ball group used for supporting the suspension hook in the vertical direction is arranged between the guide track and the suspension hook, one of the guide track and the suspension hook is provided with a ball retaining hole for embedding a corresponding ball part in the ball group, and the other one of the guide track and the suspension hook is provided with a rolling matching surface used for being matched with the ball in a rolling way.
2. The crane according to claim 1, wherein the balls are arranged in at least two rows, each row of balls being arranged in a horizontal direction and the arrangement direction being perpendicular to the guiding direction of the counterweight.
3. The crane with the adjustable counterweight position as claimed in claim 1 or 2, wherein one of the guide rail and the hanger, which is provided with the rolling fitting surface, is provided with a rolling groove, and the rolling fitting surface is formed by a groove bottom of the rolling groove.
4. The crane with the adjustable counterweight position as claimed in claim 1 or 2, wherein a limiting structure is arranged between the crane main body and the counterweight or the suspension loop, and the limiting structure is used for keeping the counterweight after the position adjustment at a relative position with the crane main body.
5. The crane with the adjustable counterweight position as claimed in claim 4, wherein the limiting structure comprises a threaded hole arranged on the crane main body and a positioning hole arranged on the suspension loop along the guiding moving direction of the counterweight, the threaded hole is internally threaded with a bolt, and the bolt passes through the positioning hole to be matched with the wall of the positioning hole in a stopping manner in use.
6. The crane with the adjustable counterweight position as claimed in claim 5, wherein the number of the positioning holes is two along the guiding movement direction of the counterweight, and the distance between two positioning holes is integral multiple of the distance between two adjacent threaded holes.
7. The crane with the adjustable counterweight position as claimed in claim 3, wherein a support plate is fixed to the crane body, and the guide rail is formed by the support plate.
8. The crane with the adjustable counterweight position as claimed in claim 3, wherein the two ends of the rolling groove in the length direction are blind ends provided with blocking structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910543493.6A CN112110350A (en) | 2019-06-21 | 2019-06-21 | Crane with adjustable counterweight position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910543493.6A CN112110350A (en) | 2019-06-21 | 2019-06-21 | Crane with adjustable counterweight position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112110350A true CN112110350A (en) | 2020-12-22 |
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ID=73796343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910543493.6A Pending CN112110350A (en) | 2019-06-21 | 2019-06-21 | Crane with adjustable counterweight position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112110350A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661036A (en) * | 2021-03-22 | 2021-04-16 | 湖南工业职业技术学院 | Automobile crane and using method thereof |
| WO2023184766A1 (en) * | 2022-03-31 | 2023-10-05 | 三一海洋重工有限公司 | Center of gravity adjusting device, construction machine, and detection device |
-
2019
- 2019-06-21 CN CN201910543493.6A patent/CN112110350A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661036A (en) * | 2021-03-22 | 2021-04-16 | 湖南工业职业技术学院 | Automobile crane and using method thereof |
| CN112661036B (en) * | 2021-03-22 | 2021-05-28 | 湖南工业职业技术学院 | Automobile crane and using method thereof |
| WO2023184766A1 (en) * | 2022-03-31 | 2023-10-05 | 三一海洋重工有限公司 | Center of gravity adjusting device, construction machine, and detection device |
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