Single cable ground opening timber grab with double cushioned ram

Abstract

The utility model relates to timber grab bucket technical field, and disclose a single cable landing opening timber grab bucket with double buffer oil cylinder, including installation component and unloading force subassembly, the installation component includes upper bearing beam, the outer wall of upper bearing beam is equipped with lower bearing beam, the guide rail is equipped between lower bearing beam and upper bearing beam, the outer wall slidingly connected with slide of guide rail. The single cable landing opening timber grab bucket with double buffer oil cylinder, through the upper bearing beam, lower bearing beam, bracing piece, hydraulic cylinder, slide structure that set up, make the grab bucket after the timber is grabbed, the gravity of timber will make the grab tooth rotate, the flow rate of hydraulic oil in hydraulic cylinder and the oil amount in two oil cylinders can adjust at this moment, therefore the user can through the expansion of hydraulic cylinder output shaft to the vibration force that the grab tooth opens produces buffer, therefore avoid the vibration force too big influence the service life of the part in this grab bucket, guarantee that the grab bucket can only open slowly, and further improved the safety and practicality of the grab bucket.

Description

Technical Field

[0001] This utility model relates to the field of timber grabbing technology, specifically a single-rope landing and opening timber grabbing with double buffer cylinders. Background Technology

[0002] A grab bucket is a specialized loading and unloading tool used by cranes to grab dry bulk goods. It belongs to the bucket category in the machinery industry and is usually made of manganese steel. It consists of two or more openable and closable jaw plates that form a cargo space. The material is grabbed and unloaded by means of wire ropes. It is characterized by high loading and unloading efficiency and low labor intensity. According to their structure, they can be divided into shell-shaped grabs and orange-segment grabs; according to the type of cargo they handle, they can be divided into ore grabs, coal grabs, grain grabs, and timber grabs.

[0003] Conventional single-rope ground-opening timber grabs have a long guide rail extending from the center, increasing the usable height, installation height, and floor space of existing grabs. Especially when the grab is transported in a tilted position, the guide rail is prone to bending when it touches the ground, causing the grab to malfunction. In addition, the timber opens at a very high instantaneous speed, resulting in significant vibration. The mechanical buffer after opening to the bottom in conventional designs will have a certain rebound, at which point the wire rope is prone to breakage, and the single guide rail guide star wheel is prone to jamming, causing the grab to operate unevenly. To address these issues, we have proposed a single-rope ground-opening timber grab with double buffer cylinders. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a single-rope landing and opening timber grab with dual buffer cylinders, thereby solving the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a single-rope landing and opening timber grab bucket with double buffer cylinders, comprising an installation assembly and a force-relieving assembly. The installation assembly includes an upper support beam, a lower support beam on the outer wall of the upper support beam, a guide rail between the lower support beam and the upper support beam, a sliding block slidably connected to the outer wall of the guide rail, a fixed wedge sleeve at the bottom of the sliding block, a star wheel on the outer wall of the sliding block, a hydraulic cylinder between the upper support beam and the lower support beam, a stop block fixedly assembled to the top of the lower support beam below the sliding block, a support rod rotatably connected to the outer wall of the upper support beam, a rope guide at the top of the upper support beam, and bucket teeth rotatably connected to the outer wall of the support rod. The stress-relieving assembly includes a balance bar, a large shackle is fixedly mounted on the top of the balance bar, a long ring is provided on the inner wall of the large shackle, small shackles are provided on both sides of the balance bar, steel wire ropes are provided on the inner wall of the small shackles, a pulley is provided on the outer wall of the upper support beam, and a pulley is provided on the outer wall of the slide block.

[0006] Through the above technical solution, and by setting up installation components, rope guides, bucket teeth, upper support beam, lower support beam, struts, stop blocks, fixed wedge sleeves, guide rails, star wheels, and hydraulic cylinder structures, the timber grab bucket allows the user to lower it via a crane sling, bringing the star wheel into contact with the stop block. The lower support beam is then retrieved via the crane sling, causing it to rise along with the slide to complete the timber grabbing operation. When releasing the timber, the slide moves down, and the star wheel re-engages with the stop block, disengaging from the cone block. When the sling is retrieved, only the slide moves up, while the timber on the bucket teeth automatically detaches due to gravity. At this point, the two hydraulic cylinders buffer the released shear force, achieving a slow opening of the bucket teeth, thus improving the safety of the grab bucket and extending its service life.

[0007] Preferably, the number of hydraulic cylinders is two, and both hydraulic cylinders are symmetrically distributed along the outer wall of the guide rail. The outer wall of the lower bearing beam is fixedly assembled with the outer wall of the hydraulic cylinder, and the output shaft of the hydraulic cylinder is fixedly assembled with the outer wall of the slide.

[0008] Through the above technical solution, the two hydraulic cylinders are designed so that during use, the hydraulic cylinders on both sides of the guide rail can buffer the shear force on a set of bucket teeth, thereby ensuring that the wood will not suddenly detach from the bucket teeth during release, thus ensuring the effect of slow release of the wood by the grab bucket.

[0009] Preferably, there are two star wheels, and the positions of the two star wheels correspond to the positions of the lower openings of a stop block, and the two star wheels are symmetrically distributed along the outer wall of the guide rail.

[0010] Through the above technical solution, the two star wheel structures are designed to connect the slide and the lower support beam during operation, thereby ensuring that neither the slide nor the lower support beam will tilt or loosen when they are rising, thus improving the stability of the grab during operation.

[0011] Preferably, the long ring is connected to the hook of the gantry crane, and the outer wall of the wire rope is rolledly connected to the outer walls of pulley one and pulley two respectively.

[0012] Through the above technical solution, the long ring structure allows the user to connect the grab bucket to the crane via the quick-release mechanism of the long ring during use, thus facilitating the user's assembly and disassembly of the grab bucket and improving its practicality.

[0013] Preferably, the end of the wire rope away from the small shackle is fixedly connected to the slide block via a fixed wedge sleeve, the number of bucket teeth is two, and the two bucket teeth are staggered along the central axis of the slide block, and the outer wall of the bucket teeth is rotatably connected to the outer wall of the support rod.

[0014] Through the above technical solution, the strut structure allows the grab bucket to rotate between the bucket teeth and the strut by raising and lowering the lower support beam during operation. This enables the bucket teeth to open or close, facilitating the user's grabbing and hoisting of timber and ensuring the normal operation of the grab bucket.

[0015] Preferably, the outer wall of the rope guide is rolledly connected to one end of the pulley near the fixed wedge sleeve, the outer wall of the guide rail is provided with a cone block, and the slide block is fixedly connected to the cone block through a star wheel.

[0016] Through the above technical solution, by setting the cone block and star wheel structure, the grab bucket can make the star wheel contact the cone block by lowering the slide during use. This ensures that the grab bucket can only complete the connection or release operation between the slide and the lower support beam by raising and lowering the slide during operation, avoiding insufficient gripping or clamping force of the components during single-pass operation, thereby improving the stability of the wood during the grabbing process.

[0017] Compared with the prior art, this utility model provides a single-rope landing and opening timber grab with double buffer cylinders, which has the following beneficial effects: 1. This single-cable ground-opening timber grab with double buffer cylinders utilizes an upper and lower support beam, struts, hydraulic cylinders, and a sliding block structure. After grabbing timber, the weight of the timber causes the bucket teeth to rotate. The flow rate of hydraulic oil in the hydraulic cylinders and the amount of oil in the two cylinders can be adjusted. Therefore, the user can buffer the vibration force generated when the bucket teeth open by extending and retracting the hydraulic cylinder output shaft. This prevents excessive vibration from affecting the service life of the parts in the grab and ensures that the grab can only open slowly, thereby improving the safety and practicality of the grab.

[0018] 2. This single-rope landing and opening timber grab bucket with double buffer cylinders utilizes a double-lobed grab bucket layout and employs two hydraulic cylinders for buffering, which greatly shortens the length of the guide rail and reduces the working height of the grab bucket, improving the user's work efficiency. At the same time, the shortened guide rail also facilitates the user's maintenance of the grab bucket and further reduces the grab bucket's space occupation, thereby improving the grab bucket's practicality. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the hoisting component structure of this utility model; Figure 4This is a schematic diagram of the force-relieving component structure of this utility model.

[0020] The components include: 1. Installation components; 101. Upper support beam; 102. Lower support beam; 103. Support rod; 104. Stop; 105. Fixed wedge sleeve; 106. Guide rail; 107. Star wheel; 108. Hydraulic cylinder; 109. Slide seat; 2. Rope guide; 3. Bucket teeth; 4. Unloading components; 401. Balance bar; 402. Long ring; 403. Large shackle; 404. Small shackle; 405. Wire rope; 406. Pulley one; 407. Pulley two. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-4 As shown, the present invention provides a single-rope landing and opening timber grab bucket with double buffer cylinders, including an installation component 1 and a force unloading component 4. The installation component 1 includes an upper support beam 101, a lower support beam 102 on the outer wall of the upper support beam 101, a guide rail 106 between the lower support beam 102 and the upper support beam 101, a slide block 109 slidably connected to the outer wall of the guide rail 106, a fixed wedge sleeve 105 at the bottom of the slide block 109, a star wheel 107 on the outer wall of the slide block 109, a hydraulic cylinder 108 between the upper support beam 101 and the lower support beam 102, a stop iron 104 fixedly assembled to the top of the lower support beam 102 below the slide block 109, a support rod 103 rotatably connected to the outer wall of the upper support beam 101, a rope guide 2 at the top of the upper support beam 101, and bucket teeth 3 rotatably connected to the outer wall of the support rod 103. The unloading assembly 4 includes a balance bar 401, a large shackle 403 fixedly mounted on the top of the balance bar 401, a long ring 402 on the inner wall of the large shackle 403, small shackles 404 on both sides of the balance bar 401, a steel wire rope 405 on the inner wall of the small shackles 404, a pulley 406 on the outer wall of the upper support beam 101, and a pulley 407 on the outer wall of the slide block 109.

[0023] The advantage is that, through the structure of the installation components 1, rope guide 2, bucket teeth 3, upper support beam 101, lower support beam 102, support rod 103, stop 104, fixed wedge sleeve 105, guide rail 106, star wheel 107, and hydraulic cylinder 108, the timber grab can be lowered by the user using a crane sling to bring the star wheel 107 into contact with the stop 104, and then the lower support beam 102 can be retrieved by the crane sling. At this time, the lower support beam 102 will be together with the slide 109. After the lifting operation is completed and the timber is released, the slide 109 moves down, and the star wheel 107 will re-engage with the stop 104, thereby causing the star wheel 107 to disengage from the cone block. When the sling is retracted, it will only drive the slide 109 to move up, and the timber on the bucket teeth 3 will automatically disengage from the bucket teeth 3 due to gravity. At this time, the two hydraulic cylinders 108 will buffer the released shear force, thereby achieving the effect of slowly opening the bucket teeth 3, which improves the safety of the grab bucket and extends its service life.

[0024] Specifically: There are two hydraulic cylinders 108, and both hydraulic cylinders 108 are symmetrically distributed along the outer wall of the guide rail 106. The outer wall of the lower support beam 102 is fixedly assembled with the outer wall of the hydraulic cylinder 108, and the output shaft of the hydraulic cylinder 108 is fixedly assembled with the outer wall of the slide block 109.

[0025] The advantage is that, through the structure of two hydraulic cylinders 108, the grab bucket can buffer the shear force on a set of bucket teeth 3 by using the hydraulic cylinders 108 on both sides of the guide rail 106 during use, thereby ensuring that the wood will not suddenly detach from the bucket teeth 3 during the release process, thus ensuring the effect of the grab bucket in slowly releasing the wood.

[0026] Specifically: There are two star wheels 107, and the positions of the two star wheels 107 correspond to the positions of the lower openings of a stop block 104, and the two star wheels 107 are symmetrically distributed along the outer wall of the guide rail 106.

[0027] The advantage is that, through the structure of the two star wheels 107, the grab bucket connects the slide 109 and the lower support beam 102 during operation, thereby ensuring that neither the slide 109 nor the lower support beam 102 will tilt or loosen when they are rising, thus improving the stability of the grab bucket during operation.

[0028] Specifically: the long ring 402 is connected to the hook of the gantry crane, and the outer wall of the wire rope 405 is rolledly connected to the outer walls of pulley 1 406 and pulley 2 407 respectively.

[0029] The advantage is that the long ring 402 structure allows the user to connect the grab bucket to the crane during use, making it easier for the user to assemble and disassemble the grab bucket and thus improving its practicality.

[0030] Specifically: the end of the wire rope 405 away from the small shackle 404 is fixedly connected to the slide block 109 through the fixed wedge sleeve 105. There are two bucket teeth 3, and the two bucket teeth 3 are staggered along the central axis of the slide block 109. The outer wall of the bucket teeth 3 is rotatably connected to the outer wall of the support rod 103.

[0031] The advantage is that, through the structure of the support rod 103, the grab bucket can rotate between the bucket teeth 3 and the support rod 103 by raising and lowering the lower support beam 102 during operation, so that the bucket teeth 3 can open or close, which makes it easier for users to grab and lift timber, thereby ensuring the normal operation of the grab bucket.

[0032] Specifically: the outer wall of the rope guide 2 is rolledly connected to one end of the pulley 406 near the fixed wedge sleeve 105, the outer wall of the guide rail 106 is provided with a cone block, and the slide block 109 is fixedly connected to the cone block through the star wheel 107.

[0033] The advantage is that, through the design of the cone block and star wheel 107, the grab bucket can make the star wheel 107 contact the cone block by lowering the slide 109 during use. This ensures that during operation, the grab bucket can only connect or release the slide 109 and the lower support beam 102 by raising and lowering the slide 109. This avoids insufficient gripping or clamping force during single-pass operation, thereby improving the stability of the wood during the grabbing process.

[0034] Working principle: After installing the grab bucket, the user can first lower the slide 109 by extending the crane sling, causing the star wheel 107 on the slide 109 to contact the stop 104. At this time, the star wheel 107 is deflected under pressure, causing the cone block on the guide rail 106 to contact and lock with the star wheel 107. Then, the slide 109 connects to the lower support beam 102. When the slide 109 rises due to the sling retraction, the lower support beam 102 also rises, causing the two bucket teeth 3 to rotate and complete the grabbing operation of the timber. When releasing the timber, the slide 109 descends again, causing the star wheel 107 to contact the stop 104 again and deflect, disengaging from the cone block. After the slide 109 rises, the weight of the timber will cause the bucket teeth 3 to rotate. Because the flow rate of the hydraulic oil is adjustable, the extension and retraction speed of the output shaft of the hydraulic cylinder 108 determines the opening speed of the bucket teeth 3. This avoids excessive vibration affecting the service life of the parts in the grab bucket, ensuring that the grab bucket can only open slowly, thereby improving the safety and practicality of the grab bucket. During the release process, the components are not subjected to a sudden and excessive load, reducing the wear of each component and extending the service life of the grab bucket. Furthermore, the grab bucket adopts the layout structure of a double-lobed grab bucket, using two hydraulic cylinders 108 for buffering, which greatly shortens the length of the guide rail 106 and reduces the working height of the grab bucket, improving the user's work efficiency and thus enhancing the practicality of the grab bucket.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-rope landing and opening timber grab with double buffer cylinders, comprising an installation assembly (1) and a force-discharging assembly (4), characterized in that: The installation assembly (1) includes an upper support beam (101), a lower support beam (102) on the outer wall of the upper support beam (101), a guide rail (106) between the lower support beam (102) and the upper support beam (101), a slide block (109) slidably connected to the outer wall of the guide rail (106), a fixed wedge sleeve (105) at the bottom of the slide block (109), a star wheel (107) on the outer wall of the slide block (109), a hydraulic cylinder (108) between the upper support beam (101) and the lower support beam (102), a stop (104) fixedly assembled to the top of the lower support beam (102) below the slide block (109), a support rod (103) rotatably connected to the outer wall of the upper support beam (101), a rope guide (2) at the top of the upper support beam (101), and a bucket tooth (3) rotatably connected to the outer wall of the support rod (103). The unloading assembly (4) includes a balance bar (401), a large shackle (403) is fixedly mounted on the top of the balance bar (401), a long ring (402) is provided on the inner wall of the large shackle (403), small shackles (404) are provided on both sides of the balance bar (401), a steel wire rope (405) is provided on the inner wall of the small shackles (404), a pulley (406) is provided on the outer wall of the upper support beam (101), and a pulley (407) is provided on the outer wall of the slide block (109).

2. The single-rope landing and opening timber grab bucket with double buffer cylinders according to claim 1, characterized in that: The number of hydraulic cylinders (108) is two, and both hydraulic cylinders (108) are symmetrically distributed along the outer wall of the guide rail (106). The outer wall of the lower support beam (102) is fixedly assembled with the outer wall of the hydraulic cylinder (108), and the output shaft of the hydraulic cylinder (108) is fixedly assembled with the outer wall of the slide (109).

3. A single-rope landing and opening timber grab with double buffer cylinders as described in claim 1, characterized in that: There are two star wheels (107), and the positions of the two star wheels (107) correspond to the positions of the lower openings of a stop (104), and the two star wheels (107) are symmetrically distributed along the outer wall of the guide rail (106).

4. A single-rope landing and opening timber grab with double buffer cylinders as described in claim 1, characterized in that: The long ring (402) is connected to the hook of the gantry crane, and the outer wall of the wire rope (405) is rolledly connected to the outer walls of pulley one (406) and pulley two (407).

5. A single-rope landing and opening timber grab with double buffer cylinders as described in claim 1, characterized in that: The end of the wire rope (405) away from the small shackle (404) is fixedly connected to the slide (109) through a fixed wedge sleeve (105). There are two bucket teeth (3), and the two bucket teeth (3) are staggered along the central axis of the slide (109). The outer wall of the bucket teeth (3) is rotatably connected to the outer wall of the support rod (103).

6. A single-rope landing and opening timber grab with double buffer cylinders according to claim 1, characterized in that: The outer wall of the guide rope (2) is rolledly connected to the end of the pulley (406) near the fixed wedge sleeve (105). The outer wall of the guide rail (106) is provided with a cone block, and the slide block (109) is fixedly connected to the cone block through the star wheel (107).

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