Hydraulic grab for palm car

Abstract

A kind of hydraulic grab of palm car, including grab connecting seat, grab cylinder, support connecting arm, cylinder connecting disc and bucket, the telescopic end of the grab cylinder is equipped with cylinder connecting disc, the disc surface of the cylinder connecting disc is vertically arranged with the telescopic end of grab cylinder, the cylinder body top of the grab cylinder is also welded with several cylinder branch arms outwardly and uniformly, the cylinder branch arm is hinged to one end of support connecting arm, the other end of support connecting arm is hinged to the top of bucket, the top of bucket is also provided with hole for being hingedly arranged with cylinder connecting disc.The utility model discloses the close cooperation between grab connecting seat, grab cylinder, support connecting arm, cylinder connecting disc and bucket, stabilizes component connection, even long working time, can keep grabbing stable, the design of multi-petal type grab, can be well wrapped palm fruit, also can make grab more convenient and flexible.

Description

Technical Field

[0001] This utility model relates to the field of palm truck technology, specifically to a hydraulic grab bucket for a palm truck. Background Technology

[0002] As modern agriculture becomes increasingly mechanized, some physically demanding jobs and farm work are gradually being replaced by agricultural machinery. The palm harvester is a new type of agricultural machinery used for picking and transporting palm fruits, which can improve the efficiency of picking operations.

[0003] Existing palm fruit grabbers have a rather crude and rudimentary design. Each grab picks up a large number of palm fruits, but due to the large size of the fruits, the grabber, with loose parts or inadequate sealing, cannot properly contain them, causing the fruits to easily fall out. Furthermore, over time, the grabber becomes unstable during opening and closing, affecting the grabbing efficiency. Therefore, this invention designs a hydraulic grabber for palm fruit grabbers to solve the aforementioned technical problems. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the purpose of this invention is to provide a hydraulic grab for palm fruit trucks, solving the problems that the grab cannot properly enclose the palm fruit, and that instability during opening and closing operations under long working hours affects the grabbing effect.

[0005] This utility model is achieved through the following technical solution:

[0006] A hydraulic grab for a palm oil truck includes a grab bucket connecting seat, a grab bucket cylinder, a support connecting arm, a cylinder connecting plate, and bucket flaps. The top of the grab bucket connecting seat is hinged to the palm oil truck's picking arm. The bottom of the grab bucket connecting seat is bolted to a cylinder connecting seat constructed on the top of the grab bucket cylinder's cylinder body. The telescopic end of the grab bucket cylinder is equipped with a cylinder connecting plate, the surface of which is perpendicular to the telescopic end of the grab bucket cylinder. The top of the grab bucket cylinder's cylinder body is also uniformly welded outwards. There are several hydraulic cylinder branch arms, each hinged to one end of a support connecting arm. The other end of the support connecting arm is hinged to the top of the bucket petal. The top of the bucket petal also has a hole for hinged connection with the hydraulic cylinder connecting plate. The rod-side and rodless sides of the grab cylinder are connected to a multi-way valve via oil pipes. The number of hydraulic cylinder branch arms, support connecting arms, and bucket petals is the same. When several bucket petals are pulled and closed by the retraction of the telescopic end of the grab cylinder, the picked-up palm fruits will not fall off.

[0007] Preferably, the grab bucket connecting seat includes a bushing, a perforated plate, and a reinforcing connecting plate. The top of the perforated plate is welded with a bushing, and the bushing is provided with a lubricating oil port. The inner hole of the bushing matches the picking arm and is connected to the picking arm by a pin. The bottom of the perforated plate is provided with a hole that matches the hole opened on the hydraulic cylinder connecting seat and is fixedly connected by bolts. Reinforcing connecting plates are welded to both sides of the perforated plate.

[0008] Preferably, the grab cylinder is provided with multiple sets of oil seals and dustproof rings, and an oil pipe connector is welded to the top of the grab cylinder. The oil pipe connector has holes for laying oil pipes.

[0009] Preferably, the support connecting arm is welded from two parallel arm plates, the distance between the two arm plates is matched with the thickness of the cylinder branch arm, and each support connecting arm has holes at both ends. The hole at one end matches the hole on the cylinder branch arm and is connected by a lubricating bearing and then a bolt. The hole at the other end matches the hole at the top of the bucket petal and is connected by a lubricating bearing and then a bolt.

[0010] Preferably, the bucket flap includes a gripper flap, gripper teeth, and gripper flap connecting seat welded together. The sides of the gripper flap are provided with reinforcing ribs. The gripper flap connecting seat has a first mounting hole and a second mounting hole. The first mounting hole matches the hole at the other end of the support connecting arm and is connected by a lubricating bearing and then a bolt. The second mounting hole matches the hole on the oil cylinder connecting plate and is connected by a lubricating bearing and then a bolt.

[0011] Preferably, the hydraulic cylinder connecting plate includes an intermediate plate and connecting arms arranged in a uniform circumference around the intermediate plate. The intermediate plate and the connecting arms are integrally formed. A connecting hole is provided in the middle of the intermediate plate. When the telescopic end of the grab cylinder is perpendicularly passed through the connecting hole to the appropriate position, it is fastened with bolts. The connecting arm is constructed of two parallel arm forks. The distance between the two arm forks matches the thickness of the grab petal connecting seat. A connecting hole is provided at the end of each connecting arm away from the intermediate plate. The hole matches the mounting hole and is connected by a lubricating bearing and then bolts are inserted for connection.

[0012] Preferably, the number of the cylinder branch arm, the support connecting arm, the connecting arm, and the bucket flap are all four.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model secures the component connection through the tight cooperation between the grab bucket connecting seat, grab bucket cylinder, support connecting arm, cylinder connecting plate and bucket petals. Even with long working hours, it can maintain stable grabbing. The multi-petal grab bucket design can well wrap the palm fruit and make grabbing more convenient and flexible.

[0015] 2. In designing this utility model, we took into account the full utilization of the hydraulic system of the palm truck, so that no other power source is needed. The opening and closing of the grab bucket are all hydraulically designed to maintain stable grabbing.

[0016] 3. This utility model uses lubricating bearings to pass through the connecting holes on the support connecting arm, the oil cylinder branch arm, and the grab flap connecting seat, so that the grab bucket can be fully lubricated during operation and its service life can be extended. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the hydraulic grab bucket of the palm-shaped vehicle of this utility model;

[0019] Figure 2 for Figure 1 Top view;

[0020] Figure 3 This is a schematic diagram of the structure of the grab bucket connecting seat of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the grab bucket cylinder of this utility model;

[0022] Figure 5 This is a cross-sectional view of the grab bucket cylinder of this utility model with an oil pipe connector installed.

[0023] Figure 6 This is a top view of the grab bucket cylinder of this utility model with an oil pipe connector installed.

[0024] Figure 7 This is a schematic diagram of the structure of the supporting connecting arm of this utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the hydraulic cylinder connecting plate of this utility model;

[0026] Figure 9 This is a schematic diagram of the structure of the lobes of this utility model.

[0027] The components include: grab bucket connecting seat 1, bushing 101, inner hole 1011, lubricating oil port 1012, perforated plate 102, reinforcing connecting plate 103, grab bucket cylinder 2, cylinder connecting seat 201, cylinder branch arm 202, oil pipe connecting seat 203, support connecting arm 3, arm plate 301, cylinder connecting disc 4, intermediate disc 401, connecting hole 4011, connecting arm 402, arm fork 4021, bucket petal 5, grab petal 501, grab tooth 502, grab petal connecting seat 503, mounting hole one 5031, mounting hole two 5032, reinforcing rib 504, lubricating bearing 6, oil seal 7, and dustproof ring 8. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0030] Figure 1-9 A hydraulic grab for a palm fruit truck is shown, including a grab connecting seat 1, a grab cylinder 2, a support connecting arm 3, a cylinder connecting plate 4, and a grab flap 5. The top of the grab connecting seat 1 is hinged to the picking arm of the palm fruit truck. One end of the cylinder body of the grab cylinder 2 is fixed to the grab connecting seat 1 by bolts. The telescopic end of the grab cylinder 2 is equipped with a cylinder connecting plate 4. The plate surface of the cylinder connecting plate 4 is perpendicular to the telescopic end of the grab cylinder 2. Several cylinder branch arms 202 are also provided on the cylinder body of the grab cylinder 2 and are hinged to one end of the support connecting arm 3. The other end of the support connecting arm 3 is hinged to the top of the grab flap 5. The top of the grab flap 5 is also provided with a hole for hinged connection with the cylinder connecting plate 4. The rod chamber and rodless chamber of the grab cylinder 2 are connected to a multi-way valve through oil pipes. During normal operation, the grab cylinder 2 extends and retracts, pulling the opening and closing of the grab flap 5 to achieve the purpose of grabbing and picking up palm fruits. The number of cylinder branch arm 202, support connecting arm 3, and bucket petals 5 are the same. When several bucket petals 5 are pulled and closed by the retraction of the telescopic end of the grab bucket cylinder 2, the bucket petals 5 surround each other, and the gap is smaller than the volume of the palm fruit, so that the picked palm fruit will not fall.

[0031] This invention fully utilizes the palm fruit carrier's built-in hydraulic system, eliminating the need for additional power sources. The opening and closing of the grab bucket are hydraulically designed to maintain stable gripping. The tight fit between the grab bucket connecting seat 1, grab bucket cylinder 2, support connecting arm 3, cylinder connecting plate 4, and bucket segments 5 secures the component connections, ensuring stable gripping even during extended working hours. The multi-segment grab bucket design effectively encloses the palm fruit and makes gripping more convenient and flexible.

[0032] Combination Figure 1 , Figure 4 and Figure 6 The grab cylinder 2 includes a cylinder body, a cylinder connecting seat 201, cylinder branch arms 202, and an oil pipe connecting seat 203. The bottom of the grab connecting seat 1 is bolted to the cylinder connecting seat 201 constructed on the top of the grab cylinder 2's cylinder body. Several cylinder branch arms 202 are evenly welded outwards from the top of the grab cylinder 2's cylinder body. Each cylinder branch arm 202 is hinged to one end of a supporting connecting arm 3. An oil pipe connecting seat 203 is also welded to the top of the grab cylinder 2's cylinder body, and the oil pipe connecting seat 203 has a hole c for laying an oil pipe. Figure 5 The grab cylinder 2 is equipped with multiple sets of oil seals 7 and dust seals 8 to ensure the sealing of the cylinder and the stability of operation.

[0033] like Figure 3 The grab bucket connecting seat 1 includes a bushing 101, a perforated plate 102, and a reinforcing connecting plate 103. The bushing 101 is welded to the top of the perforated plate 102, and the bushing 101 has a lubrication port 1012 for assembling an oil nozzle. The inner hole 1011 of the bushing 101 matches the picking arm and is connected to the picking arm by a pin, facilitating installation, disassembly, and maintenance. The bottom of the perforated plate 102 has a hole a, which matches a hole b on the cylinder connecting seat 201 and is fixedly connected by bolts. Reinforcing connecting plates 103 are welded to both sides of the perforated plate 102 to increase the strength of the grab bucket connecting seat 1.

[0034] like Figure 7 The supporting connecting arm 3 is welded together from two parallel arm plates 301. Figure 2 The distance D1 between the two arm plates 301 matches the thickness of the hydraulic cylinder branch arm 202, facilitating assembly, disassembly, and maintenance. Each support connecting arm 3 has holes d at both ends. One end's hole d matches a hole e on the hydraulic cylinder branch arm 202, and is connected via a lubricating bearing 6 and then bolted in. The other end's hole d matches a hole on the top of the bucket flap 5, and is also connected via a lubricating bearing 6 and then bolted in. The lubricating bearing 6 ensures adequate lubrication during grab bucket operation, extending its service life (the same applies below).

[0035] like Figure 9The grabber 5 comprises a welded-in grabber 501, a grabber tooth 502, and a grabber connecting seat 503 for easy subsequent assembly. The grabber 501 can be made of bent steel plate, the grabber tooth 502 can be made of machined and bent round steel, and the reinforcing rib 503 can be made of bent round steel. Reinforcing ribs 504 are provided on both sides of the grabber 501. The grabber connecting seat 503 has two mounting holes: a first mounting hole 5031 and a second mounting hole 5032. The first mounting hole 5031 matches the hole d at the other end of the supporting connecting arm 3, and is connected by a lubricating bearing 6 and then bolts. The second mounting hole 5032 matches the hole on the cylinder connecting plate 4, and is connected by a lubricating bearing 6 and then bolts.

[0036] like Figure 8 The hydraulic cylinder connecting plate 4 includes an integrally formed intermediate plate 401 and connecting arms 402. The connecting arms 402 are arranged in a uniform circumference around the intermediate plate 401. A connecting hole 4011 is provided in the middle of the intermediate plate 401. The telescopic end of the grab cylinder 2 is passed vertically through the connecting hole 4011 and then tightened with bolts when it reaches the appropriate position. The connecting arm 402 is constructed from two parallel arm forks 4021. The distance between the two arm forks 4021 matches the thickness of the grab petal connecting seat 503. A hole f is provided at the end of each connecting arm 402 away from the intermediate plate 401. It matches the mounting hole 5032 and is connected by a lubricating bearing 6 and then bolts are inserted.

[0037] like Figure 2 and Figure 6 The design showcases four hydraulic cylinder branch arms 202, four support connecting arms 3, four connecting arms 402, and four lobes 5, arranged in a coordinated manner. These four lobes 5 enclose a space capable of holding multiple palm fruits. Each lobe 5 does not need to be too large, allowing for more convenient and flexible grasping.

[0038] After multiple trial productions, this utility model has demonstrated a reasonable structural design, convenient disassembly and installation, easy procurement of raw materials, low manufacturing cost, and a competitive advantage in the market. It is now in mass production and is worthy of promotion and use in the same industry.

[0039] The working principle of this utility model:

[0040] like Figures 1-9Oil is supplied through the oil pipe laid on the oil pipe connector 203, causing the telescopic end of the grab cylinder 2 to retract. At this time, the intermediate plate 401 fixed to the telescopic end of the grab cylinder 2 moves accordingly, causing the entire cylinder connector 4 to move vertically upward. The connecting arm 402 drives the grab petal connector 503, which is hinged to it, to rotate. The grab petals 501 and grab teeth 502 on the grab petal 5 move accordingly, enveloping the palm fruit. Similarly, the telescopic end of the grab cylinder 2 extends, eventually causing the grab petals 501 and grab teeth 502 to open and release the palm fruit. Because a support connecting arm 3 is added to the grab petal 5, the grab petal connector 503 is more stable when rotating, and its precise movement is not affected even after long-term operation, thus maintaining the stable opening and closing of the grab petals 501 and grab teeth 502 and improving the quality of grabbing work.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic grab for a palm oil truck, characterized in that: The system includes a grab bucket connecting seat (1), a grab bucket cylinder (2), a support connecting arm (3), a cylinder connecting plate (4), and bucket flaps (5). The top of the grab bucket connecting seat (1) is hinged to the picking arm of the palm truck. The bottom of the grab bucket connecting seat (1) is fixedly connected to the cylinder connecting seat (201) constructed on the top of the cylinder body of the grab bucket cylinder (2) by bolts. The telescopic end of the grab bucket cylinder (2) is equipped with a cylinder connecting plate (4). The plate surface of the cylinder connecting plate (4) is perpendicular to the telescopic end of the grab bucket cylinder (2). Several cylinder sub-distributors are also evenly welded outward from the top of the cylinder body of the grab bucket cylinder (2). The support arm (202) is hinged to one end of the support connecting arm (3), and the other end of the support connecting arm (3) is hinged to the top of the bucket petal (5). The top of the bucket petal (5) is also provided with a hole for hinged connection with the cylinder connecting plate (4). The rod chamber and rodless chamber of the grab cylinder (2) are connected to the multi-way valve through oil pipes. The number of the cylinder branch arm (202), the support connecting arm (3), and the bucket petal (5) are the same. When several bucket petals (5) are pulled and closed by the retraction of the telescopic end of the grab cylinder (2), the picked palm fruit will not fall off.

2. The hydraulic grab bucket of the palm truck according to claim 1, characterized in that: The grab bucket connecting seat (1) includes a bushing (101), a perforated plate (102), and a reinforcing connecting plate (103). The top of the perforated plate (102) is welded with the bushing (101). The bushing (101) is provided with a lubricating oil port (1012). The inner hole (1011) of the bushing (101) matches the picking arm and is connected to the picking arm by a pin. The bottom of the perforated plate (102) is provided with a hole a, which matches the hole b opened on the cylinder connecting seat (201) and is fixedly connected by bolts. The two sides of the perforated plate (102) are welded with reinforcing connecting plates (103).

3. The hydraulic grab bucket of the palm truck according to claim 1, characterized in that: The grab cylinder (2) is provided with multiple sets of oil seals (7) and dustproof rings (8). The top of the grab cylinder (2) is also welded with an oil pipe connector (203). The oil pipe connector (203) has a hole c for laying oil pipes.

4. The hydraulic grab bucket of the palm truck according to claim 1, characterized in that: The support connecting arm (3) is welded from two parallel arm plates (301). The distance between the two arm plates (301) matches the thickness of the cylinder branch arm (202). Each support connecting arm (3) has holes d at both ends. The hole d at one end matches the hole e opened on the cylinder branch arm (202) and is connected by a lubricating bearing (6) and then bolts. The hole d at the other end matches the hole opened on the top of the bucket petal (5) and is connected by a lubricating bearing (6) and then bolts.

5. The hydraulic grab bucket of the palm truck according to claim 1 or 4, characterized in that: The flapper (5) includes a gripper (501), gripper teeth (502) and gripper connecting seat (503) welded together. The sides of the gripper (501) are provided with reinforcing ribs (504). The gripper connecting seat (503) is provided with mounting hole one (5031) and mounting hole two (5032). Mounting hole one (5031) matches the hole d at the other end of the support connecting arm (3) and is connected by a lubricating bearing (6) and then bolts are inserted. Mounting hole two (5032) matches the hole on the oil cylinder connecting plate (4) and is connected by a lubricating bearing (6) and then bolts are inserted.

6. The hydraulic grab bucket of the palm truck according to claim 5, characterized in that: The cylinder connecting plate (4) includes an intermediate plate (401) and connecting arms (402) arranged in a uniform circumference around the intermediate plate (401). The intermediate plate (401) and the connecting arms (402) are integrally formed. A connecting hole (4011) is provided in the middle position of the intermediate plate (401). When the telescopic end of the grab cylinder (2) is vertically passed through the connecting hole (4011) to the appropriate position, it is fastened with bolts. The connecting arm (402) is constructed from two parallel arm forks (4021). The distance between the two arm forks (4021) matches the thickness of the grab petal connecting seat (503). A hole f is provided at one end of each connecting arm (402) away from the intermediate plate (401). It matches the mounting hole two (5032) and is connected by a lubricating bearing (6). Then, bolts are inserted for connection.

7. The hydraulic grab bucket of the palm truck according to claim 6, characterized in that: The number of the cylinder branch arm (202), support connecting arm (3), connecting arm (402), and bucket petal (5) are all 4.

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