Rotary joint of spray boom type sprayer

Abstract

The utility model relates to the technical field of boom sprayers, in particular to a rotary joint of a boom sprayer, and aims to solve the technical problems that a rotary joint in the prior art is only hinged, and although the structure can realize rotation of a boom, the rotary joint is insufficient in stability, poor in bearing capacity and easy to break. A first U-shaped plate is connected to the end of the fixed spraying rod, a second U-shaped plate is buckled outside the first U-shaped plate, the first U-shaped plate is hinged to the upper portion of the second U-shaped plate, the second U-shaped plate is connected with the rotating spraying rod through a reinforcing square barrel, a first supporting lug is connected to the upper surface of the fixed spraying rod, a second supporting lug is connected to the reinforcing square barrel, and the two ends of a hydraulic cylinder are hinged between the first supporting lug and the second supporting lug. Through cooperation of the first U-shaped plate and the second U-shaped plate, the strength of the hinged position of the fixed spraying rod and the rotating spraying rod is enhanced, shaking of the rotating spraying rod in the front-back direction is limited, the strength of the acting point of the hydraulic cylinder is enhanced through the reinforcing square barrel, distortion and breakage of the folded stress position are avoided, and the service life of the spraying rod is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of boom sprayers, specifically to a boom sprayer rotary joint. Background Technology

[0002] A boom sprayer is a motorized sprayer with nozzles mounted on horizontal or vertical booms. It is widely used for field crops, lawns, nurseries, walled vineyards, and specific applications such as airport and road snow removal, and roadside weeding. It efficiently and evenly sprays liquid pesticides, fertilizers, and plant growth regulators, resulting in high operational efficiency, good spray quality, and uniform liquid distribution. With the adjustment of agricultural planting structures, the increase in scale, and the rapid growth in the market share of large and medium-sized tractors, boom sprayer technology is playing an increasingly important role.

[0003] Existing rotary joints are simply hinged connections. While this structure can enable the spray bar to rotate, it suffers from insufficient stability, poor load-bearing capacity, and susceptibility to breakage. Utility Model Content

[0004] In order to solve the technical problems of existing rotary joints which are simply hinged, although such structures can achieve the rotation of the spray boom, they have insufficient stability, poor load-bearing capacity and are prone to breakage, this utility model provides a rotary joint for a spray boom sprayer.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a boom sprayer rotary joint, comprising: a fixed boom, the fixed boom being fixed to a work vehicle, a U-shaped plate 1 connected to the end of the fixed boom, a U-shaped plate 2 fastened to the outside of the U-shaped plate 1, the upper parts of the U-shaped plate 1 and the U-shaped plate 2 being hinged together, the U-shaped plate 2 being connected to the rotating boom through a reinforcing square tube, a lug 1 connected to the upper surface of the fixed boom, a lug 2 connected to the reinforcing square tube, and two ends of a hydraulic cylinder hinged between the lug 1 and the lug 2.

[0006] Preferably, both ends of the fixed spray bar are connected to U-shaped plates. The width of the U-shaped plates is greater than the width of the fixed spray bar. Two adjacent inner walls of the U-shaped plates are connected to the fixed spray bar. The remaining inner wall of the U-shaped plates is connected to the fixed spray bar through a reinforcing rib. A rotating spray bar is connected to the U-shaped plates behind the reinforcing rib. The two rotating spray bars are folded in an X-shaped cross arrangement.

[0007] Preferably, a baffle is connected to the U-shaped plate to enhance the contact between the square tube and the baffle when the tube is in a horizontal state.

[0008] Preferably, the telescopic end of the hydraulic cylinder is hinged to the support lug via a protection mechanism. The protection mechanism includes a hinged rotating lug, which is hinged to the support lug. The hinged rotating lug is connected to a slide rod, which is slidably connected inside a sleeve. The sleeve is connected to the telescopic end of the hydraulic cylinder, and a spring is sleeved on the slide rod, with the spring in a compressed state.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The combination of U-shaped plate one and U-shaped plate two strengthens the joint between the fixed spray bar and the rotating spray bar, limiting the swaying of the rotating spray bar in the front and back directions. The reinforced square tube strengthens the hydraulic cylinder's point of action, preventing twisting and breakage at the folding stress point, thus greatly improving the service life of the spray bar.

[0011] When the rotating spray bar encounters an obstacle below, the rotating spray bar can retract through the protection mechanism to rotate the spray bar upwards to avoid the obstacle, thus avoiding the bending of the spray bar caused by the rigid connection of existing technology. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is an exploded view of the structure of this utility model.

[0014] In the diagram: 1. Fixed spray bar; 2. U-shaped plate 1; 3. U-shaped plate 2; 4. Reinforcing square tube; 5. Rotating spray bar; 6. Support ear 1; 7. Support ear 2; 8. Hydraulic cylinder; 9. Protection mechanism; 91. Hinged rotating ear; 92. Slide bar; 93. Sleeve; 94. Spring; 10. Reinforcing rib; 11. Baffle. Detailed Implementation

[0015] 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.

[0016] The rotary connection described in this device refers to the axial fixation of the bearing by mounting the bearing on the shaft, with a spring retaining ring groove provided on the shaft or shaft hole, and the rotation achieved by locking the elastic retaining ring in the retaining ring groove; the hinge connection refers to the connection method that allows movement through connecting parts such as hinges, pins, and short shafts.

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] The following is in conjunction with the appendix Figure 1-2This embodiment describes a rotating joint for a boom sprayer, comprising: a fixed boom 1, which is fixed to a work vehicle; a U-shaped plate 2 connected to the end of the fixed boom 1; a U-shaped plate 3 fastened to the outside of the U-shaped plate 2; the upper parts of the U-shaped plate 1 and the U-shaped plate 2 are hinged together; the U-shaped plate 2 is connected to the rotating boom 5 via a reinforcing square tube 4; a support lug 6 is connected to the upper surface of the fixed boom 1; a support lug 7 is connected to the reinforcing square tube 4; and the two ends of a hydraulic cylinder 8 are hinged between the support lug 1 and the support lug 2.

[0019] When the rotating spray bar 5 is in working condition, the U-shaped plate 2 3 is completely fastened to the outside of the U-shaped plate 1 2, which strengthens the joint between the fixed spray bar 1 and the rotating spray bar 5 and limits the swaying of the rotating spray bar 5 in the front and back directions. When folding, the hydraulic cylinder 8 is controlled to retract. The hydraulic cylinder 8 drives the rotating spray bar 5 to fold through the reinforcing square tube 4 and the second support lug 7. The reinforcing square tube 4 strengthens the strength of the action point of the hydraulic cylinder 8, avoiding twisting and breakage at the folding stress point, and greatly improving the service life of the spray bar.

[0020] Both ends of the fixed spray bar 1 are connected to U-shaped plates 2. The width of U-shaped plates 2 is greater than the width of the fixed spray bar 1. Two adjacent inner walls of U-shaped plates 2 are connected to the fixed spray bar 1. The remaining inner wall of U-shaped plates 2 is connected to the fixed spray bar 1 through reinforcing ribs 10. Rotating spray bars 5 are connected to the U-shaped plates 2 behind the reinforcing ribs 10. The two rotating spray bars 5 are arranged in an X-shaped cross configuration when folded.

[0021] By installing the U-shaped plates 2 at both ends of the fixed spray bar 1 in different positions, the positions of the rotating spray bars 5 on both sides are staggered, and the folded state is an X-shaped cross arrangement, which takes up less space during transportation and makes the structure more stable.

[0022] A baffle 11 is connected to the U-shaped plate 2, and the reinforced square tube 4 is in contact with the baffle 11 when it is in a horizontal state.

[0023] Baffle 11 restricts the corner of reinforced square tube 4 to prevent vibration, collision and wear between U-shaped plate 2 3 and U-shaped plate 1 2.

[0024] The extension end of the hydraulic cylinder 8 is hinged to the second support lug 7 via a protection mechanism 9. The protection mechanism 9 includes a hinged rotating lug 91, which is hinged to the second support lug 7. The hinged rotating lug 91 is connected to a slide rod 92, which is slidably connected inside a sleeve 93. The sleeve 93 is connected to the extension end of the hydraulic cylinder 8. A spring 94 is sleeved on the slide rod 92, and the spring 94 is in a compressed state.

[0025] When the rotating spray bar 5 encounters an obstacle below, the rotating spray bar 5 can drive the slide bar 92 to slide into the sleeve 93 through the reinforcing square tube 4 and the second support lug 7, and the rotating spray bar 5 rotates upward to avoid the obstacle. Then, under the action of gravity and spring 94, it resets, avoiding the bending of the spray bar caused by the rigid connection of the existing technology.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0028] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary joint for a boom sprayer, comprising: Fixed spray bar (1), fixed spray bar (1) is fixed on the working vehicle, The feature is that: a U-shaped plate (2) is connected to the end of the fixed spray bar (1), a U-shaped plate (3) is fastened to the outside of the U-shaped plate (2), the upper part of the U-shaped plate (2) and the U-shaped plate (3) are hinged together, the U-shaped plate (3) is connected to the rotating spray bar (5) through the reinforcing square tube (4), a support ear (6) is connected to the upper surface of the fixed spray bar (1), a support ear (7) is connected to the reinforcing square tube (4), and the two ends of the hydraulic cylinder (8) are hinged between the support ear (6) and the support ear (7).

2. The rotary joint of a boom sprayer according to claim 1, characterized in that: Both ends of the fixed spray bar (1) are connected to a U-shaped plate (2). The width of the U-shaped plate (2) is greater than the width of the fixed spray bar (1). The two adjacent inner walls of the U-shaped plate (2) are connected to the fixed spray bar (1). The remaining inner wall of the U-shaped plate (2) is connected to the fixed spray bar (1) through a reinforcing rib (10). A rotating spray bar (5) is connected to the U-shaped plate (2) behind the reinforcing rib (10). The two rotating spray bars (5) are folded in an X-shaped cross arrangement.

3. The rotary joint of a boom sprayer according to claim 1, characterized in that: A baffle (11) is connected to the shaped plate (2) to strengthen the contact between the square tube (4) and the baffle (11) when the tube is in a horizontal state.

4. The rotary joint of a boom sprayer according to claim 1, characterized in that: The extension end of the hydraulic cylinder (8) is hinged to the second support lug (7) through the protection mechanism (9). The protection mechanism (9) includes a hinged rotating lug (91), which is hinged to the second support lug (7). The hinged rotating lug (91) is connected to the slide rod (92), which is slidably connected to the sleeve (93). The sleeve (93) is connected to the extension end of the hydraulic cylinder (8). The slide rod (92) is sleeved with a spring (94), which is in a compressed state.

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