Rotary joint, spray head connecting structure and working vehicle

Abstract

The utility model relates to the technical field of operating vehicles, and discloses a rotary joint, a spray head connecting structure and an operating vehicle, the rotary joint comprises a first pipe body and a second pipe body, and the first pipe body and the second pipe body are rotatably connected in a sleeved mode. A plurality of teeth are arranged on the pipe wall of one of the first pipe body and the second pipe body in the circumferential direction in a surrounding mode, a clamping part is arranged on the pipe wall of the other pipe body, the clamping part is suitable for being switched between a clamping state and an unclamping state, in the clamping state, the clamping part is clamped between every two adjacent teeth, and in the unclamping state, the clamping part is clamped between every two adjacent teeth. And the clamping part is separated from the space between the two adjacent teeth. Adjustment of the rotary joint can be completed only by moving the clamping part to be switched between the clamping state and the unclamping state, and more time and labor are saved compared with bolt screwing.

Description

Technical Field

[0001] The utility model relates to the technical field of working vehicles, in particular to a rotary joint, a spray head connection structure and a working vehicle. Background Art

[0002] Operational vehicles such as sanitation vehicles, sprinkler trucks and dust removal vehicles are special vehicles used for urban appearance tidying and cleaning. Most of them are integrated with nozzle-related structures, and use the nozzle to spray water on the designated area to achieve the effect of cleaning. In order to facilitate the adjustment of the angle of the nozzle, the nozzle is often connected to the water inlet pipeline through the nozzle connection structure. The nozzle connection structure includes a connecting pipe with 90 degrees at both ends, and the two ends of the connecting pipe are connected to the water inlet pipeline and the nozzle through a rotating joint. At this time, adjusting the rotating joints at both ends of the connecting pipe can make the nozzle adjust its angle in the horizontal direction or vertical direction respectively, so as to realize the adjustment of the nozzle in space.

[0003] The existing rotary joint includes two pipelines that can rotate relative to each other. The two pipelines are detachably fixed and connected by bolts to limit relative rotation. The two pipelines of the first rotary joint are respectively connected to the first end of the connecting pipe and the water inlet pipeline. The two pipelines of the second rotary joint are respectively connected to the second end of the connecting pipe and the nozzle. Adjusting the first rotary joint can adjust the angle of the nozzle in the vertical direction, and adjusting the second rotary joint can adjust the angle of the nozzle in the horizontal direction. When adjustment is needed, the bolts used to fix the two pipelines of the rotary joint are removed, and the two pipelines can rotate relative to each other to adjust the angle. After the adjustment is completed, the bolts used to fix the two pipelines of the rotary joint need to be reinstalled so that the two pipelines cannot rotate relative to each other and are fixed. The operation is time-consuming and labor-intensive. Utility Model Content

[0004] In view of this, the utility model provides a rotary joint, a nozzle connection structure and an operating vehicle to solve the problem that the rotary joint of the nozzle connection structure of the existing operating vehicle needs to be disassembled and installed with bolts when adjusting, resulting in time-consuming and laborious operation.

[0005] In the first aspect, the utility model provides a rotary joint, comprising: a first tube body and a second tube body, wherein the first tube body and the second tube body are rotatably connected to each other, a plurality of teeth are circumferentially arranged on the tube wall of one of the first tube body and the second tube body, and a clamping portion is arranged on the tube wall of the other tube body, wherein the clamping portion is suitable for switching between a clamping state and a disengaged state, wherein in the clamping state, the clamping portion is clamped between two adjacent teeth, and in the disengaged state, the clamping portion leaves between two adjacent teeth.

[0006] Beneficial effect: The first tube body and the second tube body are connected to the water outlet pipe and the water inlet pipe respectively. When the angle of the water outlet pipe needs to be adjusted by adjusting the rotary joint, the movable clamping part leaves the clamping space between two adjacent teeth and switches to the unlocked state, at which time the first tube body can rotate relative to the second tube body. After the first tube body is rotated and adjusted to a suitable angle, the movable clamping part is clamped into the clamping space between the other two adjacent teeth and switches to the clamped state, at which time the first tube body cannot rotate relative to the second tube body, so that the first tube body and the second tube body are relatively fixed, completing the angle adjustment of the rotary joint. The adjustment of the rotary joint can be completed by only moving the clamping part to switch between the clamped state and the unlocked state, which is more time-saving and labor-saving than screwing the bolts.

[0007] In an optional implementation, it also includes:

[0008] An outer shell, one of the first tube body and the second tube body is connected to the outer shell, the other is rotatably connected to the outer shell, and the clamping portion is movably connected to the outer shell.

[0009] Beneficial effect: The outer shell protects the first tube body and the second tube body.

[0010] In an optional embodiment, a slide groove is provided on the outer shell, and the engaging portion is slidably connected in the slide groove, so that the engaging portion can switch between the engaging state and the releasing state.

[0011] Beneficial effect: When adjusting the rotary joint, it is only necessary to slide the clamping part in the slide groove to realize rotation or fixation, which saves time and effort.

[0012] In an optional embodiment, a slot is provided on the side wall of the slide slot, and a latch is connected to the latching portion. In the unlocked state, the latch is suitable for being inserted into the slot.

[0013] Beneficial effect: when the first tube body is rotated, there is no need to manually keep the clamping part in the unlocked state, which prevents the clamping part from switching to the engaged state when the first tube body is rotated, thereby avoiding damage to the teeth or the clamping part.

[0014] In an optional embodiment, the rotary joint further includes an elastic member, which acts on the clamping portion. When the clamping portion is in the unlocked state, the elastic member is elastically deformed so that the clamping portion tends to switch to the clamping state.

[0015] Beneficial effect: The engaging portion does not need to apply force when switching from the unlocked state to the engaged state, and the operation is more convenient and labor-saving.

[0016] In an optional embodiment, a hinge seat is provided on the outer shell, and the clamping portion is rotatably connected to the hinge seat, so that the clamping portion can switch between the clamping state and the unlocking state.

[0017] Beneficial effect: When adjusting the rotary joint, it is only necessary to rotate the clamping part to achieve rotation or fixation, which saves time and effort.

[0018] In an optional embodiment, two clamping parts are provided, and ends of the two clamping parts away from the hinge seat are respectively located on two sides of the hinge seat.

[0019] Beneficial effect: When adjusting the angle, one clamping part can be adjusted separately to perform unidirectional rotation adjustment on the first tube body, or two clamping parts can be adjusted at the same time to perform bidirectional rotation adjustment on the first tube body, which is more convenient to operate.

[0020] In a second aspect, the utility model further provides a nozzle connection structure, which is suitable for connecting the nozzle to a water inlet pipe, and the nozzle connection structure includes any of the above-mentioned rotary joints.

[0021] Beneficial effect: Because the nozzle connection structure includes a rotary joint device, it has the same effect as the rotary joint and will not be described in detail here.

[0022] In an optional embodiment, it further includes: a connecting pipe, one end of which is connected to the water inlet pipeline through the rotating joint, and the other end of which is connected to the nozzle through another rotating joint.

[0023] Beneficial effect: In the scenario where the nozzle connection structure adjusts the nozzle angle, since the nozzle connection structure includes a rotary joint device, it has the same effect as a rotary joint.

[0024] In a third aspect, the utility model further provides a work vehicle, comprising any one of the rotary joints or nozzle connection structures described.

[0025] Beneficial effect: Because the work vehicle includes a rotary joint or a nozzle connection structure, it has the same effect as the rotary joint or the nozzle connection structure, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1It is a cutaway schematic diagram of a rotary joint according to an embodiment of the utility model;

[0028] Figure 2 This is an axonometric view of a rotary joint according to an embodiment of the utility model;

[0029] Figure 3 This is a schematic diagram of the outer shell structure of an embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the first tube structure of an embodiment of the utility model;

[0031] Figure 5 This is a structural schematic diagram of another rotary joint according to an embodiment of the utility model;

[0032] Figure 6 This is an axonometric view of another rotary joint according to an embodiment of the present utility model;

[0033] Figure 7 A schematic cross-sectional view of another rotary joint according to an embodiment of the utility model;

[0034] Figure 8 It is a schematic diagram of the nozzle connection structure of an embodiment of the utility model.

[0035] Description of reference numerals:

[0036] 1. First tube body; 2. Second tube body; 3. Clamping part; 4. Outer shell; 5. Clamping pin; 6. Slide groove; 7. Clamping groove; 8. Installation cavity; 9. Rotation cavity; 10. Ring; 11. Wear-resistant self-lubricating gasket; 12. Elastic member; 13. Teeth; 14. Connecting tube. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0038] Combine the following Figures 1 to 8 , describing an embodiment of the utility model.

[0039] According to an embodiment of the utility model, on the one hand, a rotary joint is provided, comprising a first tube body 1 and a second tube body 2, wherein a portion of the first tube body 1 is inserted into the second tube body 2, thereby sleeved with the first tube body 1 and the second tube body 2, so that the first tube body 1 and the second tube body 2 can rotate relative to each other. A plurality of teeth 13 are arranged on the tube wall of the first tube body 1, and the plurality of teeth 13 are arranged along the circumference of the first tube body 1, so that a clamping space is formed between two adjacent teeth 13. A clamping portion 3 is arranged on the hanging wall of the second tube body 2, wherein the clamping portion 3 is movably connected to the second tube body 2 and can switch between a clamping state and a release state.

[0040] When the clamping portion 3 moves and clamps into the clamping space between two adjacent teeth 13, the clamping portion 3 is in a clamping state, at which time the clamping portion 3 blocks the teeth 13 on both sides thereof and restricts the first tube 1 from rotating relative to the second tube 2. When the clamping portion 3 moves and leaves the clamping space between two adjacent teeth 13, the clamping portion 3 is in an unlocking state, at which time the clamping portion 3 no longer blocks the teeth 13 and contacts the restriction, and the first tube 1 can rotate relative to the second tube 2.

[0041] When the rotary joint is used, the first tube body 1 and the second tube body 2 are connected to the water outlet pipe and the water inlet pipe respectively. When the rotary joint needs to be adjusted to adjust the angle of the water outlet pipe, the movable clamping part 3 leaves the clamping space between two adjacent teeth 13 and switches to the unlocked state, at which time the first tube body 1 can rotate relative to the second tube body 2. After the first tube body 1 is rotated and adjusted to a suitable angle, the movable clamping part 3 is clamped into the clamping space between the other two adjacent teeth 13 and switched to the clamped state, at which time the first tube body 1 cannot rotate relative to the second tube body 2, so that the first tube body 1 and the second tube body are relatively fixed, completing the angle adjustment of the rotary joint. With such a configuration, the rotary joint can be adjusted by only switching the movable clamping part 3 between the clamped state and the unlocked state, which is more time-saving and labor-saving than screwing the bolts.

[0042] It is worth noting that the teeth 13 can also be arranged on the wall of the second tube body 2, and correspondingly, the clamping portion 3 is arranged on the wall of the first tube body 1. In this case, when adjusting the rotary joint, the first tube body 1 is relatively fixed, while the second tube body 2 rotates. For the sleeve connection between the first tube body 1 and the second tube body 2, the second tube body 2 can also be partially inserted into the first tube body 1.

[0043] In some embodiments, an O-ring 10 installation groove is opened on the outer wall of the first tube body 1, and the O-ring 10 is installed in the O-ring 10 installation groove. In this way, after the first tube body 1 is inserted into the second tube body 2, the O-ring 10 is respectively pressed against the outer wall of the first tube body 1 and the inner wall of the second tube body 2, thereby achieving sealing of the outer wall of the first tube body 1 and the inner wall of the second tube body 2.

[0044] The O-ring 10 mounting groove can also be provided on the inner wall of the second tube body 2. In the case where the second tube body 2 is inserted into the first tube body 1, the O-ring 10 mounting groove can be provided on the outer wall of the second tube body 2 or on the inner wall of the first tube body 1.

[0045] As an optional embodiment, it also includes an outer shell 4, in which a mounting cavity 8 and a rotating cavity 9 arranged on the side wall of the mounting cavity 8 are arranged. After the first tube body 1 is rotatably inserted into the second tube body 2, the second tube body 2 is fixedly connected to the mounting cavity 8 in the outer shell 4, so that the first tube body 1 is rotatably connected to the mounting cavity 8 in the outer shell 4. At this time, the teeth 13 on the tube wall of the first tube body 1 are located in the mounting cavity 8. When the first tube body 1 rotates, the teeth 13 on the tube wall of the first tube body 1 rotate in the mounting cavity 8. The clamping part 3 is movably connected to the outer shell 4, and a through groove connected to the rotating cavity 9 is opened on the outer shell 4. When the clamping part 3 moves, it can pass through the through groove on the outer shell 4 to enter the rotating cavity 9 and clamp between two adjacent teeth 13, thereby switching to a clamping state. In this way, the outer shell 4 protects the first tube body 1 and the second tube body 2.

[0046] In some embodiments, a wear-resistant self-lubricating gasket 11 is provided on the side wall of the rotating cavity 9, and the wear-resistant self-lubricating gasket 11 contacts the side of the tooth 13. This ensures that the tooth 13 can rotate in the rotating cavity 9 of the outer shell 4, and reduces the wear between the side wall of the tooth 13 and the side wall of the rotating cavity 9.

[0047] In some embodiments, the outer shell 4 includes a first half shell and a second half shell, the first half shell is provided with a first half installation cavity and a first half rotation cavity, and the second half shell is provided with a second half installation cavity and a second half rotation cavity. After the first tube body 1 is rotatably inserted into the second tube body 2, the second tube body 2 is fixedly placed in the first half installation cavity, and then the first half shell and the second half shell are buckled and fastened. At this time, the first half shell and the second half shell are assembled into the outer shell 4, the first half installation cavity and the second half installation cavity are assembled to form an installation cavity 8 and the second tube body 2 is clamped and fixed, and the first half rotation cavity and the second half rotation cavity are assembled to form a rotation cavity 9 and accommodate the teeth 13 on the tube wall of the first tube body 1. With such an arrangement, installation is more convenient.

[0048] A fixing platform may be provided on both the first half shell and the second half shell, and the fixing platforms on the first half shell and the second half shell are fixed and locked using bolts to ensure that the first half shell and the second half shell are pressed and spliced ​​together.

[0049] As an optional embodiment, a slide groove 6 is provided on the outer shell 4, so that the slide groove 6 is connected to the through groove on the outer shell 4 that is connected to the rotating chamber 9. The clamping part 3 is cylindrical, and the cylindrical clamping part 3 is installed in the slide groove 6, so that the clamping part 3 can be slidably connected in the slide groove 6. When the clamping part 3 slides close to the teeth 13 in the slide groove 6, the clamping part 3 passes through the through groove into the rotating chamber 9 and is clamped between two adjacent teeth 13, and at this time, the clamping part 3 cavity switches to a clamping state. When the clamping part 3 slides away from the teeth 13 in the slide groove 6, the clamping part 3 leaves between two adjacent teeth 13, and at this time, the clamping part 3 cavity switches to a released state. With such a configuration, when adjusting the rotary joint, it is only necessary to slide the clamping part 3 in the slide groove 6 to achieve rotation or fixation, and the operation is more time-saving and labor-saving.

[0050] In some embodiments, a slot 7 is provided on the side wall of the slide groove 6. A latch 5 is integrally provided on the side wall of the clamping portion 3. When the clamping portion 3 is switched to the unlocked state, the clamping portion 3 slides along the slide groove 6 and leaves between two adjacent teeth 13. At this time, the clamping portion 3 can be rotated so that the latch 5 on the side wall of the clamping portion 3 is inserted into the slot, thereby limiting the sliding of the clamping portion 3 near the teeth 13 in the slide groove 6, that is, limiting the switching of the clamping portion 3 to the engaged state.

[0051] In actual use, after the clamping part 3 is switched to the unlocked state, the latch 5 is inserted into the clamping slot 7. At this time, the clamping part 3 cannot be switched to the locked state, and the first tube body 1 can be rotated at will. After rotating to a suitable angle, the latch 5 is removed from the clamping slot 7. At this time, the clamping part 3 can slide in the slide groove 6. The clamping part 3 can be switched to the locked state by inserting the clamping part 3 between two adjacent teeth 13 that are opposite to each other. When the first tube body 1 is rotated, there is no need to manually keep the clamping part 3 in the unlocked state, so as to prevent the clamping part 3 from switching to the locked state when the first tube body 1 is rotated, and to avoid damage to the teeth 13 or the clamping part 3.

[0052] In some other embodiments, the rotary joint further includes an elastic member 12, which may be a spring. The spring is installed in the slide groove 6 so that the first end of the spring is connected to the inner wall of the slide groove 6. After the clamping portion 3 is placed in the slide groove 6, the clamping portion 3 is connected to the second end of the spring so that the spring acts on the clamping portion 3. The spring is located on the side of the clamping portion 3 away from the teeth 13. When the clamping portion 3 is switched from the clamping state to the unclamping state, the spring is compressed and elastically deformed. At this time, under the rebound effect of the spring, the clamping portion 3 has a tendency to slide close to the teeth 13, that is, the clamping portion 3 has a tendency to switch to the clamping state.

[0053] In actual use, after the engaging portion 3 is switched from the engaging state to the disengaging state, the spring is compressed. At this time, the first tube body 1 can be rotated arbitrarily. After rotating to a suitable angle, the engaging portion 3 is released. Under the rebound action of the spring, the engaging portion 3 is pushed to slide close to the teeth 13 and inserted between two adjacent teeth 13, completing the switching to the engaging state. No force is required during the switching, and the operation is more convenient and labor-saving.

[0054] As an optional embodiment, a hinge seat is provided on the outer shell 4, and the first end of the clamping part 3 is rotatably connected to the hinge seat, so that the clamping part 3 is tilted to one side and can rotate around the hinge point. During the rotation process, when the second end of the clamping part 3 rotates and is clamped between two adjacent teeth 13, the clamping part 3 is in a clamping state, and at this time, the clamping part 3 restricts the first tube 1 from rotating in the direction of the second end of the clamping part 3 pointing to the hinge point. When the second end of the clamping part 3 rotates and leaves between two adjacent teeth 13, the clamping part 3 is in an unlocked state, and at this time, the first tube 1 can rotate in the direction of the second end of the clamping part 3 pointing to the hinge point.

[0055] With such arrangement, when adjusting the rotary joint, it is only necessary to rotate the clamping portion 3 to achieve rotation or fixation, which saves time and effort.

[0056] In some embodiments, two clamping parts 3 are provided, and the first ends of the two clamping parts 3 are both rotatably connected to the hinge seat, so that the first clamping part 3 tilts to one side and can rotate around the hinge point, and the second clamping part 3 tilts to the other side and can rotate around the hinge point. During the rotation process, when the second end of the clamping part 3 rotates and is clamped between two adjacent teeth 13, the clamping part 3 is in a clamping state, and at this time, the clamping part 3 restricts the first tube body 1 from rotating in the direction of the second end of the clamping part 3 pointing to the hinge point. When the second end of the clamping part 3 rotates and leaves between two adjacent teeth 13, the clamping part 3 is in an unlocked state, and at this time, the first tube body 1 can rotate in the direction of the second end of the clamping part 3 pointing to the hinge point.

[0057] Since the two clamping parts 3 are inclined to opposite sides respectively, when the two clamping parts 3 are in the clamping state, the two clamping parts 3 respectively restrict the rotation and reverse rotation of the first tube body 1. In this way, when adjusting the angle, one clamping part 3 can be adjusted separately to perform unidirectional rotation adjustment on the first tube body 1, or both clamping parts 3 can be adjusted at the same time to perform bidirectional rotation adjustment on the first tube body 1, which is more convenient to operate.

[0058] According to an embodiment of the utility model, on the other hand, a nozzle connection structure is also provided, which is used to connect the nozzle to the water inlet pipeline, wherein the nozzle connection structure includes the above-mentioned rotary joint.

[0059] In some embodiments, the nozzle connection structure further includes: a connecting pipe 14, wherein the two ends of the connecting pipe 14 are respectively connected to a rotating joint, the second pipe body 2 of the first rotating joint is connected to the water inlet pipeline through a valve, the first pipe body 1 of the first rotating joint is connected to the first end of the connecting pipe 14, the second pipe body 2 of the second rotating joint is connected to the second end of the connecting pipe, and the first pipe body 1 of the second rotating joint is connected to the nozzle. The connecting pipe is arc-shaped, and the water flow direction at both ends of the connecting pipe is 90°.

[0060] With this arrangement, after the valve is opened, water flows from the water inlet pipe through the valve, the first rotary joint, the connecting pipe 14 and the second rotary joint in sequence into the nozzle and is sprayed out. When the nozzle angle needs to be adjusted, the nozzle angle can be adjusted in the vertical direction by adjusting the first rotary joint, and the nozzle angle can be adjusted in the horizontal direction by adjusting the second rotary joint. Since the rotary joint is the rotary joint described above, it is more time-saving and labor-saving when adjusting the nozzle angle using the nozzle connection structure.

[0061] According to an embodiment of the present invention, on the other hand, a working vehicle is provided, comprising the above-mentioned rotary joint or nozzle connection structure. The working vehicle includes but is not limited to a sanitation vehicle, a watering vehicle, and a dust removal vehicle.

[0062] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A rotary joint, characterized in that: include: A first tube body (1) and a second tube body (2), wherein the first tube body (1) and the second tube body (2) are rotatably connected to each other, a plurality of teeth (13) are circumferentially arranged on the tube wall of one of the first tube body (1) and the second tube body (2), and a clamping portion (3) is arranged on the tube wall of the other, wherein the clamping portion is suitable for switching between a clamping state and a disengaging state, wherein in the clamping state, the clamping portion (3) is clamped between two adjacent teeth (13), and in the disengaging state, the clamping portion (3) is away from between two adjacent teeth (13).

2. The rotary joint according to claim 1, characterized in that: Also includes: An outer shell (4), wherein one of the first tube body (1) and the second tube body (2) is connected inside the outer shell (4), and the other is rotatably connected inside the outer shell (4), and the clamping portion (3) is movably connected to the outer shell (4).

3. The rotary joint according to claim 2, characterized in that: The outer shell (4) is provided with a slide groove (6), and the clamping portion (3) is slidably connected in the slide groove (6) so that the clamping portion (3) can be switched between the clamping state and the unlocking state.

4. The rotary joint according to claim 3, characterized in that: A clamping groove (7) is provided on the side wall of the slide groove (6), and a clamping pin (5) is connected to the clamping portion (3). In the unlocked state, the clamping pin is suitable for being inserted into the clamping groove (7).

5. The rotary joint according to claim 3, characterized in that: The rotary joint further comprises an elastic member (12), wherein the elastic member (12) acts on the clamping portion (3), and when the clamping portion (3) is in the unlocked state, the elastic member (12) generates elastic deformation, so that the clamping portion (3) has a tendency to switch to the clamping state.

6. The rotary joint according to claim 2, characterized in that: The outer shell (4) is provided with an articulated seat, and the clamping portion (3) is rotatably connected to the articulated seat so that the clamping portion (3) can be switched between the clamping state and the unlocking state.

7. The rotary joint according to claim 6, characterized in that: Two clamping parts (3) are provided, and the ends of the two clamping parts (3) away from the hinge seat are respectively located on two sides of the hinge seat.

8. A nozzle connection structure, characterized in that: Suitable for connecting the nozzle to the water inlet pipeline, the nozzle connection structure includes the rotary joint according to any one of claims 1-7.

9. The nozzle connection structure according to claim 8, characterized in that: Also includes: A connecting pipe (14) has one end connected to the water inlet pipeline through the rotating joint, and the other end connected to the spray head through another rotating joint.

10. A working vehicle, characterized in that: include: The rotary joint according to any one of claims 1 to 7 or the nozzle connection structure according to any one of claims 8 to 9.

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