Boom systems and work vehicles

Abstract

The present invention proposes a boom system and a working vehicle. The boom system includes: one arm; two arms, the two arms are at least partially sleeved in the one arm; a driving device, which is partially arranged in the two arms, and the driving device is respectively connected to the one arm and the second arm, and the two arms are extended and retracted relative to the one arm through the driving device; a telescopic water pipe, which is at least partially arranged in the two arms, wherein the telescopic water pipe is extended or shortened along with the two arms. Through the technical solution of the present invention, components such as cables and telescopic water pipes are effectively built into the boom system, reducing the space occupied by the outside of the boom system, reducing the possibility of cables, water pipes and other components being scratched and entangled, improving the convenience of using the boom system, and also helping to reduce the sagging of components such as cables, drag chains, and water pipes due to gravity.

Description

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 27, 2020, with application number 2020108774646, and invention name “Boom system and work vehicle”; claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 27, 2020, with application number 2020218217610, and invention name “Boom system and work vehicle”; all contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of mechanical equipment, and in particular to a boom system and a working vehicle. Background Art

[0003] At present, due to the limited space size and small cross-sectional size of the fire truck arm, it is impossible to realize the internalization of the water channel arm. In order to realize the functions of fire extinguishing and maintenance, the water channel can only be fixed on the outside of the arm, which occupies external space and is easily damaged by scratches.

[0004] In addition, some related technologies have built-in pipelines, using two sets of drag chains to respectively embed the hydraulic pipelines and cable lines, which takes up a large space, and when the boom is extended, the drag chains are easily suspended and sink, and are prone to scratching the boom. Summary of the invention

[0005] The embodiments according to the present invention are intended to improve at least one of the technical problems existing in the prior art or related art.

[0006] In view of this, an object according to an embodiment of the present invention is to provide a boom system.

[0007] Another object of an embodiment of the present invention is to provide a working vehicle.

[0008] In order to achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention provides a boom system, comprising: an arm; two arms, the two arms are at least partially arranged in the one arm; a driving device, which is partially arranged in the two arms, and the driving device is respectively connected to the one arm and the second arm, and the two arms are extended and retracted relative to the one arm through the driving device; and a telescopic water pipe, which is at least partially arranged in the two arms, wherein the telescopic water pipe is extended or shortened along with the two arms.

[0009] In this technical solution, the telescopic water pipe is at least partially arranged inside the two arms, that is, the telescopic water pipe is arranged inside the arm frame system, or the telescopic water pipe is built-in, so as to reduce the space occupied outside the arm frame, and also reduce the damage caused by the telescopic water pipe being scratched on the outside of the arm frame. In addition, the built-in telescopic water pipe also makes the overall structure of the arm frame system more compact and regular, which is convenient for storage and use.

[0010] Specifically, the two arms are at least partially sleeved in one arm, which is convenient for the arm system to extend or shorten; by setting a driving device, the driving device is connected to the first arm and the second arm respectively, and the driving device can drive the first arm and the second arm to extend and retract, thereby achieving the purpose of extending and shortening the arm system. The driving device is partially arranged in the two arms, that is, the driving device is built-in, which is conducive to reducing the occupation of the outer space of the arm system, and is also conducive to reducing the interference of the driving device by external objects, dust, high temperature and other factors, and improving the stability and reliability of the driving device. The telescopic water pipe is at least partially arranged in the two arms, which can achieve the purpose of the built-in water pipe. The telescopic water pipe is extended or shortened with the two arms, so that the two arms can also form a certain support for the telescopic water pipe, reduce the situation where the telescopic water pipe produces a large deflection under the action of gravity, and is conducive to improving the concentricity of the telescopic water pipe.

[0011] In the above technical solution, the telescopic water pipe is connected to the driving device, the telescopic water pipe includes a first end and a second end, and the diameter of the first end is larger than the diameter of the second end; the driving device is a telescopic oil cylinder, the telescopic oil cylinder includes a cylinder barrel and a cylinder rod, and the cylinder rod is telescopically arranged in the cylinder barrel; the arm system also includes: a connecting seat, the first end is connected to the cylinder barrel through the connecting seat; and a connecting frame, the second end is connected to the cylinder rod through the connecting frame.

[0012] In this technical solution, the first end of the telescopic water pipe is connected to the cylinder barrel through a connecting seat, and the second end is connected to the cylinder rod through a connecting frame, so that when the telescopic oil cylinder is extended and retracted, the first end can be driven to move through the relative movement between the cylinder barrel and the cylinder rod, that is, the telescopic water pipe is extended and retracted. The setting of the connecting seat can not only connect the telescopic water pipe and the cylinder barrel together, but also provide certain support for the telescopic water pipe, especially when multiple connecting seats are set, which is conducive to reducing the deflection of the telescopic water pipe. The diameter of the first end is larger than that of the second end, that is, the diameters of the two ends of the telescopic water pipe are different, which is convenient for connecting water pipes of different diameters according to user needs.

[0013] It is understandable that the driving device is not limited to the telescopic cylinder, but can also be any one of a pneumatic cylinder, an electric cylinder, and an electric push rod, or the driving device can be any one of a pulley structure, a sprocket structure, and a gear rack structure.

[0014] In the above technical solution, the connecting seat includes a first bracket and a second bracket, and the first bracket and the second bracket enclose a first accommodating portion and a second accommodating portion. The first accommodating portion is used to accommodate the telescopic water pipe, and the second accommodating portion is used to accommodate the telescopic oil cylinder, and the first bracket and the second bracket are bolted, clamped or riveted.

[0015] In this technical solution, the connecting seat includes a first bracket and a second bracket, that is, the connecting seat is a split structure, which is convenient for assembling the long strip structure such as the telescopic water pipe and the telescopic oil cylinder, and improves the convenience of assembly. Specifically, when installing the telescopic oil cylinder and the telescopic water pipe, the first bracket and the second bracket can be separated first, and only one bracket can be assembled. After the telescopic oil cylinder and the telescopic water pipe are installed in place, the other bracket can be buckled and locked with fasteners to complete the assembly, which improves the convenience and flexibility of installation. In addition, two accommodating parts are arranged on the connecting seat, and the telescopic oil cylinder and the telescopic water pipe are respectively accommodated by the two accommodating parts, which is convenient for the connecting seat and the telescopic oil cylinder to form a certain support for the telescopic water pipe, and the telescopic water pipe and the telescopic oil cylinder can be installed as a whole into the two arms, which is conducive to improving the convenience of built-in installation, and can also improve the assembly efficiency, and the overall structure is more compact. The first bracket and the second bracket are bolted, clamped or riveted, which is conducive to improving the convenience of assembly of the connecting seat.

[0016] In any of the above technical solutions, a limiting structure is also provided on the connecting seat, and the limiting structure is used to limit the rotation of the telescopic cylinder.

[0017] In this technical solution, a limit structure is provided to limit the rotation of the telescopic cylinder, which helps to reduce the torque generated on the first arm and the second arm due to the rotation of the telescopic cylinder, thereby improving the working stability and reliability of the first arm and the second arm, and reducing the phenomenon of damage to the first arm and the second arm due to torque.

[0018] In any of the above technical solutions, the boom system also includes: a first water pipe connected to the first end of the telescopic water pipe; a second water pipe connected to the second end of the telescopic water pipe; and a water monitor threaded plate used to connect the water monitor and the first water pipe.

[0019] In this technical solution, by providing the first water pipe and the second water pipe, the water circuit is extended to facilitate connecting the water source and the water monitor respectively, thereby improving the convenience of using the water circuit. By providing the water monitor threaded plate, an intermediate connection structure is provided for connecting the water monitor and the first water pipe, thereby improving the convenience of water circuit connection.

[0020] In the above technical solution, threaded sleeves are respectively provided at the corner positions of the water monitor threaded plate and the corresponding corner positions of the two arms, and the threaded sleeves are used to cooperate with fasteners to connect the water monitor threaded plate and the two arms.

[0021] In this technical solution, the threaded sleeves are arranged at the corners of the water monitor threaded plate and the corners of the two arms, which is convenient for avoiding the telescopic cylinder and the telescopic water pipe and providing convenience for the internal installation of the telescopic cylinder and the telescopic water pipe.

[0022] In any of the above technical solutions, the arm system also includes: a guide rail frame, the guide rail frame is arranged on one side of the circumference of the cylinder, and the guide rail frame is connected to the cylinder; a slider, the slider is at least partially arranged in the guide rail frame and can slide along the guide rail frame; a pull rod groove, connected to the end of the slider away from the guide rail frame, and the pull rod groove is also fixedly connected to the cylinder rod; a connecting piece, connecting pieces are respectively provided at the middle position of the pull rod groove and on the end of the cylinder close to the cylinder rod; a drag chain, one end of the drag chain is connected to the pull rod groove through the connecting piece, and the other end of the drag chain is connected to the cylinder through another connecting piece, the drag chain is used to accommodate cables, and the drag chain is arranged adjacent to the telescopic water pipe and the telescopic oil cylinder.

[0023] In this technical solution, the drag chain, the telescopic water pipe, and the telescopic oil cylinder are all arranged adjacent to each other, that is, the drag chain, the telescopic water pipe, and the telescopic oil cylinder are arranged roughly in a triangle, and the structure is compact, which is convenient for the drag chain, the telescopic oil cylinder, and the telescopic water pipe to be built into the two arms. The drag chain is used to accommodate the cable, and the hydraulic pipeline is eliminated, so the space occupied by the drag chain can be reduced, which is conducive to achieving the purpose of building the drag chain, the telescopic water pipe, the telescopic oil cylinder and other components into the two arms, improving the compactness of the arm frame system, and reducing the space occupied by the entire arm frame system. Through the arrangement of the guide frame, the slider and the pull rod groove, and the guide frame is connected to the cylinder barrel, and the pull rod groove is connected to the cylinder rod, the pull rod groove can slide relative to the guide frame through the slider, thereby driving the extension and shortening of the drag chain connected thereto. The groove of the pull rod groove can also provide a limit and guide function for the drag chain, and the pull rod groove can also play a certain supporting and protective role for the drag chain, preventing the drag chain from sinking under the action of gravity and rubbing against the two arms. By setting the connecting piece, it is convenient to fix the two ends of the drag chain to the cylinder rod and the cylinder barrel respectively, so that the drag chain moves with the extension and contraction of the cylinder barrel and the cylinder rod.

[0024] In the above technical solution, the boom system also includes: a pipeline transmission channel, which is arranged in the two arms, the pipeline transmission channel is arranged adjacent to the drag chain, and the pipeline transmission channel is also arranged along the length direction of the two arms; the pipeline transmission channel is used to accommodate cables.

[0025] In this technical solution, by setting up a pipeline transmission channel, it is convenient to accommodate the cable before the cable enters the drag chain, which can not only support the cable to prevent the cable from sagging due to gravity and affecting the operation of other parts of the boom system, but also protect and guide the cable entry to avoid scratches and entanglement. The pipeline transmission channel is arranged adjacent to the drag chain to facilitate the cable to enter the drag chain from the pipeline transmission channel. The pipeline transmission channel is arranged along the length direction of the two arms, which is convenient for the wiring of the cable and makes the boom system structure more compact.

[0026] In any of the above technical solutions, the cylinder barrel of the telescopic cylinder is connected to the two arms via a first bolt; the cylinder rod of the telescopic cylinder is connected to one arm via a pin shaft or a first bolt.

[0027] In this technical solution, the cylinder barrel of the telescopic cylinder is connected to the two arms through a first bolt, and the cylinder rod of the telescopic cylinder is connected to one arm through a pin shaft or a first bolt. It has a simple structure and is easy to assemble, which is beneficial to improving assembly efficiency and convenience.

[0028] According to an embodiment of the second aspect of the present invention, there is provided a working vehicle, comprising: a vehicle body; a water system, the water system being arranged in the vehicle body; a boom system such as any one of the technical solutions in the first aspect above, being arranged on the vehicle body, and the telescopic water pipe of the boom system being connected to the water system.

[0029] In this technical solution, by adopting the boom system of any one of the technical solutions in the first aspect, all the beneficial effects of any one of the technical solutions in the first aspect are achieved, which will not be described in detail. By providing a vehicle body, it is convenient to accommodate and install the boom system through the vehicle body. By providing a water system, it is convenient to connect with the telescopic water pipe, supply water to the telescopic water pipe, or draw out the water in the telescopic water pipe for use.

[0030] The operating vehicle is any one of a fire truck, a concrete pump truck, and a sprinkler truck.

[0031] Additional aspects and advantages of embodiments according to the present invention will become apparent in the following description or may be learned through practice of embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of the main structure of a boom system according to an embodiment of the present invention;

[0033] Figure 2 is a partial cross-sectional structural schematic diagram of a boom system according to an embodiment of the present invention;

[0034] Figure 3 is a partial cross-sectional structural schematic diagram of a boom system according to another embodiment provided by the present invention;

[0035] Figure 4 yes Figure 3 A side view schematic diagram of the structure;

[0036] Figure 5 is a partial front structural schematic diagram of a boom system according to an embodiment of the present invention;

[0037] Figure 6 yes Figure 5 A side view schematic diagram of the structure;

[0038] Figure 7 is a partial side structural schematic diagram of a boom system according to an embodiment of the present invention;

[0039] Figure 8It is a schematic block diagram of the structure of a working vehicle according to an embodiment of the present invention.

[0040] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names in the figure is:

[0041] 1 arm system, 100 first arm, 102 second arm, 104 driving device, 1040 cylinder, 1042 cylinder rod, 106 telescopic water pipe, 108 first water pipe, 110 second water pipe, 112 connecting seat, 1120 first bracket, 1122 second bracket, 1124 first accommodating portion, 1126 second accommodating portion, 1128 countersunk screw hole, 1129 limiting structure, 114 connecting frame, 116 water monitor threaded plate, 1160 threaded sleeve, 118 guide frame, 120 slider, 122 pull rod groove, 124 connecting piece, 126 drag chain, 128 cable, 130 pipeline transmission channel, 132 first bolt, 134 pin, 2 working vehicle, 20 vehicle body, 22 waterway system. DETAILED DESCRIPTION

[0042] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the features of the embodiments of the present invention can be combined with each other without conflict.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments according to the present invention. However, the embodiments according to the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection provided by the embodiments of the present invention is not limited to the specific embodiments disclosed below.

[0044] Refer to the following Figures 1 to 8 Some embodiments provided according to the present invention are described.

[0045] like Figures 1 to 7 As shown, a boom system 1 according to an embodiment of the first aspect of the present invention comprises: an arm 100, a second arm 102, a driving device 104 and a telescopic water pipe 106. The driving device 104 is partially disposed in the second arm 102.

[0046] Specifically, the two arms 102 are at least partially sleeved in the one arm 100 . The driving device 104 is partially located in the two arms 102 .

[0047] In this embodiment, the driving device 104 is a telescopic cylinder. Figure 5As shown, the telescopic oil cylinder includes a cylinder rod 1042 and a cylinder barrel 1040, and the cylinder rod 1042 is telescopically arranged in the cylinder barrel 1040. The cylinder barrel 1040 of the telescopic oil cylinder is arranged in the second arm 102 and connected to the second arm 102 through the first bolt 132. The cylinder rod 1042 of the telescopic oil cylinder extends out of the second arm 102 and is connected to the first arm 100 through the pin 134. The second arm 102 is telescopic relative to the first arm 100 through the driving device 104, that is, the telescopic oil cylinder. The telescopic water pipe 106 is at least partially arranged in the second arm, wherein the telescopic water pipe 106 is extended or shortened along with the second arm 102.

[0048] In this embodiment, the driving device 104 is partially disposed in the second arm 102, and the second arm 102 is at least partially sleeved in the first arm 100, so that the telescopic oil cylinder, that is, the driving device 104 is integrally built into the boom system 1. The telescopic water pipe 106 is at least partially disposed in the second arm 102, and is telescoped along with the second arm, so that the telescopic water pipe 106 is also correspondingly built into the boom system 1, which reduces the occupation of the external space of the boom system 1 by the telescopic water pipe 106, and can also reduce the phenomenon that the telescopic water pipe 106 is scratched on the outside of the boom and causes damage.

[0049] Furthermore, the telescopic water pipe 106 is built into the second arm 102, which makes the overall structure of the boom system 1 more compact and regular, and is convenient for use and storage.

[0050] Specifically, the two arms 102 are at least partially sleeved in the one arm 100, or the one arm 100 is telescopically sleeved on the two arms 102, so that the boom system 1 can be extended or shortened. By setting a telescopic cylinder, that is, a driving device 104, the cylinder barrel 1040 and the cylinder rod 1042 of the telescopic cylinder are respectively connected to the one arm 100 and the second arm 102, then the telescopic cylinder can be extended and retracted to drive the one arm 100 and the second arm 102, thereby achieving the purpose of extending and shortening the boom system 1. The telescopic cylinder is at least partially arranged in the two arms 102, that is, the telescopic cylinder is built into the boom system 1, which is conducive to reducing the occupation of the outer space of the boom system 1, and is also conducive to reducing the interference of the telescopic cylinder by external objects, dust, high temperature and other factors, and improving the stability and reliability of the telescopic cylinder. The telescopic water pipe 106 is at least partially disposed in the two arms 102 , and the two arms also provide certain support for the telescopic water pipe 106 , thereby reducing the large deflection of the telescopic water pipe 106 under the action of gravity, and is beneficial to improving the concentricity of the telescopic water pipe 106 .

[0051] like Figure 5 and Figure 6As shown, in this embodiment, the cylinder barrel 1040 of the telescopic oil cylinder is connected to the second arm 102 through the first bolt 132, and the cylinder rod 1042 of the telescopic oil cylinder is connected to the first arm 100 through the pin 134. Its structure is simple and easy to assemble, which is conducive to improving assembly efficiency and convenience. It can be understood that the cylinder rod 1042 and the first arm 100 can also be connected by the first bolt 132.

[0052] In other embodiments, the cylinder barrel 1040 of the telescopic cylinder is connected to the first arm 100 , and the cylinder rod 1042 is connected to the second arm 102 .

[0053] In other embodiments, the driving device 104 is a pneumatic cylinder or an electric cylinder.

[0054] In the above embodiment, the telescopic water pipe 106 includes a first end with a larger diameter and a second end with a smaller diameter. The boom system 1 also includes a connecting frame 114 and a connecting seat 112. The telescopic water pipe 106 is connected to the cylinder barrel 1040 through the connecting seat 112, and the first end of the telescopic water pipe 106 is also connected to the cylinder barrel 1040 through the connecting seat 112. The second end of the telescopic water pipe 106 is connected to the cylinder rod 1042 through the connecting frame 114.

[0055] In this embodiment, the first end of the telescopic water pipe 106 is connected to the cylinder barrel 1040 through the connecting seat 112, and the second end is connected to the cylinder rod 1042 through the connecting frame 114, so that when the telescopic oil cylinder is extended and retracted, the first end can be driven to move through the relative movement between the cylinder barrel 1040 and the cylinder rod 1042, that is, the telescopic water pipe 106 is extended and retracted. The setting of the connecting seat 112 can not only connect the telescopic water pipe 106 and the cylinder barrel 1040 together, but also provide certain support for the telescopic water pipe 106, especially when multiple connecting seats 112 are provided, it is helpful to reduce the deflection of the telescopic water pipe 106. The diameter of the first end is larger than that of the second end, that is, the diameters of the two ends of the telescopic water pipe 106 are different, which is convenient for connecting water pipes of different diameters according to user needs.

[0056] like Figure 3 and Figure 4 As shown, in the above embodiment, the connection seat 112 includes a first bracket 1120 and a second bracket 1122, that is, the connection seat 112 is a split structure, which is convenient for assembling the long strip structure such as the telescopic water pipe 106 and the telescopic oil cylinder, and improves the convenience of assembly. When the telescopic oil cylinder and the telescopic water pipe 106 are installed by adopting the split structure, the first bracket 1120 and the second bracket 1122 can be separated first, and only one bracket can be assembled. After the telescopic oil cylinder and the telescopic water pipe 106 are installed in place, the other bracket can be buckled and locked with fasteners to complete the assembly, which improves the convenience and flexibility of installation.

[0057] like Figure 3As shown, specifically, the first bracket 1120 and the second bracket 1122 enclose a first accommodating portion 1124 and a second accommodating portion 1126, the first accommodating portion 1124 is used to accommodate the telescopic water pipe 106, and the second accommodating portion 1126 is used to accommodate the telescopic oil cylinder, that is, the driving device 104. The first bracket 1120 and the second bracket 1122 are bolted together by countersunk bolts, and accordingly, the connecting seat 112 is provided with a countersunk screw hole 1128.

[0058] In other embodiments, the first bracket 1120 and the second bracket 1122 are snap-connected.

[0059] In some other embodiments, the first bracket 1120 and the second bracket 1122 are riveted.

[0060] It can be understood that two accommodating parts are provided on the connecting seat 112, and the telescopic oil cylinder and the telescopic water pipe 106 are respectively accommodated by the two accommodating parts. This not only facilitates the telescopic water pipe 106 to be supported to a certain extent by the connecting seat 112 and the telescopic oil cylinder, but also allows the telescopic water pipe 106 and the telescopic oil cylinder to be installed as a whole in the second arm 102, which is conducive to improving the convenience of built-in installation, and can also improve assembly efficiency, and the overall structure is more compact.

[0061] In any of the above embodiments, a limiting structure 1129 is further provided on the connecting seat 112, and the limiting structure 1129 is used to limit the rotation of the telescopic cylinder, which is beneficial to reduce the torque generated on the first arm 100 and the second arm 102 due to the rotation of the telescopic cylinder, thereby improving the working stability and reliability of the first arm 100 and the second arm 102, and reducing the phenomenon of the first arm 100 and the second arm 102 being damaged by torque.

[0062] In some embodiments, the limiting structure 1129 includes mutually cooperating fixing bolts and fixing screw holes. In other embodiments, the limiting structure 1129 includes mutually cooperating bosses and grooves, the bosses are arranged on the connecting seat 112, and the cylinder barrel 1040 of the telescopic oil cylinder is provided with a groove cooperating with the bosses. In still other embodiments, the connecting seat 112 is provided with a groove, and the cylinder barrel 1040 is provided with a boss cooperating with the groove.

[0063] In any of the above embodiments, the boom system 1 further includes a first water pipe 108, a second water pipe 110 and a water monitor threaded plate 116. The first water pipe 108 is connected to the first end, and the second water pipe 110 is connected to the second end, so as to extend the waterway, facilitate the connection of the water source and the water monitor respectively, and improve the convenience of using the waterway. By providing the water monitor threaded plate 116, it is convenient to connect the water monitor, that is, the water monitor can be connected to the first water pipe 108 through the water monitor threaded plate 116, or in other words, by providing the water monitor threaded plate 116, an intermediate connection structure is provided for the connection between the water monitor and the first water pipe 108, thereby improving the convenience of waterway connection.

[0064] like Figure 7 As shown, in the above embodiment, a threaded sleeve 1160 is provided on the water monitor threaded plate 116, and correspondingly, a threaded sleeve 1160 is provided on the two arms 102. The threaded sleeve 1160 is used to cooperate with the fastener to connect the water monitor threaded plate 116 and the two arms 102, and the threaded sleeve 1160 is provided at the corner position of the water monitor threaded plate 116 and the corresponding corner position of the two arms 102, so as to avoid the telescopic oil cylinder and the telescopic water pipe 106, and provide convenience for the internal installation of the telescopic oil cylinder and the telescopic water pipe 106. The threaded sleeve 1160 is provided at the corner position, which is also conducive to ensuring the strength of the threaded sleeve 1160 and ensuring the stability and reliability of the connection.

[0065] like Figure 1 and Figure 2 As shown, in any of the above embodiments, the boom system 1 further includes a guide rail frame 118 , a slider 120 , a pull rod slot 122 , a connector 124 and a drag chain 126 .

[0066] The guide rail frame 118 is connected to the cylinder barrel 1040. The slider 120 is at least partially disposed in the guide rail frame 118. The pull rod groove 122 is connected to one end of the slider 120 away from the guide rail frame 118. The pull rod groove 122 is also fixedly connected to the cylinder rod 1042. The connecting piece 124 is used to fix the two ends of the drag chain 126. Specifically, the connecting piece 124 is respectively provided on the pull rod groove 122 and the cylinder barrel 1040, wherein the connecting piece 124 is provided at the middle position of the pull rod groove 122, that is, the position between the two ends of the pull rod groove 122. One end of the drag chain 126 is connected to the pull rod groove 122 through the connecting piece 124, and the other end of the drag chain 126 is connected to the cylinder barrel 1040 through another connecting piece 124. The drag chain 126 is used to accommodate the cable 128, and the drag chain 126 is arranged adjacent to the telescopic water pipe 106 and the telescopic oil cylinder.

[0067] In this embodiment, the drag chain 126, the telescopic water pipe 106, and the telescopic oil cylinder are all arranged adjacent to each other, that is, the drag chain 126, the telescopic water pipe 106, and the telescopic oil cylinder are arranged roughly in a triangle. Figure 2 and Figure 3 As shown, the connection seat 112 is roughly in the shape of an "8", and the drag chain 126 is arranged on one side of the "8". The two rings of the "8", namely the first accommodating portion 1124 and the second accommodating portion 1126, respectively accommodate the telescopic water pipe 106 and the telescopic oil cylinder. The structure is compact, which facilitates the built-in of the drag chain 126, the telescopic oil cylinder and the telescopic water pipe 106 in the second arm 102. The drag chain 126 is only used to accommodate the cable 128, and the hydraulic pipeline is cancelled, so the space occupied by the drag chain 126 can be reduced, which is conducive to the purpose of building the drag chain 126, the telescopic water pipe 106, the telescopic oil cylinder and other components into the second arm 102, improving the compactness of the boom system 1 and reducing the space occupied by the boom system 1 as a whole.

[0068] Through the arrangement of the guide rail frame 118, the slider 120 and the rod groove 122, and the guide rail frame 118 is connected to the cylinder barrel 1040, and the rod groove 122 is connected to the cylinder rod 1042, when the cylinder barrel 1040 and the cylinder rod 1042 perform telescopic movements, the rod groove 122 can slide relative to the guide rail frame 118 through the slider 120, thereby driving the extension and shortening of the drag chain 126 connected thereto. The groove of the rod groove 122 can also provide a limiting and guiding function for the drag chain 126, and the rod groove 122 can also play a certain supporting and protective role for the drag chain 126, preventing the drag chain 126 from sagging under the action of gravity and rubbing against the two arms 102. Through the arrangement of the connector 124, it is convenient to fix the two ends of the drag chain 126 to the cylinder rod 1042 and the cylinder barrel 1040 respectively, so that the drag chain 126 can move with the extension and contraction of the cylinder barrel 1040 and the cylinder rod 1042.

[0069] like Figure 2 and Figure 7 As shown, further, the boom system 1 also includes a pipeline transmission channel 130. The pipeline transmission channel 130 is arranged adjacent to the drag chain 126. The pipeline transmission channel 130 is also arranged along the length direction of the two arms 102. The pipeline transmission channel 130 is arranged in the two arms 102 and is used to accommodate the cable 128, so as to support the cable 128 before the cable 128 enters the drag chain 126, so as to prevent the cable 128 from sagging due to gravity and affecting the operation of other components of the boom system 1. The pipeline transmission channel 130 can also protect and guide the cable 128 to avoid scratches and entanglement. The pipeline transmission channel 130 is arranged adjacent to the drag chain 126, so as to facilitate the cable to enter the drag chain 126 from the pipeline transmission channel 130. The pipeline transmission channel 130 is arranged along the length direction of the two arms 102, which is convenient for the wiring of the cable and makes the structure of the boom system 1 more compact.

[0070] like Figure 8 As shown, according to an embodiment of the second aspect of the present invention, there is provided a work vehicle 2, such as a fire truck, comprising: a vehicle body 20; a water system 22, the water system 22 being arranged in the vehicle body 20; a boom system 1 as in any one of the technical solutions in the first aspect mentioned above, being arranged on the vehicle body 20, and the telescopic water pipe 106 of the boom system 1 being connected to the water system 22.

[0071] In this embodiment, by adopting the boom system 1 of any one of the embodiments in the first aspect, all the beneficial effects of any one of the embodiments in the first aspect are achieved, which will not be described in detail. By providing the vehicle body 20, it is convenient to accommodate and install the boom system 1 through the vehicle body 20. By providing the waterway system 22, it is convenient to connect with the telescopic water pipe 106, supply water to the telescopic water pipe 106, or draw out the water in the telescopic water pipe 106 for use.

[0072] According to a specific embodiment of the present invention, the boom system 1 can improve the following problems:

[0073] 1) The hydraulic pipe is removed, only the cable 128 is retained, and only one set of drag chains 126 with a smaller width is used, which can save space and cost;

[0074] 2) One end of the drag chain 126 is a free end, and a wire groove, that is, a pull rod groove 122, is added below the drag chain 126 to play a guiding, supporting and protective role;

[0075] 3) If Figure 2 As shown, the drag chain 126 is placed on the left, the telescopic water pipe 106 and the telescopic oil cylinder are placed on the right, and the drag chain 126 and the telescopic water pipe 106 are both fixed on the telescopic oil cylinder, realizing integrated pre-installation and synchronous telescoping, and realizing that all parts are built into the boom system 1, and the boom system 1 has a compact structure and beautiful appearance;

[0076] 4) The telescopic water pipe 106 is fixed on the telescopic oil cylinder and supported by the oil cylinder, and the deflection is well controlled;

[0077] 5) Due to the fully built-in arrangement, the structure is compact, easy to install and maintain, and after being pre-installed in an integrated manner, it can be installed in the one arm 100 together with the two arms 102;

[0078] 6) Due to the fully built-in layout, the waterway and transmission system are more reliable, with flange connections and additional guide supports.

[0079] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0080] like Figure 1 As shown, the cylinder rod 1042 of the telescopic oil cylinder is fixed to the first arm 100 through the pin 134, the cylinder barrel 1040 is fixed to the second arm 102 through the first bolt 132, the guide rail frame 118 is fixed to the cylinder barrel 1040, one end of the pull rod groove 122 is fixed to the cylinder rod 1042, and the other end moves linearly in the guide rail frame 118 through the slider 120. One end of the drag chain 126 is fixed to the middle section of the pull rod groove 122 through the connecting piece 124, and the other end of the drag chain 126 is fixed to the cylinder barrel 1040 through the connecting piece 124. The small diameter end of the telescopic water pipe 106, that is, the second end, is fixed to the cylinder rod 1042 of the telescopic oil cylinder, and the large diameter end, that is, the first end, is fixed to the cylinder barrel 1040 through the connecting seat 112. Its structural form is as follows Figure 2 shown.

[0081] like Figure 1As shown, the cable 128 enters the rod groove 122 from the tail of the second arm 102, is fixed to the connector 124 in the middle of the rod groove 122, then enters the drag chain 126, is first fixed to the connector 124 at one end of the cylinder barrel 1040 of the telescopic oil cylinder, then merges into the pipeline transmission channel 130 at the tail of the second arm 102, and then extends from the side of the head of the second arm 102. The waterway is connected to the second end of the telescopic water pipe 106 through a flange from the second water pipe 110, then connected to the first water pipe 108 through the flange of the first end, connected to the water monitor threaded plate 116 through a flange, and finally enters the water monitor.

[0082] The first water pipe 108 and the second water pipe 110 are both rubber water pipes.

[0083] As for the cable 128, when in use, the telescopic oil cylinder extends the cylinder barrel 1040, drives the guide rail frame 118, causes the rod slot 122 to slide along the guide rail frame 118 through the slider 120, and at the same time drives the drag chain 126 fixed at one end of the cylinder barrel 1040 of the telescopic oil cylinder toward the head direction of the second arm 102, that is, moves along the extension direction of the cylinder barrel 1040, until the entire boom system 1 is deployed. During the retraction process, the cylinder barrel 1040 of the telescopic oil cylinder retracts, and the guide rail frame 118 and the second arm 102 retract together, causing the rod slot 122 to slide along the guide rail frame 118 through the slider 120, and at the same time, the cylinder barrel 1040 of the telescopic oil cylinder drives the drag chain 126 to retract until the entire boom system 1 is completely retracted.

[0084] For the waterway, when in use, the telescopic oil cylinder extends the cylinder barrel 1040, and drives the first end of the telescopic water pipe 106 to extend synchronously through the connecting seat 112 until the entire boom system 1 is deployed. During the retraction process, the cylinder barrel 1040 of the telescopic oil cylinder retracts, and drives the second end of the telescopic water pipe 106 to retract synchronously through the connecting seat 112 until the entire boom system 1 is fully retracted.

[0085] Considering the convenience of installation, two groups of threaded holes are provided on the water monitor threaded plate 116, one group of threaded holes is used to connect with the water monitor, and the other group of threaded holes is used to connect with the two arms 102. One end of the water monitor threaded plate 116 is a welded flange connected to the first water pipe 108. During installation, the first end of the telescopic water pipe 106 is connected to the cylinder barrel 1040 of the telescopic oil cylinder through the connecting seat 112, and the second end of the telescopic water pipe 106 is connected to the cylinder rod 1042 of the telescopic oil cylinder through the connecting frame 114. Then the guide rail frame 118 is installed on the plurality of connecting seats 112, one end of the pull rod groove 122 is connected to the connecting frame 114, and the other end of the pull rod groove 122 is installed with the slider 120 and placed in the guide rail frame 118. Then one end of the drag chain 126 with the cable 128 installed is fixed to the pull rod groove 122 with the connecting piece 124, and the other end of the drag chain 126 is fixed to the cylinder barrel 1040 of the telescopic oil cylinder with the connecting piece 124. Then connect the first water pipe 108 and the second water pipe 110, and install the pre-assembled assembly (i.e., telescopic oil cylinder, telescopic water pipe 106, first water pipe 108, second water pipe 110, drag chain 126, guide rail frame 118, etc.) from the head of the second arm 102 into the second arm 102. The cable 128 passes through the pipeline transmission channel 130 at the tail of the second arm 102 to the side of the head of the second arm 102, and the water monitor threaded plate 116 is installed. At this time, the telescopic oil cylinder is fixed to the second arm 102 by the first bolt 132. Install the slider 120 between the second arm 102 and the first arm 100, install the second arm 102 into the first arm 100, and finally fix the cylinder rod 1042 of the telescopic oil cylinder to the first arm 100 by the pin 134.

[0086] The specific implementation is as follows:

[0087] like Figure 2 As shown, the arm system 1 includes a water monitor threaded plate 116, two arms 102, a cable 128, an arm 100, a first water pipe 108, a telescopic cylinder, that is, a driving device 104, a connecting seat 112, a slider 120, a telescopic water pipe 106, a drag chain 126, a connector 124, a guide rail frame 118, a pull rod groove 122, a second water pipe 110, a pipeline transmission channel 130 and a connecting frame 114, etc.

[0088] Working principle: For the cable 128, when in use, the telescopic oil cylinder extends the cylinder barrel 1040, drives the guide rail frame 118, makes the rod slot 122 slide along the guide rail frame 118 through the slider 120, and drives the drag chain 126 fixed on the cylinder barrel 1040 of the telescopic oil cylinder to move toward the head direction of the second arm 102 until the entire boom system 1 is unfolded. During the retraction process, the cylinder barrel 1040 of the telescopic oil cylinder retracts, and the guide rail frame 118 and the second arm 102 retract together, making the rod slot 122 slide along the guide rail frame 118 through the slider 120, and at the same time, the cylinder barrel 1040 of the telescopic oil cylinder drives the drag chain 126 to retract until the entire boom system 1 is fully retracted.

[0089] For the waterway, when in use, the telescopic oil cylinder extends the cylinder barrel 1040, and drives the first end of the telescopic water pipe 106 to extend synchronously through the connecting seat 112 until the entire boom system 1 is deployed. During the retraction process, the cylinder barrel 1040 of the telescopic oil cylinder retracts, and drives the first end of the telescopic water pipe 106 to retract synchronously through the connecting seat 112 until the entire boom system is fully retracted.

[0090] This specific embodiment has the following advantages:

[0091] 1) The drag chain is one set, saving space and cost;

[0092] 2) One end of the drag chain is a free end, and a pull rod groove and a guide rail frame are added below the drag chain to guide, support and protect;

[0093] 3) The drag chain and waterway are on each side, and both are fixed on the telescopic cylinder, realizing integrated pre-installation and synchronous telescopic, realizing the built-in structure of all parts, and the arm system is compact and beautiful in appearance;

[0094] 4) The telescopic water pipe is fixed on the telescopic oil cylinder and is affected by the cylinder so that the deflection is well controlled.

[0095] In other specific embodiments, the drag chain is arranged between the height or width gap below the first arm and the second arm, that is, the drag chain is set between the first arm and the second arm.

[0096] The above describes in detail the embodiment provided according to the present invention in combination with the accompanying drawings. Through the above embodiment, components such as cables and telescopic water pipes are effectively built into the boom system, reducing the space occupied by the outside of the boom, reducing the possibility of cables, water pipes and other components being scratched and entangled, improving the convenience of using the boom system, and also helping to reduce the sagging of components such as cables, drag chains, and water pipes due to gravity.

[0097] In the embodiments according to the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments according to the present invention can be understood according to specific circumstances.

[0098] In the description of the embodiments of the present invention, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the embodiments of the present invention.

[0099] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example according to the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0100] The above are only preferred embodiments according to the present invention and are not intended to limit the embodiments according to the present invention. For those skilled in the art, various modifications and changes may be made to the embodiments according to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments according to the present invention shall be included in the protection scope of the embodiments according to the present invention.

Claims

1. A boom system, characterized in that: include: One arm (100); Two arms (102), the two arms (102) being at least partially sleeved within the one arm (100); A driving device (104) partially disposed in the two arms (102), and the driving device (104) is respectively connected to the one arm (100) and the two arms (102), and the two arms (102) are extended and retracted relative to the one arm (100) through the driving device (104); The telescopic water pipe (106) is at least partially disposed in the two arms (102). Wherein, the telescopic water pipe (106) is extended or shortened along with the two arms (102); The telescopic water pipe (106) is connected to the driving device (104), the telescopic water pipe (106) comprises a first end and a second end, and the diameter of the first end is greater than the diameter of the second end; The driving device (104) is a telescopic oil cylinder, the telescopic oil cylinder comprising a cylinder barrel (1040) and a cylinder rod (1042), the cylinder rod (1042) being telescopically disposed in the cylinder barrel (1040); A guide rail frame (118), the guide rail frame (118) being arranged on one side of the circumference of the cylinder barrel (1040), and the guide rail frame (118) being connected to the cylinder barrel (1040); A slider (120), wherein the slider (120) is at least partially disposed in the guide rail frame (118) and is capable of sliding along the guide rail frame (118); A pull rod groove (122) connected to an end of the sliding block (120) away from the guide rail frame (118), and the pull rod groove (122) is also fixedly connected to the cylinder rod (1042); A connecting piece (124), the connecting piece (124) being respectively provided at the middle section of the pull rod groove (122) and at one end of the cylinder barrel (1040) close to the cylinder rod (1042); A drag chain (126), one end of the drag chain (126) is connected to the pull rod groove (122) via the connecting piece (124), and the other end of the drag chain (126) is connected to the cylinder barrel (1040) via another connecting piece (124); the drag chain (126) is used to accommodate a cable (128), and the drag chain (126) and the telescopic water pipe (106) and the telescopic oil cylinder are all arranged adjacent to each other; The drag chain (126), the telescopic water pipe (106), and the telescopic oil cylinder are arranged in a triangle.

2. The boom system according to claim 1, characterized in that: The boom system (1) further comprises: A connecting seat (112), wherein the first end is connected to the cylinder barrel (1040) via the connecting seat (112); A connecting frame (114), wherein the second end is connected to the cylinder rod (1042) via the connecting frame (114).

3. The boom system according to claim 2, characterized in that: The connecting seat (112) comprises a first bracket (1120) and a second bracket (1122); the first bracket (1120) and the second bracket (1122) together enclose a first accommodating portion (1124) and a second accommodating portion (1126); the first accommodating portion (1124) is used to accommodate the telescopic water pipe (106); the second accommodating portion (1126) is used to accommodate the telescopic oil cylinder; and the first bracket (1120) and the second bracket (1122) are bolted, clamped or riveted.

4. The boom system according to claim 2 or 3, characterized in that: The connection seat (112) is also provided with a limiting structure (1129), and the limiting structure (1129) is used to limit the rotation of the telescopic oil cylinder.

5. The boom system according to any one of claims 1 to 3, characterized in that: Also includes: A first water pipe (108) connected to a first end of the telescopic water pipe (106); A second water pipe (110) connected to the second end of the telescopic water pipe (106); The water monitor threaded plate (116) is used to connect the water monitor and the first water pipe (108).

6. The boom system according to claim 5, characterized in that: Threaded sleeves (1160) are respectively provided at the corner positions of the water monitor threaded plate (116) and the corresponding corner positions of the two arms, and the threaded sleeves (1160) are used to cooperate with fasteners to connect the water monitor threaded plate (116) and the two arms (102).

7. The boom system according to claim 1, characterized in that: Also includes: A pipeline transmission channel (130) is arranged in the two arms (102), the pipeline transmission channel (130) is arranged adjacent to the drag chain (126), and the pipeline transmission channel (130) is also arranged along the length direction of the two arms (102); the pipeline transmission channel (130) is used to accommodate the cable (128).

8. The boom system according to claim 2 or 3, characterized in that: The cylinder barrel (1040) of the telescopic oil cylinder is connected to the two arms (102) via a first bolt (132); The cylinder rod (1042) of the telescopic oil cylinder is connected to the arm (100) via a pin shaft (134) or the first bolt (132).

9. A working vehicle, characterized in that: include: Body (20); A water system (22), wherein the water system (22) is disposed in the vehicle body (20); The boom system (1) according to any one of claims 1 to 8, is arranged on the vehicle body (20), and the telescopic water pipe (106) of the boom system (1) is connected to the water system (22).

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