Cross-country telescopic boom forklift with quick-change fork arm carrier

Abstract

The invention relates to the related technical field of telescopic arm forklifts, and discloses a cross-country telescopic arm forklift with a quick-change fork arm carrier, the cross-country telescopic arm forklift comprises a fork shovel goods shelf, the fork shovel goods shelf comprises a mounting assembly and a connecting assembly, and the connecting assembly and the mounting assembly are connected in an opposite insertion mode, so that a fork shovel connector part is convenient to replace; the part of the mounting assembly is connected with the part of the arm support assembly in a bolt insertion manner, so that a joint is convenient to replace in actual operation; according to the cross-country telescopic arm forklift with the quick-change type fork arm frame, the mounting assembly and the front arm mounting frame are connected through the plug pins and the bolts, and a butt-inserting and embedding structure of the first buckle and the first-stage positioning plate and a butt-inserting and embedding structure of the second buckle and the second-stage positioning plate are designed, so that quick disassembly and assembly of the fork arm frame are achieved. In the traditional forklift operation, the replacement of a fork frame often needs a professional tool and takes a long time, the average replacement time of each time is about 30 minutes, and the process is tedious and is easily interfered by environmental factors.

Description

Technical Field

[0001] The present invention belongs to the technical field related to telescopic forklifts, and more specifically, particularly relates to an off-road telescopic forklift with a quick-change fork rack. Background Art

[0002] With the rapid development of modern industry, the demand for material handling equipment in industries such as logistics, construction, and warehousing is becoming increasingly diverse and complex. As an efficient material handling equipment that combines the functions of a forklift and a crane, telescopic forklifts are gradually emerging in various working conditions. With its telescopic boom, it can achieve long-distance and high-altitude material handling and loading / unloading operations. However, the telescopic forklifts in the prior art have the following defects: In the prior art, both telescopic forklifts and traditional forklifts generally have the problem of low efficiency in fork rack replacement. When replacing the fork rack of a traditional forklift, various tools such as wrenches and screwdrivers are required. First, the fixing bolts need to be removed, then the old fork rack is removed. When installing the new fork rack, it is necessary to re-align and tighten the bolts again. The entire process is cumbersome, and a single replacement often takes more than 30 minutes, seriously affecting the operation progress. Moreover, in complex working scenarios such as narrow spaces and muddy ground, the operation difficulty is further increased. It not only requires high skills from the operators but also is prone to installation deviations. Although ordinary telescopic forklifts have a wider working range, the fork rack replacement structure is not reasonably designed, and there are also problems such as long replacement time and poor adaptability.

[0003] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and an off-road telescopic forklift with a quick-change fork rack is provided, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0004] The present invention provides an off-road telescopic forklift with a quick-change fork rack to overcome the above-mentioned defects in the prior art.

[0005] The purpose and effect of an off-road telescopic forklift with a quick-change fork rack of the present invention are achieved by the following specific technical means: An off-road telescopic forklift with a quick-change fork rack, the output end of the off-road forklift is connected with a boom assembly, and the end of the boom assembly is fixedly connected with a fork shovel shelf; The fork shovel shelf includes two parts, an installation component and a connection component. The part of the connection component is connected to the part of the installation component by means of insertion, which is convenient for replacing the fork shovel joint part; the part of the installation component is connected to the component of the boom assembly by means of inserting bolts, which is convenient for replacing the joint in actual operation; A locking component is provided inside a part of the installation component. The locking component can accurately adjust the locking strength of a part of the connection component according to the adjustment distance of the forklift forks, ensuring that the entire mechanical structure can operate stably and efficiently under different working conditions.

[0006] In a further technical solution, the installation component includes a boom guard plate. The boom guard plate is provided with a middle frame. The middle frame is vertically and arrayedly provided with a first-level positioning component and a second-level positioning component. The first-level positioning component is arranged above the second-level positioning component. Two first-level positioning plates are fixedly provided on the outer surface of the first-level positioning component. The surface of the first-level positioning plate is provided with first-level circular positioning holes. Two second-level positioning plates are arrayedly provided on the outside of the second-level positioning component. The surface of the second-level positioning plate is provided with second-level circular positioning holes.

[0007] In a further technical solution, two groups of inclined fixing plates are fixedly installed on the back surfaces of the first-level positioning component and the second-level positioning component. A first-level cross column is connected between the two groups of inclined fixing plates. A second-level cross column is also fixedly connected between the two groups of first-level cross columns. A swing piece is fixedly connected to the outside of the second-level cross column. A through hole is provided at the outer end of the swing piece. A first locking buckle is inserted into the through hole.

[0008] In a further technical solution, the connection component includes two groups of horizontally arranged cross plates. Installation back plates are connected to both ends of the two groups of cross plates. A first buckle and a second buckle are fixedly provided on the outside of the two groups of installation back plates. The second buckle is arranged below the first buckle. An embedding groove is provided at the connection between the first buckle and the installation back plate. A barb is provided at the connection between the second buckle and the installation back plate. The first buckle and the first-level positioning plate achieve socket connection. The second buckle and the second-level positioning plate achieve embedding and limiting.

[0009] In a further technical solution, the locking component includes the first-level cross column. An inner cavity is provided inside the first-level cross column. A bidirectional motor is fixedly installed in the middle of the inner cavity. Output rotating shafts are fixedly connected to the two output ends of the bidirectional motor. Locking blocks are fixedly connected to the ends of the two groups of output rotating shafts. A side airbag is fixedly connected to the outside of the locking block. The other end of the side airbag is fixedly connected to the side wall of the inner cavity.

[0010] In a further technical solution, a friction airbag is also provided above the locking block. The friction airbag is internally communicated with the side airbag. A threaded through hole is provided on the locking block. A fork shovel is threadedly installed in the threaded through hole. An air delivery pipe is connected between the second-level cross column and the first-level cross column. A pressure stabilizing cavity is provided inside the air delivery pipe.

[0011] Further technical solution: The primary positioning plate includes a housing. A cavity is provided inside the housing. A second locking buckle is installed in the cavity. The second locking buckle moves inside the primary circular positioning hole. A piston plate is provided on the outer side of the second locking buckle. A high-pressure chamber is provided between the piston plate and the second locking buckle. A return spring is connected between the piston plate and the inner wall of the housing. A connecting pipe is connected to the outside of the housing. The connecting pipe is in communication with the inside of the pressure stabilizing chamber.

[0012] Further technical solution: An outer trachea is movably connected to the outside of the secondary cross column. The fork shovel is internally provided with protruding airbag holes. A cavity is provided inside the fork shovel. The cavity is in socket communication with the outer trachea. When the cavity is inflated, the protruding airbag holes will protrude to increase friction.

[0013] Further technical solution: The boom assembly includes a boom support. The boom support is fixedly connected to the off-road forklift. A boom is hinged on the boom support. A hydraulic support rod is fixedly connected between the boom and the boom support. The output end of the boom is fixedly connected with a forearm mounting frame assembly. The end of the forearm mounting frame assembly is connected to the boom assembly through the first locking buckle.

[0014] Further technical solution: The structure of the secondary positioning plate is the same as that of the primary positioning plate. The inside of the secondary positioning plate is in communication with the inside of the pressure stabilizing chamber. The hydraulic pressure inside the pressure stabilizing chamber pushes the second locking buckle provided on the secondary positioning plate and the primary positioning plate to realize locking connection with the connection assembly.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The off-road telescopic boom forklift with a quick-change fork rack of the present invention uses a bolt connection to install the assembly and the forearm mounting frame, and designs a plug-in and embedding structure of the first buckle and the primary positioning plate, and the second buckle and the secondary positioning plate, to realize the quick disassembly and installation of the fork rack. In traditional forklift operations, replacing the fork rack often requires professional tools and a long time. On average, each replacement takes about 30 minutes, and the process is cumbersome and vulnerable to environmental factors. However, with the quick-change structure of the present invention, with the convenient plugging and unplugging of the bolt and the precise positioning of the plug-in and embedding structure, the operator does not need complex tools and only needs simple operations to complete the replacement of the fork rack within 5 minutes. This quick replacement ability greatly reduces the idle time of the equipment, improves the equipment utilization rate, and significantly enhances the versatility and operation efficiency of the forklift. Compared with traditional forklifts, the comprehensive work efficiency can be increased by more than 60%.

[0016] In the present invention, a cross-country telescopic boom forklift with a quick-change fork carrier uses a bidirectional motor to drive a locking block, in cooperation with side airbags, friction airbags, and a pressure stabilizing chamber, to automatically adjust the fork spacing and locking force according to the size of the goods. When the fork spacing changes, the side airbag is compressed to change the pressure in the pressure stabilizing chamber, and at the same time, the friction airbag expands to enhance the connection tightness, ensuring both the stable locking of the connecting parts under different working conditions and preventing failure caused by hydraulic leakage. In actual operation, when handling small and precise instruments, the fork spacing is small, and the system automatically provides a small but stable locking force to avoid damaging the goods due to excessive extrusion; when handling large and heavy equipment, the fork spacing is enlarged, and the system senses in real time and automatically increases the locking force to ensure that the goods are stable and do not slip. In the past, traditional forklifts needed to manually adjust the locking device when handling goods of different weights, which not only had low adjustment accuracy but also had the risk of insufficient or excessive locking caused by human error.

[0017] In the present invention, a cross-country telescopic boom forklift with a quick-change fork carrier fixes the fork by bolts and fills the protruding airbag holes of the fork with liquid through an outer air pipe. Using the supporting force generated by the expansion of the airbag, the structural strength of the fork is enhanced, the stress during the handling of goods is dispersed, the risk of fork deformation is reduced, and the service life of the fork is extended. In traditional fork operations, when handling heavy goods, the fork is prone to bending and deformation, especially under frequent operations, and the deformed fork may also affect the stability and safety of goods handling. In the fork reinforcement support design of the present invention, when handling heavy goods, the liquid fills the protruding airbag holes, and the airbag expands to form a uniform supporting force, which evenly disperses the stress generated by the weight of the goods to each part of the fork. The enhanced structural strength improves the safety and reliability of the forklift during equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] The present invention will be further described below in conjunction with the drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall external structure of the present invention; Figure 2 It is a schematic diagram of the overall top view structure of the present invention; Figure 3 It is a schematic diagram of the overall external structure of the boom assembly and the fork rack in the present invention; Figure 4 It is a schematic diagram of the overall bottom view structure of the boom assembly and the fork rack in the present invention; Figure 5It is a schematic diagram of the overall side view structure of the boom assembly and the fork shovel shelf in the present invention; Figure 6 It is a schematic diagram of the overall front view structure of the mounting assembly in the present invention; Figure 7 It is a schematic diagram of the overall outer back structure of the mounting assembly in the present invention; Figure 8 It is a schematic diagram of the overall front view structure of the connecting assembly in the present invention; Figure 9 It is a schematic diagram of the overall appearance structure of the fork shovel shelf in the present invention; Figure 10 It is a schematic diagram of the overall side sectional structure of the fork shovel shelf in the present invention; Figure 11 It is a schematic diagram of the overall top sectional structure of the mounting assembly in the present invention.

[0021] Explanation of reference numerals: Off-road forklift 11, boom assembly 12, fork shovel shelf 13, boom 14, hydraulic support rod 15, boom support 16, front arm mounting frame assembly 17, mounting assembly 18, connecting assembly 19, boom guard plate 24, primary positioning assembly 25, secondary positioning assembly 26, primary positioning plate 28, primary circular positioning hole 29, secondary positioning plate 30, secondary circular positioning hole 31, primary cross column 33, swing piece 34, secondary cross column 35, first locking buckle 36, mounting back plate 37, first buckle 38, second buckle 39, cross plate 41, piston plate 42, second locking buckle 43, return spring 44, connecting pipe 45, bidirectional motor 46, friction airbag 47, air delivery pipe 48, outer air pipe 49, protruding airbag hole 50, inner cavity 51, output rotating shaft 52, locking block 53, side airbag 54, pressure stabilizing cavity 55. Detailed implementation manners

[0022] The following further describes in detail the implementation manners of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "backend", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] As shown in the Figure 1 to the Figure 11 accompanying drawings: The present invention provides a cross-country telescopic boom forklift with a quick-change fork rack. The output end of the cross-country forklift 11 is connected to a boom assembly 12, and a fork shovel shelf 13 is fixedly connected to the end of the boom assembly 12; The fork shovel shelf 13 includes two parts, an installation component 18 and a connection component 19. The part of the connection component 19 is connected to the part of the installation component 18 in a plug-in manner, which facilitates the replacement of the fork shovel joint part; the part of the installation component 18 and the component of the boom assembly 12 are connected by inserting bolts, which is convenient for replacing the joint in actual operation; A locking component is provided inside the part of the installation component 18. The locking component can accurately adjust the locking strength of the part of the connection component 19 according to the adjustment distance of the fork, ensuring that the entire mechanical structure can operate stably and efficiently under different working conditions.

[0026] Preferably, referring to the Figure 6 accompanying drawings, the installation component 18 includes a boom protection plate 24. The boom protection plate 24 is provided with a middle frame. The middle frame is vertically and arrayedly provided with a first-level positioning component 25 and a second-level positioning component 26. The first-level positioning component 25 is arranged above the second-level positioning component 26. Two first-level positioning plates 28 are fixedly provided on the outer surface of the first-level positioning component 25. The surface of the first-level positioning plate 28 is provided with first-level circular positioning holes 29. Two second-level positioning plates 30 are arrayedly provided on the outside of the second-level positioning component 26. The surface of the second-level positioning plate 30 is provided with second-level circular positioning holes 31.

[0027] Preferably, referring to the Figure 7 accompanying drawings, two groups of inclined fixing plates are fixedly installed on the back of the first-level positioning component 25 and the second-level positioning component 26. A first-level cross column 33 is connected between the two groups of inclined fixing plates. A second-level cross column 35 is also fixedly connected between the two groups of first-level cross columns 33. A swing piece 34 is fixedly connected to the outside of the second-level cross column 35. A through hole is provided at the outer end of the swing piece 34, and a first locking buckle 36 is inserted into the through hole.

[0028] Preferably, referring to the Figure 8, the connection component 19 includes two groups of horizontal plates 41 arranged vertically. Installation backplates 37 are connected to both ends of the two groups of horizontal plates 41. A first buckle 38 and a second buckle 39 are fixedly provided on the outer sides of the two installation backplates 37. The second buckle 39 is arranged below the first buckle 38. An embedding groove is provided at the connection between the first buckle 38 and the installation backplate 37, and a barb is provided at the connection between the second buckle 39 and the installation backplate 37. The first buckle 38 and the first-level positioning plate 28 are connected in a socket-and-spigot manner, and the second buckle 39 and the second-level positioning plate 30 are connected for embedding and limiting.

[0029] Preferably, referring to the attached Figure 10 and the attached Figure 11 , the locking component includes the first-level cross column 33. An inner cavity 51 is provided inside the first-level cross column 33. A bidirectional motor 46 is fixedly installed in the middle of the inner cavity 51. Output rotating shafts 52 are fixedly connected to the two output ends of the bidirectional motor 46. Locking blocks 53 are fixedly connected to the ends of the two output rotating shafts 52. A side airbag 54 is fixedly connected to the outside of the locking block 53, and the other end of the side airbag 54 is fixedly connected to the side wall of the inner cavity 51.

[0030] Preferably, referring to the attached Figure 10 and the attached Figure 11 , a friction airbag 47 is further provided above the locking block 53. The friction airbag 47 is internally communicated with the side airbag 54. A threaded through hole is provided on the locking block 53, and a fork shovel is threadedly installed in the threaded through hole. An air delivery pipe 48 is connected between the second-level cross column 35 and the first-level cross column 33, and a voltage stabilizing cavity 55 is provided inside the air delivery pipe 48.

[0031] Preferably, referring to the attached Figure 10 and the attached Figure 11 , the first-level positioning plate 28 includes a housing. A cavity is provided inside the housing. A second locking buckle 43 is installed in the cavity. The second locking buckle 43 moves inside the first-level circular positioning hole 29. A piston plate 42 is provided on the outside of the second locking buckle 43. A high-pressure cavity is provided between the piston plate 42 and the second locking buckle 43. A return spring 44 is connected between the piston plate 42 and the inner wall of the housing. A connecting pipe 45 is connected to the outside of the housing, and the connecting pipe 45 is internally communicated with the voltage stabilizing cavity 55.

[0032] Preferably, referring to the attached Figure 10 and the attached Figure 11 , an outer air pipe 49 is movably connected to the outside of the second-level cross column 35. A protruding airbag hole 50 is provided inside the fork shovel. A cavity is provided inside the fork shovel, and the cavity is connected to the outside through the outer air pipe 49 in a socket-and-spigot manner. When the cavity is inflated, the protruding airbag hole 50 will protrude to increase friction.

[0033] Preferably, referring to the appendix Figure 3 , the boom assembly 12 includes a boom bracket 16, the boom bracket 16 is fixedly connected to the rough terrain forklift 11, a boom 14 is hinged on the boom bracket 16, a hydraulic support rod 15 is fixedly connected between the boom 14 and the boom bracket 16, the output end of the boom 14 is fixedly connected with a forearm mounting frame assembly 17, and the end of the forearm mounting frame assembly 17 is connected to the boom assembly 12 through the first locking buckle 36.

[0034] Preferably, referring to the appendix Figure 6 and the appendix Figure 10 , the structure of the secondary positioning plate 30 is the same as that of the primary positioning plate 28, the inside of the secondary positioning plate 30 is communicated with the inside of the pressure stabilizing cavity 55, and the hydraulic pressure inside the pressure stabilizing cavity 55 pushes the secondary positioning plate 30 and the second locking buckle 43 provided on the primary positioning plate 28 to realize locking connection with the connection assembly 19.

[0035] Specific usage method of the present invention: Before using this device, first install the installation assembly 18 on the forearm mounting frame assembly 17 of the forklift, complete the installation of the quick-change head through the pin bolt, and then the connection assembly 19 suitable for different scenarios can be installed. When installing the connection assembly 19, place it horizontally with the installation assembly 18, horizontally align the first buckle 38 and the second buckle 39 of the connection assembly 19 with the primary positioning plate 28 and the secondary positioning plate 30 of the installation assembly 18, and after alignment, horizontally push the connection assembly 19 to make it firmly clamped with the installation assembly 18. The pin bolt connection method is convenient for quick disassembly and replacement, meeting the requirements of different operation scenarios. The design of the first buckle 38 and the primary positioning plate 28, and the second buckle 39 and the secondary positioning plate 30 utilizes the principle of socket and embedding limit to form a stable mechanical connection, ensuring that the connection assembly 19 is not easily loosened on the installation assembly 18, realizing the quick replacement of the fork carriage, being able to adapt to different usage scenarios, solving the problem of troublesome replacement of the traditional forklift fork carriage, and improving the work efficiency.

[0036] After the vehicle starts, the internal hydraulic oil circuit of the vehicle is connected to the installation assembly 18, and the pressure stabilizing cavity 55 is hydraulically pushed horizontally to keep the installation assembly 18 and the connection assembly 19 in a constant pressure locking state. After the hydraulic oil circuit is connected, by horizontally pushing the pressure stabilizing cavity 55 hydraulically, using the pressure characteristics of the hydraulic pressure, a constant locking force is provided for the installation assembly 18 and the connection assembly 19, ensuring the stable connection between the components during the operation of the equipment, avoiding connection loosening caused by factors such as vibration, ensuring the stable connection between the installation assembly and the connection assembly during the operation of the equipment, reducing the possible failures caused by connection loosening, and improving the reliability of the equipment operation.

[0037] The operator adjusts the distance between the two forklift blades according to the size of the goods. When adjusting the distance, the bidirectional motor 46 inside the first-level cross column 33 drives the output rotating shaft 52 to rotate, and the output rotating shaft 52 drives the locking block 53 to move horizontally. The moving locking block 53 squeezes the side airbag 54, and the liquid in the side airbag 54 flows into the pressure stabilizing cavity 55 through the pipeline, pressurizing the pressure stabilizing cavity 55 to prevent the locking of the connecting parts from failing due to hydraulic leakage. At the same time, the larger the goods, the farther the distance between the forklift blades, and the greater the required locking force. After the side airbag 54 is squeezed, part of the liquid enters the friction airbag 47, causing it to expand, filling and locking the connection of the forklift blades. The bidirectional motor 46 drives the output rotating shaft 52 to rotate, realizing precise control of the position of the locking block 53. The side airbag 54 transports the liquid to the pressure stabilizing cavity 55 after being compressed, playing a role in pressure compensation and maintaining the stability of the locking pressure. The liquid flows into the friction airbag 47 to make it expand, generating frictional force by the deformation of the airbag, enhancing the fastening degree of the connection of the forklift blades, and automatically adjusting the locking force according to the weight of the goods. It can automatically adjust the distance between the forklift blades and the locking force according to the size of the goods, ensuring stable operation when handling goods of different sizes, and improving the applicability and safety of the equipment.

[0038] The liquid squeezed and pushed by the side airbag 54 enters the first-level positioning plate 28 through the connecting pipe 45, pushes the piston plate 42, squeezes the locking buckle 43 to make it extend, and locks the second buckle 39; the liquid entering the pressure stabilizing cavity 55 enters the second-level positioning plate 30 through the pipeline and locks with the second-level circular positioning hole 31, further ensuring the stability of the connection assembly 19. The pressure transmission of the liquid pushes the piston plate 42, converting hydraulic energy into mechanical energy, making the locking buckle 43 extend and cooperate with the second buckle 39 for locking. The liquid entering the pressure stabilizing cavity 55 then acts on the second-level positioning plate 30, and through cooperation with the second-level circular positioning hole 31, a double-locking structure is formed, restricting the displacement of the connection assembly 19 from multiple directions and enhancing the overall connection stability. The stability of the connection assembly is further enhanced through the double-locking structure, reducing the risk of loosening or displacement of the connection assembly during operation and ensuring the normal operation of the equipment.

[0039] When installing the fork shovel, fix the fork shovel above the locking block 53 with bolts and connect it to the outer air pipe 49 by socket connection. After the liquid in the side airbag 54 enters the pressure stabilizing cavity 55, it then enters the inside of the fork shovel through the outer air pipe 49 to fill the protruding airbag holes 50, providing hardness support for the fork shovel and enhancing safety. The bolt fixation ensures a rigid connection between the fork shovel and the locking block 53. The liquid fills the protruding airbag holes 50, and by using the supporting force after the airbag expands, the structural strength of the fork shovel is enhanced, the stress is dispersed when carrying goods, the risk of fork shovel deformation is reduced, and thus the safety of the equipment during operation is improved. The structural strength of the fork shovel is enhanced, the possibility of deformation of the fork shovel when carrying goods is reduced, the service life of the fork shovel and the safety of equipment operation are improved.

[0040] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A cross-country telescopic forklift with a quick-change fork carrier, where the output end of the cross-country forklift (11) is connected to a boom assembly (12), and a fork shovel shelf (13) is fixedly connected to the end of the boom assembly (12). It is characterized in that: The fork shovel shelf (13) includes two parts, an installation component (18) and a connection component (19). The part of the connection component (19) is connected to the part of the installation component (18) in an insertion manner, which facilitates the replacement of the fork shovel joint part; the part of the installation component (18) is connected to the component of the boom assembly (12) by inserting bolts, which is convenient for replacing the joint during actual operation. A locking component is provided inside the part of the installation component (18). The locking component can accurately adjust the locking strength of the part of the connection component (19) according to the adjustment distance of the fork, ensuring that the entire mechanical structure can operate stably and efficiently under different working conditions.

2. The off-road telescopic forklift with a quick-change fork carriage according to claim 1, characterized in that: The installation component (18) includes a boom protection plate (24). The boom protection plate (24) is provided with a middle frame, and a first-level positioning component (25) and a second-level positioning component (26) are vertically arranged in the middle frame in an array; the first-level positioning component (25) is arranged above the second-level positioning component (26). Two first-level positioning plates (28) are fixedly provided on the outer surface of the first-level positioning component (25), and first-level circular positioning holes (29) are provided on the surface of the first-level positioning plates (28). Two second-level positioning plates (30) are arranged in an array on the outside of the second-level positioning component (26), and second-level circular positioning holes (31) are provided on the surface of the second-level positioning plates (30).

3. The off-road telescopic forklift with a quick-change fork carriage according to claim 2, characterized in that: Two groups of inclined fixing plates are fixedly installed on the back of the first-level positioning component (25) and the second-level positioning component (26). A first-level cross column (33) is connected between the two groups of inclined fixing plates. A second-level cross column (35) is also fixedly connected between the two groups of first-level cross columns (33). A swing piece (34) is fixedly connected to the outside of the second-level cross column (35). A through hole is provided at the outer end of the swing piece (34), and a first locking buckle (36) is inserted into the through hole.

4. The cross-country telescopic forklift with a quick-change fork carriage according to claim 3, characterized in that: The connection component (19) includes two groups of horizontally arranged plates (41) arranged vertically. Installation back plates (37) are connected to both ends of the two groups of horizontally arranged plates (41). A first buckle (38) and a second buckle (39) are fixedly provided on the outside of the two groups of installation back plates (37); the second buckle (39) is arranged below the first buckle (38). An embedding groove is provided at the connection between the first buckle (38) and the installation back plate (37), and a barb is provided at the connection between the second buckle (39) and the installation back plate (37). The first buckle (38) is connected to the first-level positioning plate (28) in a socket connection manner, and the second buckle (39) is connected to the second-level positioning plate (30) in an embedding and limiting manner.

5. The telescopic boom forklift with a quick-change fork carriage according to claim 4, characterized in that: The locking assembly includes the first-level cross column (33). An inner cavity (51) is provided inside the first-level cross column (33). A bidirectional motor (46) is fixedly installed in the middle of the inner cavity (51). Output rotating shafts (52) are fixedly connected to the two output ends of the bidirectional motor (46). Locking blocks (53) are fixedly connected to the ends of the two groups of output rotating shafts (52). Side air bags (54) are fixedly connected to the outer sides of the locking blocks (53). The other ends of the side air bags (54) are fixedly connected to the side walls of the inner cavity (51).

6. A cross-country telescopic forklift with a quick-change fork carriage according to claim 5, characterized in that: A friction air bag (47) is further provided above the locking block (53). The friction air bag (47) is internally communicated with the side air bag (54). A threaded through hole is provided on the locking block (53), and a fork shovel is threadedly installed in the threaded through hole. An air delivery pipe (48) is connected between the second-level cross column (35) and the first-level cross column (33). A pressure stabilizing cavity (55) is provided inside the air delivery pipe (48).

7. A cross-country telescopic forklift with a quick-change fork carriage according to claim 6, characterized in that: The first-level positioning plate (28) includes a housing. A cavity is provided inside the housing. A second locking buckle (43) is installed in the cavity. The second locking buckle (43) moves inside the first-level circular positioning hole (29). A piston plate (42) is provided outside the second locking buckle (43). A high-pressure cavity is provided between the piston plate (42) and the second locking buckle (43). A return spring (44) is connected between the piston plate (42) and the inner wall of the housing. A connecting pipe (45) is connected to the outside of the housing. The connecting pipe (45) is internally communicated with the pressure stabilizing cavity (55).

8. A cross-country telescopic forklift with a quick-change fork carriage according to claim 7, characterized in that: An outer air pipe (49) is movably connected to the outside of the second-level cross column (35). A protruding air bag hole (50) is provided inside the fork shovel. A cavity is provided inside the fork shovel. The cavity is connected in an inserted manner with the outer air pipe (49). When the cavity is inflated, the protruding air bag hole (50) will protrude to increase friction.

9. A cross-country telescopic forklift with a quick-change fork carriage according to claim 8, characterized in that: The boom assembly (12) includes a boom support (16). The boom support (16) is fixedly connected to the off-road forklift (11). A boom (14) is hinged on the boom support (16). A hydraulic support rod (15) is fixedly connected between the boom (14) and the boom support (16). The output end of the boom (14) is fixedly connected to a forearm mounting frame assembly (17). The end of the forearm mounting frame assembly (17) is connected to the boom assembly (12) through the first locking buckle (36).

10. A cross-country telescopic forklift with a quick-change fork carrier according to claim 8, characterized in that: The structure of the second-level positioning plate (30) is the same as that of the first-level positioning plate (28). The inside of the second-level positioning plate (30) is internally communicated with the inside of the pressure stabilizing cavity (55). The hydraulic pressure inside the pressure stabilizing cavity (55) pushes the second locking buckle (43) provided on the second-level positioning plate (30) and the first-level positioning plate (28) to realize locking connection with the connection assembly (19).

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