Telescopic hydraulic folding arm for crane

Abstract

The utility model discloses a telescopic hydraulic folding arm for a crane, which is applied to the field of folding arms of cranes and comprises a base assembly, a tower body assembly is arranged at the top of the base assembly, a first arm frame assembly is rotatably connected to the top of the tower body assembly, and when the telescopic hydraulic folding arm for the crane is continuously used and a second arm frame assembly extends out and is unfolded, the second arm frame assembly is rotatably connected to the tower body assembly. The first plate body, the second plate body and the third plate body are gradually far away from each other, so that the first inner rod moves in the outer rod, the second inner rod moves in the first inner rod, the third inner rod is stored in the second inner rod to move, and in the moving process of the first inner rod, the second inner rod and the second inner rod, the length of the first inner rod, the second inner rod and the second inner rod is larger than the extending length of each section of a second arm support assembly. By means of the arrangement, the bearing effect of the hook end arm component of the second arm frame assembly can be improved conveniently, the gravity of the second arm frame assembly body on the hook end arm component of the second arm frame assembly is dispersed, the bearing range of the folding arm when the folding arm completely stretches out can be enlarged, and the breaking limit is improved.

Description

Technical Field

[0001] The utility model belongs to the field of crane folding arms, in particular to a telescopic hydraulic folding arm for a crane. Background Art

[0002] A crane refers to a multi-action lifting machinery that can vertically lift and horizontally carry heavy objects within a certain range. It is also called an overhead crane, an overhead crane, or a crane. It is more common in various construction units, engineering construction, road rescue and other fields. The telescopic arm of a crane is an assembly of devices that drives the lifting rope to the highest point of the crane. The telescopic arm achieves a higher position movement effect through corresponding transmission devices and stabilizing devices. It is an indispensable and most important part of the crane. However, there is a major problem with the current folding arms. The farther the arm at the hook end is extended, the smaller the limit of the weight that can be weighed. The folding arm after extension is prone to breakage, which undoubtedly reduces the current lifting range of the folding arm of the crane. Utility Model Content

[0003] The utility model aims to provide a telescopic hydraulic folding arm for a crane, which has the advantages of being convenient for load-bearing effect, achieving gravity dispersion and improving the function of breaking limit.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A telescopic hydraulic folding arm for a crane comprises a base assembly, a tower assembly is arranged on the top of the base assembly, a first arm assembly is rotatably connected to the top of the tower assembly, and a second arm assembly is rotatably connected to one end of the first arm assembly;

[0006] The arm bracket assembly 2 includes plate body 1, plate body 2 and plate body 3, one side of the plate body 1 is provided with an outer rod located at the top of the arm bracket assembly 2, one side of the plate body 1 is fixedly installed with an inner rod 1 that penetrates into the inner part of the outer rod, one side of the plate body 2 is fixedly installed with an inner rod 2 that penetrates through plate body 1 to the inner part of the inner rod 1, and one side of the plate body 3 is fixedly installed with an inner rod 3 that penetrates through plate body 2 to the inner part of the inner rod 2.

[0007] The above technical solution is adopted: when the telescopic hydraulic folding arm of the crane continues to be used, the slewing mechanism cooperates with the base assembly and the tower assembly to adjust the angle, and the angle mark cooperates with the pointer to quickly identify the angle of the boom assembly, and the pull rod assembly and the push rod assembly cooperate with the boom assembly and the boom assembly to expand and retract, wherein the slewing mechanism, the pull rod assembly, the push rod assembly and the lifting mechanism are all mature technologies of the existing folding arm. When the boom assembly is extended and expanded, the plate body one, the plate body two and the plate body three gradually move away from each other, so that the inner rod one moves inside the outer rod, and the inner rod two moves inside the inner rod. The inner rod one moves inside, and the inner rod three is stored in the inner rod two and moves. During the movement of the inner rod one, the inner rod two and the inner rod three, their own length is longer than the length of each extended section of the arm frame two assembly. Therefore, the inner rod one is not completely separated from the inner rod one, the inner rod two is not completely separated from the inner rod one, and the inner rod three is not completely separated from the inner rod two. This arrangement facilitates the improvement of the load-bearing effect of the arm component at the hook end of the arm frame two assembly, and realizes the dispersion of the gravity of the arm component at the hook end of the arm frame two assembly by the main body of the arm frame two assembly, which can increase the load-bearing range of the folding arm when the folding arm is fully extended, and improves the breaking limit.

[0008] The utility model is further configured that a rotary mechanism is fixedly connected between the base assembly and the tower body assembly.

[0009] The above technical solution is adopted: the angle adjustment is performed between the base assembly and the tower body assembly through the slewing mechanism.

[0010] The utility model is further configured that a pointer is rotatably provided on one side of the arm support assembly, and an angle mark is installed on the side wall of the arm support assembly around the pointer.

[0011] By adopting the above technical solution, the rotation angle of the boom assembly can be quickly identified through the cooperation of the angle mark and the pointer.

[0012] The utility model is further configured that the arm support first assembly and the arm support second assembly are rotatably connected with a pull rod assembly and a push rod assembly.

[0013] The above technical solution is adopted: the arm frame first assembly and the arm frame second assembly are expanded and retracted by cooperating with the pull rod assembly and the push rod assembly.

[0014] The utility model is further configured that a lifting mechanism assembly is installed at the bottom of the second arm assembly, a rope body is connected to the inner side of the lifting mechanism assembly, and a hook is fixedly installed at one end of the rope body.

[0015] The above technical solution is adopted: the operation of the lifting mechanism assembly will cooperate with the rope body for collection and use, thereby realizing the lifting of the hook.

[0016] The utility model is further configured that the surface of the outer rod is fixedly sleeved with a fixing ring fixedly connected to the top of the second arm assembly.

[0017] The above technical solution is adopted: the fixing ring is used in conjunction with the outer rod for fixing.

[0018] The utility model is further configured such that the interior of the outer rod is provided with an inner groove one for fitting and accommodating the inner rod one, the interior of the inner rod one is provided with an inner groove two for fitting and accommodating the inner rod two, and the interior of the inner rod two is provided with an inner groove three for fitting and accommodating the inner rod three.

[0019] The above technical solution is adopted: inner groove one cooperates with inner rod one to penetrate into the inner rod one, inner groove two cooperates with inner rod two to penetrate into the inner rod one, and inner groove three cooperates with inner rod three to penetrate into the inner rod two.

[0020] The utility model is further configured that a positioning rod is fixedly installed inside the outer rod and penetrates into the inner rods one, two and three, and an inner groove four is opened inside the inner rod three to cooperate with the positioning rod to penetrate and accommodate it.

[0021] The above technical solution is adopted: the positioning rod is used in conjunction with the inner rod one, the inner rod two and the inner rod three for penetration positioning, and the inner groove four cooperates with the positioning rod to penetrate into the inner rod three.

[0022] In summary, the utility model has the following beneficial effects:

[0023] When the utility model continues to use the telescopic hydraulic folding arm of the crane, when the boom assembly No. 2 is extended and unfolded, the plate body No. 1, the plate body No. 2 and the plate body No. 3 gradually move away from each other, so that the inner rod No. 1 moves inside the outer rod, the inner rod No. 2 moves inside the inner rod No. 1, and the inner rod No. 3 is stored in the inner rod No. 2 and moves. During the movement of the inner rod No. 1, the inner rod No. 2 and the inner rod No. 3, their own lengths are longer than the extended lengths of each section of the boom assembly No. 2. This arrangement facilitates the improvement of the load-bearing effect of the arm component at the hook end of the boom assembly, realizes the dispersion of the gravity of the arm component at the hook end of the boom assembly by the main body of the boom assembly No. 2, and can increase the load-bearing range of the folding arm when the folding arm is fully extended, and increases the breaking limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a front view schematic diagram of the utility model;

[0026] Figure 3 It is an enlarged schematic diagram of the front view and section of the outer rod of the utility model.

[0027] Figure numerals: 1. base assembly; 2. slewing mechanism; 3. tower assembly; 4. pointer; 5. boom assembly 1; 6. angle mark; 7. pull rod assembly; 8. push rod assembly; 9. lifting mechanism assembly; 901. hook; 902. rope body; 10. boom assembly 2; 1001. plate body 1; 1002. plate body 2; 1003. plate body 3; 1004. outer rod; 1005. fixing ring; 1006. inner rod 1; 1007. inner rod 2; 1008. inner rod 3; 1009. positioning rod; 1010. inner groove 1; 1011. inner groove 2; 1012. inner groove 3; 1013. inner groove 4. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] Example:

[0030] refer to Figure 1 , Figure 2 and Figure 3 A telescopic hydraulic folding arm for a crane comprises a base assembly 1, a tower body assembly 3 is arranged on the top of the base assembly 1, a boom assembly 1 5 is rotatably connected to the top of the tower body assembly 3, one end of the boom assembly 1 5 is rotatably connected to a boom assembly 2 10, the boom assembly 2 10 comprises a plate body 1 1001, a plate body 2 1002 and a plate body 3 1003, an outer rod 1004 located at the top of the boom assembly 2 10 is arranged on one side of the plate body 1001, an inner rod 1006 penetrating into the interior of the outer rod 1004 is fixedly installed on one side of the plate body 1001, an inner rod 2 1007 penetrating into the interior of the plate body 1001 to the interior of the inner rod 1 1006 is fixedly installed on one side of the plate body 2 1002, and an inner rod 3 1008 penetrating into the interior of the plate body 2 1002 to the interior of the inner rod 2 1007 is fixedly installed on one side of the plate body 3 1003.

[0031] When the telescopic hydraulic folding arm of the crane continues to be used, when the boom assembly 10 is extended and unfolded, the plate body 1 1001, the plate body 2 1002 and the plate body 3 1003 gradually move away from each other, so that the inner rod 1 1006 moves inside the outer rod 1004, the inner rod 2 1007 moves inside the inner rod 1 1006, and the inner rod 3 1008 is stored in the inner rod 2 1007 and moves. During the movement of the inner rod 1 1006, the inner rod 2 1007 and the inner rod 2 1007, their own length is longer than the extended length of each section of the boom assembly 10. This arrangement facilitates the improvement of the load-bearing effect of the hook end arm component of the boom assembly 10, and realizes the dispersion of the gravity of the hook end arm component of the boom assembly 10 by the main body of the boom assembly 10, which can increase the load-bearing range of the folding arm when the folding arm is fully extended, and improve the breaking limit.

[0032] refer to Figure 1A rotating mechanism 2 is fixedly connected between the base assembly 1 and the tower body assembly 3, and the angle between the base assembly 1 and the tower body assembly 3 is adjusted through the rotating mechanism 2.

[0033] refer to Figure 2 A pointer 4 is rotatably provided on one side of the boom assembly 5, and an angle mark 6 is installed on the side wall of the boom assembly 5 around the pointer 4. When the boom assembly 5 is horizontal, the pointer 4 is in a vertical downward state under the action of gravity, and the angle mark 6 pointing to 0 at this time. When the boom assembly 5 is lifted upward, the pointer 4 and the angle mark 6 rotate relative to each other. The upward angle of the boom assembly 5 can be quickly read through the angle mark 6. Since the maximum weight that the boom assembly 5 can lift at different angles is different, the hydraulic folding arm can be ensured to be used within a reasonable working range through observation.

[0034] refer to Figure 1 The arm assembly 1 5 and the arm assembly 2 10 are rotatably connected with a pull rod assembly 7 and a push rod assembly 8, and the arm assembly 1 5 and the arm assembly 2 10 are expanded and retracted through the pull rod assembly 7 and the push rod assembly 8.

[0035] refer to Figure 2 A lifting mechanism assembly 9 is installed at the bottom of the second arm assembly 10, and a rope body 902 is connected to the inner side of the lifting mechanism assembly 9. A hook 901 is fixedly installed at one end of the rope body 902. The operation of the lifting mechanism assembly 9 will cooperate with the rope body 902 for collection and use, thereby realizing the lifting of the hook 901.

[0036] refer to Figure 1 The surface of the outer rod 1004 is fixedly sleeved with a fixing ring 1005 fixedly connected to the top of the second arm assembly 10, and the fixing ring 1005 is used in conjunction with the outer rod 1004 for fixation.

[0037] refer to Figure 3 The outer rod 1004 has an inner groove 1010 inside for fitting and accommodating the inner rod 1006, the inner rod 1006 has an inner groove 1011 inside for fitting and accommodating the inner rod 2 1007, the inner rod 2 1007 has an inner groove 1012 inside for fitting and accommodating the inner rod 3 1008, the inner groove 1010 cooperates with the inner rod 1006 to penetrate into the outer rod 1004, the inner groove 2 1011 cooperates with the inner rod 2 1007 to penetrate into the inner rod 1 1006, and the inner groove 3 1012 cooperates with the inner rod 3 1008 to penetrate into the inner rod 2 1007.

[0038] refer to Figure 3A positioning rod 1009 is fixedly installed inside the outer rod 1004 and penetrates into the inner rods 1006, 1007 and 1008. An inner groove 4 1013 is provided inside the inner rod 1008 to cooperate with the positioning rod 1009 to penetrate and accommodate the inner rods 1006, 1007 and 1008. The positioning rod 1009 cooperates with the inner rods 1006, 1007 and 1008 to penetrate and position the inner rods. The inner groove 4 1013 cooperates with the positioning rod 1009 to penetrate into the inner rod 1008.

[0039] Brief description of the use process: When the telescopic hydraulic folding arm of the crane is continued to be used, the slewing mechanism 2 cooperates with the base assembly 1 and the tower assembly 3 to adjust the angle, the angle mark 6 cooperates with the pointer 4 to quickly identify the angle of the boom assembly 1 5, the pull rod assembly 7 and the push rod assembly 8 cooperate with the boom assembly 1 5 and the boom assembly 2 10 to expand and contract, and the operation of the lifting mechanism assembly 9 will cooperate with the rope body 902 for collection and use, so as to realize the lifting of the hook 901, wherein the slewing mechanism 2, the pull rod assembly 7, the push rod assembly 8 and the lifting mechanism are all existing mature technologies of folding arms;

[0040] When the second arm assembly 10 is extended and unfolded, the plate body 1 1001, the plate body 2 1002 and the plate body 3 1003 gradually move away from each other, so that the inner rod 1 1006 moves inside the outer rod 1004, the inner rod 2 1007 moves inside the inner rod 1 1006, and the inner rod 3 1008 is stored in the inner rod 2 1007 and moves. During the movement of the inner rod 1 1006, the inner rod 2 1007 and the inner rod 3 1008, their own length is longer than the extended length of each section of the second arm assembly 10. Therefore, the inner rod 1 1006 is not completely separated from the outer rod 1004, the inner rod 2 1007 is not completely separated from the inner rod 1 1006, and the inner rod 3 1008 is not completely separated from the inner rod 2 1007. This arrangement facilitates the improvement of the load-bearing effect of the hook end arm component of the boom assembly 10, and achieves the gravity dispersion of the hook end arm component of the boom assembly 10 by the main body of the boom assembly 10, which can increase the load-bearing range of the folding arm when it is fully folded and extended, and increases the breaking limit.

Claims

1. A telescopic hydraulic folding arm for a crane, comprising a base assembly (1), characterized in that: A tower body assembly (3) is provided on the top of the base assembly (1); the top of the tower body assembly (3) is rotatably connected to a first arm assembly (5); and one end of the first arm assembly (5) is rotatably connected to a second arm assembly (10); The arm support assembly (10) comprises a plate body one (1001), a plate body two (1002) and a plate body three (1003); one side of the plate body one (1001) is provided with an outer rod (1004) located at the top of the arm support assembly (10); one side of the plate body one (1001) is fixedly installed with an inner rod one (1006) penetrating into the interior of the outer rod (1004); one side of the plate body two (1002) is fixedly installed with an inner rod two (1007) penetrating from the plate body one (1001) to the interior of the inner rod one (1006); and one side of the plate body three (1003) is fixedly installed with an inner rod three (1008) penetrating from the plate body two (1002) to the interior of the inner rod two (1007).

2. The telescopic hydraulic folding arm for a crane according to claim 1, characterized in that: A rotating mechanism (2) is fixedly connected between the base assembly (1) and the tower body assembly (3).

3. The telescopic hydraulic folding arm for a crane according to claim 1, characterized in that: A pointer (4) is rotatably provided on one side of the arm support assembly (5), and an angle mark (6) is installed on the side wall of the arm support assembly (5) around the pointer (4).

4. The telescopic hydraulic folding arm for a crane according to claim 1, characterized in that: The arm support assembly (5) and the arm support assembly (10) are rotatably connected to each other via a pull rod assembly (7) and a push rod assembly (8).

5. The telescopic hydraulic folding arm for a crane according to claim 1, characterized in that: A lifting mechanism assembly (9) is installed at the bottom of the second arm assembly (10), a rope body (902) is connected to the inner side of the lifting mechanism assembly (9), and a hook (901) is fixedly installed at one end of the rope body (902).

6. The telescopic hydraulic folding arm for a crane according to claim 1, characterized in that: The surface of the outer rod (1004) is fixedly sleeved with a fixing ring (1005) fixedly connected to the top of the second arm assembly (10).

7. The telescopic hydraulic folding arm for a crane according to claim 1, characterized in that: The outer rod (1004) has an inner groove one (1010) inside for fitting and accommodating the inner rod one (1006), the inner rod one (1006) has an inner groove two (1011) inside for fitting and accommodating the inner rod two (1007), and the inner rod two (1007) has an inner groove three (1012) inside for fitting and accommodating the inner rod three (1008).

8. The telescopic hydraulic folding arm for a crane according to claim 1, characterized in that: A positioning rod (1009) is fixedly installed inside the outer rod (1004) and penetrates into the inner rod one (1006), the inner rod two (1007) and the inner rod three (1008), and an inner groove four (1013) is opened inside the inner rod three (1008) to cooperate with the positioning rod (1009) to penetrate and accommodate.

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