Improved device for connecting suspension arms of rubber-tired crane

Abstract

The utility model provides an improved device for connecting a suspension arm of a rubber-tired crane, belongs to the technical field of crane accessories, and aims to solve the problems of long supply time of damaged spare parts and higher maintenance cost of the conventional arm support system. Comprising a first-section lifting arm, a middle-section lifting arm, a lifting arm connecting block seat, a lifting arm connecting block, a connecting block slot, a connecting block seat slot, a lifting arm connecting mechanism and a connecting alignment mechanism, the middle-section lifting arm is positioned on the right side of the first-section lifting arm; the suspension arm connecting block seat is fixedly connected to the right end surface of the first-section suspension arm; the suspension arm connecting block is fixedly connected to the left end face of the middle-section suspension arm; the connecting block slot is formed in the suspension arm connecting block; the connecting block seat slot is formed in the suspension arm connecting block seat; the suspension arm connecting mechanism is arranged on the inner end surfaces of the connecting block slot and the connecting block seat slot; and the connecting and aligning mechanism is arranged in the suspension arm connecting block seat. Through the suspension arm connecting mechanism, the safety of the equipment is improved, and through the connecting and aligning mechanism, a worker can conveniently connect and mount the suspension arm.

Description

Technical Field

[0001] The utility model belongs to the technical field of crane accessories, and more specifically, it particularly relates to an improved device for the connection of the boom of a tyre crane. Background Technique

[0002] When loading and unloading steel and general cargo at ports, tyre cranes are needed as the main equipment for land and train unloading of steel cargo. With the obvious trend of cargo enlargement, tyre cranes with a load of more than 50t have a high utilization rate. Cracking failures have occurred in their boom systems, and some that are severely damaged even need to be scrapped. Therefore, it is necessary to improve the connection of the crane boom.

[0003] According to CN201720153313.X, the utility model discloses a connection mechanism for a crane boom, which includes two sections of crane booms. Four groups of concave-convex joints are installed at the tail end of the boom by welding. A pin shaft is installed at the connection in the middle of the four groups of concave-convex joints through clearance fit. The tail end of the pin shaft is placed with a flat washer and fixed with a B-type split pin. The structure of the utility model is reasonable and convenient for disassembly and assembly. When the crane needs to replace the boom, only the B-type split pin needs to be loosened, the flat washer and the pin shaft at the middle connection of the concave-convex joint are taken out, and the two sections of the boom can be separated. During installation, only make the concave-convex joints fit and connect as required, then knock in the pin shaft according to the principle of clearance fit, place a flat washer at the tail end of the pin shaft, and finally fix it with a B-type split pin. The installation efficiency of the connection mechanism of the crane boom is high, safe and reliable, and the operation efficiency is improved.

[0004] Based on the above, the existing boom system consists of a first section, a middle section and a bottom section. The connection between the first section, the middle section and the bottom section is integrally welded. When the boom cracks, due to the integral welding of the boom, spare parts need to be replaced in time. However, the spare parts need to be manufactured and shipped from the manufacturer before replacement, resulting in a long spare part supply time and high maintenance costs, which leads to a long maintenance downtime and affects the normal and orderly progress of production. Moreover, the boom system is a key safety part. Once the structure breaks, it may lead to safety accidents. Summary of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides an improved device for the connection of the boom of a tyre crane, so as to solve the problem that the existing boom system consists of a first section, a middle section and a bottom section, and the connection between the first section, the middle section and the bottom section is integrally welded. When the boom cracks, due to the integral welding of the boom, spare parts need to be replaced in time. However, the spare parts need to be manufactured and shipped from the manufacturer before replacement, resulting in a long spare part supply time and high maintenance costs, which leads to a long maintenance downtime and affects the normal and orderly progress of production. Moreover, the boom system is a key safety part. Once the structure breaks, it may lead to safety accidents.

[0006] The purpose and efficacy of the improved device for the connection of the boom of a tire crane of the present utility model are achieved by the following specific technical means:

[0007] An improved device for the connection of the boom of a tire crane includes a first boom, a middle boom, a boom connecting block seat, a boom connecting block, a connecting block slot, a connecting block seat slot, a boom connection mechanism, and an alignment mechanism; the middle boom is located on the right side of the first boom; the boom connecting block seat is fixedly connected to the middle position of the right end face of the first boom; the boom connecting block is fixedly connected to the middle position of the left end face of the middle boom, and the boom connecting block is located on the inner end face of the boom connecting block seat; the connecting block slot is opened at the middle position of the boom connecting block; the connecting block seat slot is opened at the middle position of the boom connecting block seat; the boom connection mechanism is arranged on the inner end faces of the connecting block slot and the connecting block seat slot; there are two groups of alignment mechanisms, and the two groups of alignment mechanisms are respectively arranged on the front and rear sides inside the boom connecting block seat.

[0008] Furthermore, the boom connection mechanism includes: sliding bush A and sliding bush B; there are two groups of sliding bush A, and the two groups of sliding bush A are respectively rotatably connected to the front and rear sides of the inner end face of the boom connecting block seat, and the two groups of sliding bush A respectively rotate outside the connecting block seat slot; the sliding bush B is rotatably connected to the inner end face of the boom connecting block, and the sliding bush B is outside the connecting block slot.

[0009] Furthermore, the boom connection mechanism also includes: a connection pin and a pin stop block; the connection pin is inserted and connected to the inner end faces of the connecting block seat slot and the connecting block slot, and the connection pin is located on the inner end faces of the sliding bush A and the sliding bush B; the pin stop block is fixedly connected to the rear end face of the connection pin, and the pin stop block is located on the rear end face of the boom connecting block seat.

[0010] Furthermore, the boom connection mechanism also includes: a pin slot and an open split pin; the pin slot is opened on the front side of the connection pin; the open split pin is inserted into the pin slot.

[0011] Furthermore, the alignment mechanism includes: a positioning slider and a positioning spring; the positioning slider is slidably connected to the inside of the inner end face of the boom connecting block seat; there are multiple groups of positioning springs, and the multiple groups of positioning springs are respectively fixedly connected to the inside of the boom connecting block seat, and the multiple groups of positioning springs are respectively elastically connected to the outer end face of the positioning slider.

[0012] Furthermore, the alignment mechanism also includes: positioning rollers and positioning chutes; there are multiple groups of positioning rollers, and the multiple groups of positioning rollers are respectively rotatably connected to the inner end face of the positioning slider; the positioning chute is opened on the outer end face of the boom connecting block, and the positioning rollers rotate inside the positioning chute.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] The utility model realizes connecting the boom connecting block seat and the boom connecting block together by using a connecting pin shaft through a boom connecting mechanism, and then fixing the position of the connecting pin shaft through an opening split pin, so as to ensure the stable connection between the first boom and the middle boom. The structure of connecting the first boom and the middle boom by the connecting pin shaft is simple, convenient and reliable, reduces the occurrence of boom cracking faults, improves the work efficiency of maintenance, can quickly repair and replace the boom when the boom cracks, reduces the equipment maintenance downtime, improves the safety and reliability of the equipment itself, and reduces the occurrence of cargo or safety accidents.

[0015] The utility model realizes that when the connecting block slot and the connecting block seat slot are aligned when the boom connecting block seat and the boom connecting block are connected together by using a connecting and aligning mechanism, the positioning roller is clamped into the positioning chute, which can ensure the quick alignment of the connecting block slot and the connecting block seat slot, and is convenient for the staff to insert the connecting pin shaft into the connecting block slot and the connecting block seat slot, facilitating the connection and installation of the boom by the staff. Description of the Drawings

[0016] Figure 1 It is a front view structural schematic diagram of the boom connection improvement device of the utility model.

[0017] Figure 2 It is a rear view structural schematic diagram of the boom connection improvement device of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the boom connecting mechanism of the utility model.

[0019] Figure 4 It is a split structural schematic diagram of the boom connection improvement device of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the connecting and aligning mechanism of the utility model.

[0021] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows:

[0022] 1. First boom; 2. Middle boom; 3. Boom connecting block seat; 301. Sliding bushing A; 4. Boom connecting block; 401. Sliding bushing B; 5. Connecting block slot; 6. Connecting block seat slot; 7. Connecting pin shaft; 701. Pin shaft stop block; 702. Pin shaft slot; 8. Opening split pin; 9. Positioning slider; 901. Positioning spring; 902. Positioning roller; 10. Positioning chute. Detailed Embodiment

[0023] The following further describes the embodiments of the utility model in detail with reference to the drawings and embodiments.

[0024] Embodiment 1:

[0025] As attached Figure 1 to attached Figure 3 shown below:

[0026] The present utility model provides an improved device for the connection of the boom of a tyre crane, including a first boom 1, a middle boom 2, a boom connecting block seat 3, a boom connecting block 4, a connecting block slot 5, a connecting block seat slot 6 and a boom connection mechanism; the middle boom 2 is located on the right side of the first boom 1; the boom connecting block seat 3 is fixedly connected to the middle position of the right end face of the first boom 1; the boom connecting block 4 is fixedly connected to the middle position of the left end face of the middle boom 2, and the boom connecting block 4 is located on the inner end face of the boom connecting block seat 3; the connecting block slot 5 is opened at the middle position of the boom connecting block 4; the connecting block seat slot 6 is opened at the middle position of the boom connecting block seat 3; the boom connection mechanism is arranged on the inner end faces of the connecting block slot 5 and the connecting block seat slot 6.

[0027] Among them, the boom connection mechanism includes: a sliding bushing A 301 and a sliding bushing B 401; there are two groups of sliding bushings A 301, and the two groups of sliding bushings A 301 are respectively rotatably connected to the front and rear sides of the inner end face of the boom connecting block seat 3, and the two groups of sliding bushings A 301 are respectively rotated outside the connecting block seat slot 6; the sliding bushing B 401 is rotatably connected to the inner end face of the boom connecting block 4, and the sliding bushing B 401 is outside the connecting block slot 5. During use, the sliding bushing A 301 and the sliding bushing B 401 are respectively rotated outside the connecting block seat slot 6 and the connecting block slot 5.

[0028] Among them, the boom connection mechanism further includes: a connection pin 7 and a pin stop 701; the connection pin 7 is inserted and connected to the inner end faces of the connecting block seat slot 6 and the connecting block slot 5, and the connection pin 7 is located on the inner end faces of the sliding bushing A 301 and the sliding bushing B 401; the pin stop 701 is fixedly connected to the rear end face of the connection pin 7, and the pin stop 701 is located on the rear end face of the boom connecting block seat 3. During use, the boom connecting block 4 is placed on the inner end face of the boom connecting block seat 3, the connecting block seat slot 6 and the connecting block slot 5 are aligned, the connection pin 7 is inserted into the connecting block seat slot 6 and the connecting block slot 5, and the pin stop 701 is blocked on the rear end face of the boom connecting block seat 3.

[0029] Among them, the boom connection mechanism further includes: a pin slot 702 and an open split pin 8; the pin slot 702 is opened on the front side of the connection pin 7; the open split pin 8 is inserted into the pin slot 702. During use, the connection pin 7 extends from the front end face of the boom connecting block seat 3, the pin slot 702 is located on the front end face of the boom connecting block seat 3, the open split pin 8 is inserted into the pin slot 702, and then the bottom of the open split pin 8 is bent to fix the bottom of the open split pin 8 inside the pin slot 702, thereby connecting the first boom 1 and the middle boom 2.

[0030] The specific usage method and function of the first embodiment:

[0031] During use, the sliding bushing A301 and the sliding bushing B401 rotate outside the connecting block seat slot 6 and the connecting block slot 5 respectively. The boom connecting block 4 is placed on the inner end face of the boom connecting block seat 3. The connecting block seat slot 6 and the connecting block slot 5 are aligned. The connecting pin 7 is inserted into the connecting block seat slot 6 and the connecting block slot 5. The pin stop 701 blocks the rear end face of the boom connecting block seat 3. The connecting pin 7 extends from the front end face of the boom connecting block seat 3. The pin slot 702 is located on the front end face of the boom connecting block seat 3. The split pin 8 is inserted into the pin slot 702. Then, the bottom of the split pin 8 is bent to fix the bottom of the split pin 8 inside the pin slot 702, thereby connecting the first boom 1 and the middle boom 2, realizing the quick connection, disassembly, maintenance and replacement of the first boom 1 and the middle boom 2.

[0032] Embodiment 2:

[0033] Based on Embodiment 1, as shown in the attached Figure 4 and the attached Figure 5 shown:

[0034] The present utility model provides an improved device for connecting the booms of a tyre crane, which further includes a connection alignment mechanism. There are two sets of connection alignment mechanisms, which are respectively arranged on the front and rear sides inside the boom connecting block seat 3. The connection alignment mechanism includes: a positioning slider 9 and a positioning spring 901; the positioning slider 9 is slidably connected inside the inner end face of the boom connecting block seat 3; there are multiple sets of positioning springs 901, and multiple sets of positioning springs 901 are respectively fixedly connected inside the boom connecting block seat 3, and multiple sets of positioning springs 901 are elastically connected to the outer end face of the positioning slider 9. During use, when the boom connecting block 4 is inserted into the boom connecting block seat 3, it drives the positioning slider 9 to slide, and the sliding of the positioning slider 9 drives the positioning spring 901 to expand and contract.

[0035] Among them, the connection alignment mechanism further includes: positioning rollers 902 and positioning chutes 10; there are multiple sets of positioning rollers 902, and multiple sets of positioning rollers 902 are respectively rotatably connected to the inner end face of the positioning slider 9; the positioning chutes 10 are opened on the outer end face of the boom connecting block 4, and the positioning rollers 902 rotate inside the positioning chutes 10. During use, when the boom connecting block 4 and the boom connecting block seat 3 are aligned, the positioning rollers 902 are snapped into the positioning chutes 10. When the boom connecting block 4 and the boom connecting block seat 3 rotate, it drives the positioning rollers 902 to rotate inside the positioning chutes 10.

[0036] The specific usage method and function of this Embodiment 2:

[0037] During use, when the boom connection block 4 is inserted into the boom connection block seat 3, it drives the positioning slider 9 to slide. The sliding of the positioning slider 9 drives the positioning spring 901 to expand and contract. When the boom connection block 4 and the boom connection block seat 3 are aligned, the positioning roller 902 snaps into the positioning chute 10. When the boom connection block 4 and the boom connection block seat 3 rotate, it drives the positioning roller 902 to rotate inside the positioning chute 10, realizing the quick alignment and positioning of the connection block slot 5 and the connection block seat slot 6 conveniently.

Claims

1. An improved device for connecting a jib of a tire crane, comprising a first jib section (1), a middle jib section (2), a jib connecting block seat (3), a jib connecting block (4), a connecting block slot (5), a connecting block seat slot (6), a jib connecting mechanism and a connecting alignment mechanism; the middle jib section (2) is located on the right side of the first jib section (1); and is characterized in that: The boom connecting block seat (3) is fixedly connected to the middle position of the right end surface of the first boom section (1); the boom connecting block (4) is fixedly connected to the middle position of the left end surface of the middle boom section (2), and the boom connecting block (4) is located at the inner end surface of the boom connecting block seat (3); the connecting block slot (5) is arranged at the middle position of the boom connecting block (4); the connecting block seat slot (6) is arranged at the middle position of the boom connecting block seat (3); the boom connecting mechanism is arranged on the inner end surfaces of the connecting block slot (5) and the connecting block seat slot (6); and the connecting alignment mechanism is provided in two groups, and the two groups of connecting alignment mechanisms are respectively arranged at the front and rear sides inside the boom connecting block seat (3).

2. The improved device for connecting the jib of a tire crane as claimed in claim 1, characterized in that: The boom connection mechanism comprises: a sliding sleeve A (301) and a sliding sleeve B (401); the sliding sleeve A (301) is provided in two groups, the two groups of sliding sleeves A (301) are respectively rotatably connected to the front and rear sides of the inner end surface of the boom connecting block seat (3), and the two groups of sliding sleeves A (301) are respectively rotatably connected to the outside of the connecting block seat slot (6); the sliding sleeve B (401) is rotatably connected to the inner end surface of the boom connecting block (4), and the sliding sleeve B (401) is outside the connecting block slot (5).

3. The improved device for connecting the jib of a tire crane as claimed in claim 2, characterized in that: The boom connection mechanism further comprises: a connection pin (7) and a pin stopper (701); the connection pin (7) is plug-connected to the inner end surfaces of the connecting block seat slot (6) and the connecting block slot (5), and the connection pin (7) is located on the inner end surfaces of the sliding sleeve A (301) and the sliding sleeve B (401); the pin stopper (701) is fixedly connected to the rear end surface of the connection pin (7), and the pin stopper (701) is located on the rear end surface of the boom connecting block seat (3).

4. The improved device for connecting the jib of a tire crane as claimed in claim 3, characterized in that: The boom connection mechanism further comprises: a pin shaft slot (702) and an open bayonet pin (8); the pin shaft slot (702) is arranged on the front side of the connection pin shaft (7); and the open bayonet pin (8) is inserted into the pin shaft slot (702).

5. The improved device for connecting the jib of a tire crane as claimed in claim 1, characterized in that: The connection alignment mechanism comprises: a positioning slider (9) and a positioning spring (901); the positioning slider (9) is slidably connected to the inside of the inner end surface of the boom connecting block seat (3); a plurality of groups of positioning springs (901) are provided, the plurality of groups of positioning springs (901) are respectively fixedly connected to the inside of the boom connecting block seat (3), and the plurality of groups of positioning springs (901) are respectively elastically connected to the outer end surface of the positioning slider (9).

6. The improved device for connecting the jib of a tire crane as claimed in claim 5, characterized in that: The connection alignment mechanism also includes: a positioning roller (902) and a positioning slide groove (10); the positioning roller (902) is provided in a plurality of groups, and the plurality of groups of positioning rollers (902) are respectively rotatably connected to the inner end surface of the positioning slider (9); the positioning slide groove (10) is provided on the outer end surface of the boom connection block (4), and the positioning roller (902) rotates inside the positioning slide groove (10).

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