Protective plate for bolt on short arm

Abstract

The utility model discloses a protective plate for a bolt on a short arm, which relates to the technical field of protective plates for bolts on short arms, and comprises a base, specifically, a first groove is formed in the top of the base, the first groove is square and is positioned in the center of the base, and a second groove is formed in the inner bottom wall of the first groove; the second groove is square and located in the center of the first groove, the size of the second groove is smaller than that of the first groove, four square first clamping grooves and four second clamping grooves are formed in the inner bottom wall of the first groove, and the first clamping grooves are located in the front side and the rear side of the second groove respectively and evenly distributed in the four corners of the second groove. The number of the second clamping grooves is four, the second clamping grooves are located in the left side and the right side of the second groove respectively and evenly distributed in the four corners of the second groove, and sliding grooves are formed in the inner walls of the left side and the right side of the first groove.

Description

Technical Field

[0001] The utility model relates to the technical field of protection plates for bolts on short arms, and specifically relates to a protection plate for bolts on short arms. Background Technique

[0002] As a core component of a crane, the telescopic boom is the most important load-bearing structural member during the lifting operation of the crane. The weight, strength, stiffness, telescopic efficiency, and working stability and reliability of the telescopic boom will directly affect the performance of truck crane products. Through technological innovation of the telescopic boom, improving the lifting capacity, lifting height, lifting distance, and telescopic efficiency of the telescopic boom is the goal constantly pursued by each crane manufacturer.

[0003] In a crane with a crane boom disclosed in the Chinese Utility Model Patent Application Publication Specification CN213707505U, although the problem of not being able to adapt to the lifting of various items is solved, the crane with the crane boom still has the following disadvantages: First, due to the problem that the bolts on the short arm need to be regularly inspected, the protection plate needs to be disassembled, and the disassembly is rather troublesome and time-consuming; Second, when the position where the short arm of the crane lifts an item is relatively high, since the item will collide with the short arm or the long arm during movement, the short arm body will vibrate. With multiple vibrations of the short arm, the bolts fastened on the short arm will become loose. If not discovered in time, accidents such as the falling of goods will occur. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a protection plate for bolts on a short arm, which solves the problems put forward in the above background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: A protection plate for bolts on a short arm includes a base. A first groove is opened at the top of the base. The first groove is square and located at the center of the base. A second groove is opened on the inner bottom wall of the first groove. The second groove is square and located at the center of the first groove. The size of the second groove is smaller than that of the first groove. First slots and second slots are opened on the inner bottom wall of the first groove. The first slots are square and there are four of them. The first slots are respectively located on the front and back sides of the second groove and are evenly distributed at the four corners of the second groove. The second slots are circular and there are four of them. The second slots are respectively located on the left and right sides of the second groove and are evenly distributed at the four corners of the second groove. Slide grooves are opened on the inner side walls on the left and right sides of the first groove.

[0008] Optionally, the sliding groove is T-shaped, and a baffle is slidably connected to the inner wall of the sliding groove. The shape and size of the baffle are the same as those of the sliding groove. The inner bottom wall of the sliding groove and the top of the baffle are both provided with fourth card slots, and the fourth card slots penetrate through the baffle. The fourth card slots are circular and there are two groups, and there are two fourth card slots in one group.

[0009] Optionally, one group of fourth card slots corresponds to one sliding groove, and one group of fourth card slots is symmetrically arranged front and back with respect to the sliding groove. The inner bottom wall of the sliding groove is higher than the inner bottom wall of the first groove. The size of the fourth card slot is the same as that of the second card slot. A fixing rod is arranged inside the fourth card slot, and the fixing rod is slidably connected to both the fourth card slot and the second card slot.

[0010] Optionally, a fixing plate is provided at the top of the inner bottom wall of the second groove. Threaded holes are provided on the top of the fixing plate and the inner bottom wall of the second groove, and the threaded holes penetrate through the fixing plate. A fixing bolt is threadedly connected to the inner wall of the threaded hole, and the fixing bolt is located on the top of the fixing plate. The size and shape of the fixing plate are the same as those of the second groove. There are four fixing bolts, and they are evenly distributed at the four corners of the second groove.

[0011] Optionally, a second clamping block is slidably connected to the inner wall of the first card slot. The size and shape of the second clamping block are the same as those of the first card slot. A protective plate is fixedly connected to the top of the second clamping block. The top of the protective plate is flush with the bottom of the baffle. A first clamping block is fixedly connected to the bottom of the protective plate. The first clamping block is located directly above the fixing bolt. A third card slot is provided at the bottom of the first clamping block. The size and shape of the third card slot are the same as those of the top end of the fixing bolt. There are four protective plates, and they correspond to the fixing bolts one by one. The material of the protective plate is rubber.

[0012] Optionally, a short arm is fixedly connected to the center of the top of the fixing plate. A long arm is fixedly connected to the end of the short arm away from the fixing plate. Rotating plates are rotatably connected to the front and back sides of the end of the long arm away from the short arm. A wire harness reel is arranged inside the rotating plate. The wire harness reel is located on the right side of the long arm. A cable is arranged at the outer end of the wire harness reel. A motor is fixedly installed on the front surface of the front rotating plate, and the motor is in transmission connection with the wire harness reel.

[0013] (III) Beneficial Effects

[0014] The utility model provides a protective plate for bolts on a short arm, which has the following beneficial effects:

[0015] 1. The protective plate for the bolt on the short arm, through the setting that the fixed rod is slidably connected to both the fourth card slot and the second card slot, enables the protective plate for the bolt on the short arm to have the effect of fixing the baffle plate, thereby making the protective plate immovable. Through the cooperative setting of the baffle plate, the chute and the fixed rod, during the use process, the protective plate can be quickly exposed by sliding inside the chute, thus playing a role in facilitating the disassembly of the protective plate and achieving the purpose of saving time.

[0016] 2. The protective plate for the bolt on the short arm, through the setting that the material of the protective plate is rubber, enables the protective plate for the bolt on the short arm to have the effect of reducing the vibration transmitted to the fixed bolt. Through the cooperative setting of the first clamping block and the second clamping block, during the use process, the fixed bolt cannot rotate, thereby playing a role in strengthening the fixed bolt and achieving the purpose of preventing the fixed bolt from loosening due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Three-dimensional schematic diagram of the whole of the present utility model;

[0018] Figure 2 Three-dimensional schematic diagram inside the first groove of the present utility model;

[0019] Figure 3 Schematic diagram of the top of the fixed bolt of the present utility model;

[0020] Figure 4 Three-dimensional schematic diagram of the baffle plate of the present utility model;

[0021] Figure 5 Three-dimensional schematic diagram of the third card slot of the present utility model.

[0022] In the figure: 1. Base; 2. First groove; 3. Second groove; 4. Fixed plate; 5. Fixed bolt; 6. Short arm; 7. Long arm; 8. Rotating plate; 9. Wire harness reel; 10. Cable; 11. Motor; 12. First card slot; 13. Second card slot; 14. Protective plate; 15. Fixed rod; 16. Baffle plate; 17. Chute; 18. First clamping block; 19. Third card slot; 20. Second clamping block; 21. Fourth card slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] Embodiment 1:

[0025] Please refer to Figures 1 to 4, the present utility model provides a technical solution: a protective plate for bolts on a short arm, including a base 1. A first groove 2 is formed in the top of the base 1. The first groove 2 is square and located at the center of the base 1. A second groove 3 is formed in the inner bottom wall of the first groove 2. The second groove 3 is square and located at the center of the first groove 2. The size of the second groove 3 is smaller than that of the first groove 2. A first card slot 12 and a second card slot 13 are formed in the inner bottom wall of the first groove 2. The first card slot 12 is square and there are four of them. The first card slots 12 are respectively located on the front and back sides of the second groove 3 and are evenly distributed at the four corners of the second groove 3. The second card slot 13 is circular and there are four of them. The second card slots 13 are respectively located on the left and right sides of the second groove 3 and are evenly distributed at the four corners of the second groove 3. Slide grooves 17 are formed in the inner walls on the left and right sides of the first groove 2. The slide grooves 17 are T-shaped. A baffle 16 is slidably connected to the inner wall of the slide grooves 17. The shape and size of the baffle 16 are the same as those of the slide grooves 17. Fourth card slots 21 are formed in the inner bottom wall of the slide grooves 17 and the top of the baffle 16. The fourth card slots 21 penetrate through the baffle 16. The fourth card slots 21 are circular and there are two groups. One group of the fourth card slots 21 has two. One group of the fourth card slots 21 corresponds to one slide groove 17. One group of the fourth card slots 21 is symmetric about the front and back with the slide groove 17. The inner bottom wall of the slide groove 17 is higher than the inner bottom wall of the first groove 2. The size of the fourth card slot 21 is the same as that of the second card slot 13. A fixing rod 15 is arranged inside the fourth card slot 21. The fixing rod 15 is slidably connected to the fourth card slot 21 and the second card slot 13.

[0026] During use, due to the problem that the bolts on the short arm 6 need to be regularly inspected, the protective plate 14 needs to be disassembled, but the disassembly is rather troublesome and time-consuming. Therefore, there is a protective plate for bolts on a short arm. When the protective plate 14 needs to be disassembled to check the fixing bolts 5, at this time, the fixing rod 15 is inside the second card slot 13. First, the fixing rod 15 is pulled out from the second card slot 13, and then the baffle 16 is moved from the inside to the left and right outside along the slide groove 17. When the baffle 16 completely enters the inside of the slide groove 17, the fourth card slot 21 on the top of the baffle 16 is aligned with the fourth card slot 21 on the inner bottom wall of the slide groove 17 in the Y-axis direction. Subsequently, the fixing rod 15 is inserted into the fourth card slot 21 to fix the baffle 16 inside the slide groove 17. Through the cooperative setting of the fixing rod 15 with the second card slot 13 and the fourth card slot 21, it plays a role in facilitating the disassembly of the protective plate 14 and achieves the purpose of saving time. At this time, the top of the protective plate 14 is exposed. The second block 20 is slid upward in the first card slot 12, so that the protective plate 14 and the first block 18 move upward, and the disassembly of the protective plate 14 is completed.

[0027] Embodiment 2:

[0028] Please refer to Figures 1 to 5, the present utility model provides a technical solution: a protective plate for bolts on a short arm. At the top of the inner bottom wall of the second groove 3, there is a fixing plate 4. Threaded holes are provided at the top of the fixing plate 4 and the inner bottom wall of the second groove 3, and the threaded holes penetrate through the fixing plate 4. A fixing bolt 5 is threadedly connected to the inner wall of the threaded hole and the fixing bolt 5 is located at the top of the fixing plate 4. The size and shape of the fixing plate 4 are the same as those of the second groove 3. There are four fixing bolts 5 and they are evenly distributed at the four corners of the second groove 3. A second clamping block 20 is slidably connected to the inner wall of the first clamping groove 12. The size and shape of the second clamping block 20 are the same as those of the first clamping groove 12. The top of the second clamping block 20 is fixedly connected to a protective plate 14. The top of the protective plate 14 is flush with the bottom of the baffle 16. The bottom of the protective plate 14 is fixedly connected to a first clamping block 18. The first clamping block 18 is located directly above the fixing bolt 5. A third clamping groove 19 is provided at the bottom of the first clamping block 18. The size and shape of the third clamping groove 19 are the same as the top end of the fixing bolt 5. There are four protective plates 14 and they correspond to the fixing bolts 5 one by one. The material of the protective plate 14 is rubber. The center of the top of the fixing plate 4 is fixedly connected to a short arm 6. One end of the short arm 6 away from the fixing plate 4 is fixedly connected to a long arm 7. The front and rear sides of one end of the long arm 7 away from the short arm 6 are rotatably connected to the inner side of a rotating plate 8, and a wire harness reel 9 is provided. The wire harness reel 9 is located on the right side of the long arm 7. A cable 10 is provided at the outer end of the wire harness reel 9. A motor 11 is fixedly installed on the front surface of the front rotating plate 8. The motor 11 is in transmission connection with the wire harness reel 9.

[0029] During use, when the position where the crane short arm 6 lifts an object is relatively high, since the object will collide with the short arm 6 or the long arm 7 when moving, the short arm 6 body will vibrate. With the short arm 6 vibrating multiple times, the bolts fastened on the short arm 6 may become loose. If not discovered in time, accidents such as the falling of goods may occur. Therefore, there is a protective plate for bolts on the short arm. When the crane short arm 6 is in normal use, through the cooperative setting of the second clamping block 20 and the first clamping groove 12, the protective plate 14 and the first clamping block 18 can be prevented from shaking. Through the setting that a third clamping groove 19 is provided at the bottom of the first clamping block 18 and the size and shape of the third clamping groove 19 are the same as the top end of the fixing bolt 5, the fixing bolt 5 and the first clamping block 18 can be fixed together to prevent the fixing bolt 5 from becoming loose due to vibration. Through the setting that the material of the protective plate 14 is rubber, the vibration force transmitted from the short arm 6 can be reduced, and the vibration received by the fixing bolt 5 can be reduced.

[0030] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent replacements or changes should be covered within the protection scope of the present utility model.

Claims

1. A protective plate for bolts on the short arm, comprising a base (1), characterized in that: A first groove (2) is formed at the top of the base (1). The first groove (2) is square and located at the center of the base (1). A second groove (3) is formed in the inner bottom wall of the first groove (2). The second groove (3) is square and located at the center of the first groove (2). The size of the second groove (3) is smaller than that of the first groove (2). A first clamping groove (12) and a second clamping groove (13) are formed in the inner bottom wall of the first groove (2). The first clamping groove (12) is square and there are four of them. The first clamping grooves (12) are respectively located on the front and rear sides of the second groove (3) and are evenly distributed at the four corners of the second groove (3). The second clamping groove (13) is circular and there are four of them. The second clamping grooves (13) are respectively located on the left and right sides of the second groove (3) and are evenly distributed at the four corners of the second groove (3). Slide grooves (17) are formed in the inner walls on the left and right sides of the first groove (2).

2. The protective plate for the bolt on the short arm according to claim 1, characterized in that: The slide groove (17) is T-shaped. A baffle (16) is slidably connected to the inner wall of the slide groove (17). The shape and size of the baffle (16) are the same as those of the slide groove (17). Fourth clamping grooves (21) are formed in the inner bottom wall of the slide groove (17) and the top of the baffle (16). The fourth clamping grooves (21) penetrate through the baffle (16). The fourth clamping grooves (21) are circular and there are two groups. One group of the fourth clamping grooves (21) has two.

3. The protective plate for the bolt on the short arm according to claim 2, characterized in that: One group of the fourth clamping grooves (21) corresponds to one slide groove (17). One group of the fourth clamping grooves (21) is symmetrically arranged in the front and rear with respect to the slide groove (17). The inner bottom wall of the slide groove (17) is higher than the inner bottom wall of the first groove (2). The size of the fourth clamping groove (21) is the same as that of the second clamping groove (13). A fixing rod (15) is arranged inside the fourth clamping groove (21). The fixing rod (15) is slidably connected to the fourth clamping groove (21) and the second clamping groove (13).

4. A protective plate for bolts on a short arm according to claim 1, characterized in that: A fixing plate (4) is arranged at the top of the inner bottom wall of the second groove (3). Threaded holes are formed in the top of the fixing plate (4) and the inner bottom wall of the second groove (3), and the threaded holes penetrate through the fixing plate (4). A fixing bolt (5) is threadedly connected to the inner wall of the threaded hole and the fixing bolt (5) is located at the top of the fixing plate (4). The size and shape of the fixing plate (4) are the same as those of the second groove (3). There are four fixing bolts (5) and they are evenly distributed at the four corners of the second groove (3).

5. A protective plate for a bolt on a short arm according to claim 4, characterized in that: A second clamping block (20) is slidably connected to the inner wall of the first clamping groove (12). The size and shape of the second clamping block (20) are the same as those of the first clamping groove (12). A protective plate (14) is fixedly connected to the top of the second clamping block (20). The top of the protective plate (14) is flush with the bottom of the baffle (16). A first clamping block (18) is fixedly connected to the bottom of the protective plate (14). The first clamping block (18) is located directly above the fixing bolt (5). A third clamping groove (19) is formed in the bottom of the first clamping block (18). The size and shape of the third clamping groove (19) are the same as those of the top end of the fixing bolt (5). There are four protective plates (14), which correspond to the fixing bolts (5) one by one. The protective plate (14) is made of rubber.

6. A protective plate for bolts on a short arm according to claim 4, characterized in that: A short arm (6) is fixedly connected to the center of the top of the fixing plate (4). One end of the short arm (6) far from the fixing plate (4) is fixedly connected to a long arm (7). Rotating plates (8) are rotatably connected to both the front and rear sides of one end of the long arm (7) far from the short arm (6). A wire harness reel (9) is arranged inside the rotating plate (8). The wire harness reel (9) is located on the right side of the long arm (7). A cable (10) is arranged at the outer end of the wire harness reel (9). A motor (11) is fixedly installed on the front surface of the front rotating plate (8). The motor (11) is in driving connection with the wire harness reel (9).

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