Telescopic hydraulic arm for crane

Abstract

The utility model discloses a telescopic hydraulic arm for a crane, and relates to the technical field of hoisting equipment, the telescopic hydraulic arm comprises a telescopic arm body and a fixing frame hinged to the telescopic arm body, a base is arranged below the fixing frame, the fixing frame is rotatably connected with the base, and the base is provided with a first driving part for driving the fixing frame to rotate; a light beam searchlight for displaying the extension length of the telescopic arm is arranged on the outer side of the telescopic arm body, the fixing frame is provided with a second driving piece for driving the telescopic arm body to rotate around the hinged position, and a hoisting assembly is arranged at the end, away from the fixing frame, of the telescopic part of the telescopic arm body. The extending length of the telescopic arm body is illuminated through the light beam searchlight arranged on the outer side wall of the telescopic arm body, so that a worker can observe the extending length of the telescopic arm body more at night, the worker can clearly know the movement track of the telescopic arm body, and the telescopic arm body can accurately hoist objects.

Description

Technical Field

[0001] This application relates to the field of lifting equipment technology, and in particular to telescopic hydraulic booms for cranes. Background Technology

[0002] A telescopic boom is a device that uses a hydraulic system to achieve its telescopic function, commonly found in various lifting machinery, excavators, construction machinery, and other equipment. Its basic principle is: hydraulic oil pressure drives a telescopic cylinder, thereby achieving the telescopic movement of the boom. A telescopic boom consists of a main boom and a telescopic mechanism, which typically comprises a telescopic cylinder, a telescopic rod, and a telescopic guide rail. When hydraulic oil enters the telescopic cylinder, the piston inside the cylinder pushes the telescopic rod to slide along the telescopic guide rail, thus changing the length of the boom.

[0003] Regarding the aforementioned technologies, the inventors believe that when cranes are operating at night, workers may misjudge the extension length of the crane's telescopic hydraulic arm, making it impossible for the telescopic hydraulic arm to accurately lift items. Utility Model Content

[0004] The purpose of this application is to provide a telescopic hydraulic boom for cranes to improve the problem that when cranes are operating at night, workers may misjudge the extension length of the telescopic hydraulic boom, making it impossible for the telescopic hydraulic boom to accurately lift items.

[0005] The telescopic hydraulic boom for cranes provided in this application adopts the following technical solution:

[0006] A telescopic hydraulic boom for a crane includes a telescopic boom body and a fixed frame hinged to the telescopic boom body. A base is provided below the fixed frame, and the fixed frame is rotatably connected to the base. The base is provided with a first drive component for driving the fixed frame to rotate. A beam searchlight for displaying the extension length of the telescopic boom is provided on the outside of the telescopic boom body. The fixed frame is provided with a second drive component for driving the telescopic boom body to rotate around the hinge. A lifting assembly is provided at the end of the telescopic part of the telescopic boom body away from the fixed frame.

[0007] By adopting the above technical solution, a rotating fixed frame is connected above the base. The fixed frame is driven to rotate by a drive component one set on the base, and the telescopic boom is driven to lift by a drive component two set on the fixed frame. This allows the telescopic boom to transfer the object to another location after it is lifted by the lifting assembly. The beam searchlight set on the outer wall of the telescopic boom illuminates the extension length of the telescopic boom, allowing workers to better observe the extension length of the telescopic boom at night. This enables workers to clearly see the movement trajectory of the telescopic boom and allows the telescopic boom to accurately lift objects.

[0008] Optionally, the beam searchlight is installed on the outer wall of the telescopic boom near the fixed frame, and the telescopic boom near the lifting assembly is provided with a refraction plate corresponding to the beam emitted by the beam searchlight.

[0009] By adopting the above technical solution, a refractive plate is set at the end of the telescopic arm that is far away from the fixed frame to refract the beam emitted by the beam searchlight and expand the range of the beam illuminating the telescopic arm.

[0010] Optionally, a mounting bracket is provided at one end of the telescopic arm near the fixed frame, and the mounting bracket has a fixing groove that is adapted to the outer wall of the beam searchlight.

[0011] By adopting the above technical solution, the beam searchlight is fixed in the fixed slot opened in the mounting frame, so that the beam of the beam searchlight can shine on the refraction plate along the outer wall of the telescopic boom, preventing the beam searchlight from deviating from the telescopic boom when the crane telescopic boom is working.

[0012] Optionally, the mounting bracket has fixing holes on both sides of the beam searchlight that communicate with the fixing groove. A sliding rod is slidably connected in the fixing hole. A top plate is provided at the end of the sliding rod near the beam searchlight, which abuts against the side wall of the beam searchlight. An elastic element is sleeved between the top plate and the inner side wall of the fixing groove on the sliding rod.

[0013] By adopting the above technical solution, a sliding rod is slidably connected in the fixing hole opened in the fixing groove, and a top plate is set at the end of the sliding rod near the beam searchlight. The elastic element sleeved on the sliding rod between the top plate and the fixing groove pushes the top plate against the beam searchlight to fix the beam searchlight and prevent the beam searchlight from falling out of the fixing groove of the mounting frame.

[0014] Optionally, one end of the top plate near the opening of the fixing groove is provided with an arc plate that fits against the outer wall of the beam searchlight.

[0015] By adopting the above technical solution, an arc plate is provided at one end of the top plate near the opening of the fixing slot. The arc plate fits against the outer wall of the beam detector, so that the beam searchlight can be directly inserted into the top plate of the fixing slot for fixing, which facilitates the inspection and replacement of the beam searchlight.

[0016] Optionally, a baffle is provided on the side of the top plate away from the inner wall of the fixing slot of the beam searchlight, and the baffle abuts against the beam searchlight.

[0017] By adopting the above technical solution, a baffle is set on the side of the top plate away from the inner wall of the fixing groove of the beam searchlight to further fix the beam searchlight and prevent it from sliding out of the fixing groove.

[0018] Optionally, the lifting assembly includes a connecting frame disposed at the end of the telescopic boom away from the fixed frame, a hook disposed below the connecting frame, a roller disposed at the end of the connecting frame and the hook near the connecting frame, a winch disposed at the end of the telescopic boom near the fixed frame, a cable wound around the winch and passing over the roller, and the end of the cable away from the winch being fixedly connected to the connecting frame.

[0019] By adopting the above technical solution, a hook is installed below the connecting frame. Rollers are rotatably connected to the connecting frame and the hook through bearings. The rollers on the connecting frame are fixed pulleys, and the pulleys on the hook are movable pulleys. The cable wound on the winch passes through the rollers on the connecting frame and the hook and is tied together with the connecting frame. The winch releases the cable, causing the rollers on the hook, which act as movable pulleys, to move the hook downwards. After the hook is securely connected to the object, the winch rewinds the cable to lift the object.

[0020] Optionally, the hook is electrically connected to the side wall of the connecting frame with an indicator light.

[0021] By adopting the above technical solution, indicator lights are bolted to the side walls of the hook and connecting frame. Workers can determine the moving position of the hook by the illumination of the indicator lights, while preventing the hook from hitting the workers during descent.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Rotate the fixed frame above the base. Drive the fixed frame and the telescopic boom to rotate through the drive component 1 set on the base. Drive the telescopic boom hinged to the fixed frame to lift by the drive component 2 set on the fixed frame. After the telescopic boom lifts the item, it can transfer the item to another position through the lifting assembly. The beam searchlight set on the outer wall of the telescopic boom illuminates the extension length of the telescopic boom, allowing workers to better observe the extension length of the telescopic boom at night. This allows workers to clearly see the movement trajectory of the telescopic boom and operate the telescopic boom to accurately lift the item.

[0024] 2. A refractive plate is installed at the end of the telescopic arm that is furthest from the fixed frame to block the beam of the beam searchlight and reduce the possibility of the beam directly shining on other workers at the work site; a sliding rod is slidably connected in the fixing hole opened in the fixing groove, and a top plate is installed at the end of the sliding rod near the beam searchlight. The elastic element sleeved on the sliding rod between the top plate and the fixing groove pushes the top plate against the beam searchlight to fix the beam searchlight and prevent the beam searchlight from falling out of the fixing groove of the mounting frame;

[0025] 3. An arc plate is provided at one end of the top plate near the opening of the fixing slot. The arc plate fits against the outer wall of the beam detector, allowing the beam spotlight to be directly inserted between the top plates of the fixing slot for fixing, which facilitates the inspection and replacement of the beam spotlight. A baffle is provided on the side of the top plate away from the inner wall of the fixing slot to further fix the beam spotlight and prevent it from sliding out of the fixing slot. Attached Figure Description

[0026] Figure 1 This is an overall schematic diagram of a telescopic hydraulic boom for a crane;

[0027] Figure 2 This is a partial cross-sectional view of the telescopic hydraulic arm in the embodiment;

[0028] Figure 3 yes Figure 2 A magnified view of part A in the middle.

[0029] In the diagram, 1. Telescopic boom; 11. Refractor; 12. Mounting frame; 121. Fixing groove; 122. Fixing hole; 13. Sliding rod; 14. Top plate; 141. Curved plate; 142. Baffle; 15. Elastic component; 2. Fixing frame; 21. Drive component two; 3. Base; 31. Drive component one; 4. Beam searchlight; 5. Lifting assembly; 51. Connecting frame; 511. Roller; 52. Hook; 53. Winch; 531. Cable; 54. Indicator light. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0031] For crane telescopic hydraulic booms, refer to Figure 1 and Figure 2 The system includes a telescopic boom 1 and a fixed frame 2 hinged to the telescopic boom 1. The main arm of the telescopic boom 1 is hinged to the fixed frame 2. A hydraulic cylinder connected to a power source in the main arm pushes the telescopic boom out of the main arm, causing the telescopic boom 1 to extend. A base 3 is provided below the fixed frame 2. The fixed frame 2 is rotatably connected to the base 3 via a rotating shaft and bearings. A drive component 31 is installed on the base 3. The drive component 31 is a drive motor connected to a power source. The drive end of the drive motor meshes with the rotating shaft below the fixed frame 2 through gears to drive the fixed frame 2 to rotate, causing the fixed frame 2 to rotate along with the telescopic boom 1, transferring the items lifted on the telescopic boom 1 to other positions. A second drive component 21 is provided on the fixed frame 2 to drive the telescopic boom 2 to rotate around the hinge. The second drive component 21 is a hydraulic cylinder connected to a power source. The cylinder body of the hydraulic cylinder is hinged to the fixed frame 2, and the drive rod of the hydraulic cylinder is hinged to the main arm of the telescopic boom 1. The hydraulic cylinder pushes the telescopic boom 1 to rotate around the fixed frame 2, causing the telescopic boom 2 to lift.

[0032] Reference Figure 2 and Figure 3 A mounting bracket 12 is welded to one end of the outer wall of the telescopic boom 1 near the fixed frame 2. A fixing groove 121 adapted to the beam searchlight 4 is provided on the mounting bracket 12, and the beam searchlight 4 is installed in the fixing groove 121. Fixing holes 122 are provided on the inner wall of the fixing groove 121 on both sides of the beam searchlight 4, and a sliding rod 13 is slidably disposed in the fixing holes 122. A top plate 14 is welded to the end of the sliding rod 13 near the beam searchlight 4, abutting against the beam searchlight 4. An elastic element 15 is sleeved on the sliding rod 13 between the top plate 14 and the inner wall of the fixing groove 121. 5 is a spring, which pushes the top plate 14 to abut against the beam searchlight 4, fixing the beam searchlight 4 in the fixing groove 121, reducing the possibility of the beam searchlight 4 falling off the telescopic boom 1 when the crane's telescopic hydraulic boom is working; a refraction plate 11 corresponding to the beam emitted by the beam searchlight 4 is fixed with bolts to the telescopic part of the telescopic boom 1 near the lifting assembly 5. The refraction plate 11, made of resin, refracts the beam emitted by the beam searchlight 4, expanding the range of the beam illuminating the telescopic boom 1, so that workers can see the approximate boundary of the telescopic boom 1 more clearly at night.

[0033] Reference Figure 2 and Figure 3 A baffle 142 integrally formed with the top plate 14 is provided on the side of the top plate 14 away from the inner wall of the beam searchlight 4 and the fixing groove 121. The baffle 142 is fixed to the position of the beam searchlight 4 and further reduces the possibility of the beam searchlight 4 sliding out between the top plates 14. At one end of the top plate 14 near the opening of the fixing groove 121, the curved plate 141 is integrally formed with the curved plate 141. The curved plate 141 fits against the outer wall of the beam detector, which makes it easy for the beam searchlight 4 to be inserted into the fixing groove 121 and fixed between the top plates 14, and makes it easy to inspect and replace the beam searchlight 4.

[0034] Reference Figure 1 and Figure 2A winch 53 with a lifting assembly 5 is installed at one end of the telescopic boom 1 near the fixed frame 2. A connecting frame 51 is welded to the telescopic part of the telescopic boom 1 away from the fixed frame 2. A hook 52 is installed below the connecting frame 51. Rollers 511 are rotatably connected to the connecting frame 51 and the hook 52 respectively through bearings. The rollers 511 on the connecting frame 51 are fixed pulleys, and the pulleys on the hook 52 are movable pulleys. A cable 531 wound on the winch 53 connects the connecting frame 51 and the hook 52. After the roller 511 on hook 52 is pulled over, it is tied to the connecting frame 51. The winch 53 releases the cable 531, causing the roller 511 on hook 52, which acts as a movable pulley, to move hook 52 downwards. After hook 52 is securely connected to the object, winch 53 rewinds the cable 531 to lift the object. An indicator light 54 is bolted to the side wall of hook 52 and connecting frame 51. A replaceable lithium battery is installed in the lamp holder of indicator light 54 to illuminate and indicate the moving position of hook 52.

[0035] The implementation principle of this application embodiment is as follows:

[0036] The beam searchlight 4 is installed in the fixing groove 121 of the mounting bracket 12. The top plate 14 in the fixing groove 121 is pushed by the elastic element 15 to abut against the beam searchlight 4, fixing the beam searchlight 4 in the fixing groove 121 and reducing the possibility of the beam searchlight 4 falling off the telescopic boom 1 when the crane's telescopic hydraulic boom is working. When the crane is working at night, the beam searchlight 4 is turned on, so that the beam of the beam searchlight 4 shines on the refraction plate 11 installed on the telescopic part of the crane's telescopic boom 1, illuminating the outer wall of the telescopic boom 1. When the telescopic part of the telescopic boom 1 extends through the hydraulic cylinder, the beam... The beam of searchlight 4 continues to illuminate the newly extended telescopic section, allowing workers to clearly see the extension distance of the crane's telescopic section and maintain a safe distance from the crane. The winch 53 releases cable 531, causing the roller 511 on the hook 52, acting as a movable pulley, to move the hook 52 downwards. After the hook 52 is securely connected to the object, the winch 53 rewinds cable 531 to lift the object. Indicator lights 54 on the side walls of the hook 52 and connecting frame 51 illuminate the movement position of the hook 52, enabling the telescopic boom 1 to accurately lift objects while preventing the hook 52 from hitting workers during its descent. The beam of light from the searchlight 4 on the outer wall of the telescopic boom 1 illuminates the extension length of the boom 1, allowing workers to better observe the extension length at night and clearly see the movement trajectory of the boom 1, thus enabling them to accurately lift objects.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A telescopic hydraulic arm for a crane, comprising a telescopic arm body (1) and a fixed frame (2) hinged to the telescopic arm body (1), characterized in that: The fixed frame (2) is provided below with a base (3), the fixed frame (2) is rotatably connected with the base (3), the base (3) is provided with a driving part one (31) for driving the fixed frame (2) to rotate, the telescopic arm body (1) is provided with a light beam searchlight (4) for displaying the telescopic arm extension length outside, the fixed frame (2) is provided with a driving part two (21) for driving the telescopic arm body (1) to rotate around the hinge, and one end of the telescopic part of the telescopic arm body (1) away from the fixed frame (2) is provided with a lifting assembly (5).

2. The telescopic hydraulic arm for cranes according to claim 1, characterized in that: The light beam searchlight (4) is arranged on the outer wall of one end of the telescopic arm body (1) close to the fixed frame (2), and the telescopic arm body (1) is provided with a refracting plate (11) corresponding to the light beam emitted by the light beam searchlight (4) at one end close to the lifting assembly (5).

3. A telescopic hydraulic arm for a crane according to claim 2, characterized in that: The telescopic arm body (1) is provided with a mounting frame (12) at one end close to the fixed frame (2), and the mounting frame (12) is provided with a fixing groove (121) matched with the outer wall of the light beam searchlight (4).

4. The telescopic hydraulic arm for cranes according to claim 3, characterized in that: The mounting frame (12) is provided with a fixing hole (122) communicated with the fixing groove (121) at both sides of the light beam searchlight (4), a sliding rod (13) is slidably connected in the fixing hole (122), one end of the sliding rod (13) close to the light beam searchlight (4) is provided with a top plate (14) abutting against the side wall of the light beam searchlight (4), and the sliding rod (13) is provided with an elastic element (15) between the top plate (14) and the inner wall of the fixing groove (121).

5. The telescopic hydraulic arm for cranes according to claim 4, characterized in that: One end of the top plate (14) close to the opening of the fixing groove (121) is provided with an arc plate (141) abutting against the outer wall of the light beam searchlight (4).

6. A telescopic hydraulic arm for a crane according to claim 5, characterized in that: The top plate (14) is provided with a baffle (142) on the side away from the inner wall of the fixing groove (121) of the light beam searchlight (4), and the baffle (142) abuts against the light beam searchlight (4).

7. The telescoping hydraulic arm for a crane of claim 1, wherein: The lifting assembly (5) comprises a connecting frame (51) arranged at one end of the telescopic arm body (1) away from the fixed frame (2), a lifting hook (52) arranged below the connecting frame (51), a roller (511) arranged at one end of the connecting frame (51) and the lifting hook (52) close to the connecting frame (51), a winch (53) arranged at one end of the telescopic arm body (1) close to the fixed frame (2), and a cable (531) wound around the roller (511) and arranged in the winch (53), and one end of the cable (531) away from the winch (53) is fixedly connected with the connecting frame (51).

8. A telescopic hydraulic arm for a crane according to claim 7, characterized in that: The lifting hook (52) and the side wall of the connecting frame (51) are provided with a display lamp (54).

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