Novel crawler crane cab rotating device

Abstract

The utility model discloses a novel crawler crane cab rotating device, which comprises a crawler crane, a detection structure, a rectangular plate and a cab, and is characterized in that the detection structure is arranged, the output end of a first motor drives a rotating shaft to rotate, and an angle sensor can detect the rotating angle of the rotating shaft; when it is detected that the rotation angle of the cab exceeds the rotation angle of the transmission instruction, the feedback controller controls a second motor to operate, the output end of the second motor drives a two-way screw to rotate, and therefore the rotation angle of the cab is detected to be larger than the rotation angle of the transmission instruction. The two-way screw drives the clamping block to move, the transmission shaft is clamped and limited through the clamping block, and the situation that the rotating angle of the cab exceeds, and the accident risk is increased is avoided.

Description

Technical Field

[0001] The utility model relates to the relevant fields of crawler cranes, in particular to a novel crawler crane cab rotating device. Background Art

[0002] Crawler crane is a mobile jib crane equipped with a crawler running device. It consists of metal structures such as a boom and a turntable, as well as lifting, rotating, luffing and running mechanisms. The lifting and luffing mechanisms use steel ropes wrapped around drums, and the lifting device is raised and lowered and the boom is pitched and luffed through a complex pulley set.

[0003] Announcement No. CN202054541U discloses a "New Crawler Crane Cab Pitch Rotation Device," which includes a pitch rotation connection device and a slewing arm; the pitch rotation connection device is fixedly connected to the cab side panels and the columns of the slewing arm respectively; the pitch rotation connection device includes a bottom plate, an intermediate plate, and side plates; wherein the bottom plate is connected to the cab side panels, the side panels are fixedly connected to the intermediate plate, and the side panels, intermediate plate, and bottom plate are connected in sequence by a pin shaft. The structure is simple and compact, the connection is firm and reliable, the slewing arm is long, the pitching is convenient and stable, the operation is comfortable and stable, and even if the pitch cylinder is damaged or fails, the cab connection can be ensured to prevent tipping accidents, which is safe and reliable.

[0004] Although the above-mentioned novel crawler crane cab pitch rotation device has certain advantages in terms of slewing ability, it is not convenient to detect the rotation angle. The operator cannot accurately know the real-time rotation angle of the cab, which may lead to misoperation and increase the risk of accidents. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a novel crawler crane cab rotating device.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a new type of crawler crane cab rotation device, including a crawler crane, a detection structure, a rectangular plate and a cab, the detection structure is installed on the lower side of the crawler crane, the upper end surface of the detection structure is in contact with the rectangular plate, the upper end surface of the rectangular plate is installed with the cab, the detection structure includes a shell, a first motor, a rotating shaft, an angle sensor and a transmission structure, the inner lower side wall of the shell is installed with a first motor, the output end of the first motor is connected to the rotating shaft, an angle sensor is provided in the middle of the rotating shaft, and the angle sensor is installed on the inner lower side wall of the shell, and the left side of the rotating shaft is connected to the transmission structure.

[0007] Optionally, the transmission structure includes a transmission shaft, a first bevel gear, a second bevel gear and a limiting structure. The first bevel gear is mounted on the lower side of the transmission shaft, and the first bevel gear is meshed with the second bevel gear. A limiting structure is provided on the left side of the transmission shaft. The lower end of the transmission shaft is rotatably connected to the inner lower side wall of the outer shell through a bearing, and the upper end of the transmission shaft extends out of the outer shell and is fixedly connected to the rectangular plate.

[0008] Optionally, the limiting structure includes a mounting plate, a second motor, a bidirectional screw, a limiting rod and a clamping block, the second motor is installed on the left end face of the mounting plate, the output end of the second motor extends out of the mounting plate and is transmission-connected to the bidirectional screw, and the right end of the bidirectional screw is rotatably connected to the mounting plate through a bearing, the limiting rod is fixed on the rear side of the inner wall of the mounting plate, the left and right sides of the bidirectional screw and the limiting rod are respectively penetrated by clamping blocks, and the inner wall of the clamping block is threadedly connected to the bidirectional screw, and the upper end face of the mounting plate is fixedly connected to the inner wall of the outer shell.

[0009] Optionally, the diameters of the rotating shaft and the transmission shaft are consistent.

[0010] Optionally, the second bevel gear is sleeved on the left side of the rotating shaft.

[0011] Optionally, the bidirectional screw and the limiting rod are parallel to each other.

[0012] Optionally, the clamping surface of the clamping block matches the transmission shaft.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses a novel crawler crane cab rotation device. By setting a detection structure, the output end of the first motor drives the rotating shaft to rotate, and the angle sensor can detect the rotation angle of the rotating shaft, thereby comparing it with the rotation angle instruction transmitted by the cab, thereby achieving the effect of facilitating the detection of the rotation angle. When it is detected that the rotation angle of the cab exceeds the rotation angle of the transmission instruction, the feedback controller controls the second motor to operate, and the output end of the second motor drives the bidirectional screw to rotate, and the bidirectional screw drives the clamping block to move, and the driving shaft is clamped and limited by the clamping block to avoid the cab rotation angle exceeding the limit and increasing the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the detection structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the transmission structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the limiting structure of the utility model;

[0019] Figure 5 It is a top view of the limiting structure of the utility model.

[0020] Among them: crawler crane-1, detection structure-2, rectangular plate-3, cab-4, housing-21, first motor-22, rotating shaft-23, angle sensor-24, transmission structure-25, transmission shaft-251, first bevel gear-252, second bevel gear-253, limiting structure-254, mounting plate-2541, second motor-2542, bidirectional screw-2543, limiting rod-2544, clamping block-2545. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present invention, specific embodiments are described in detail below.

[0022] See also Figure 1-2 The utility model provides a new crawler crane cab rotation device, including a crawler crane 1, a detection structure 2, a rectangular plate 3 and a cab 4. The detection structure 2 is installed on the lower side of the crawler crane 1, and the upper end surface of the detection structure 2 is in contact with the rectangular plate 3. The cab 4 is installed on the upper end surface of the rectangular plate 3. The detection structure 2 includes a shell 21, a first motor 22, a rotating shaft 23, an angle sensor 24 and a transmission structure 25. The first motor 22 is installed on the inner lower side wall of the shell 21, and the output end of the first motor 22 is connected to the rotating shaft 23 for transmission. An angle sensor 24 is provided in the middle of the rotating shaft 23, and the angle sensor 24 is installed on the inner lower side wall of the shell 21. The left side of the rotating shaft 23 is connected to the transmission structure 25.

[0023] See also Figure 3 The utility model provides a new crawler crane cab rotation device, the transmission structure 25 includes a transmission shaft 251, a first bevel gear 252, a second bevel gear 253 and a limiting structure 254, the lower side of the transmission shaft 251 is sleeved with the first bevel gear 252, the first bevel gear 252 is meshed with the second bevel gear 253, and a limiting structure 254 is provided on the left side of the transmission shaft 251, the lower end of the transmission shaft 251 is rotatably connected to the inner lower side wall of the housing 21 through a bearing, the upper end of the transmission shaft 251 extends out of the housing 21 and is fixedly connected to the rectangular plate 3, the diameters of the rotating shaft 23 and the transmission shaft 251 are consistent, which is convenient for detecting the rotation angle by the angle sensor 24, and the second bevel gear 253 is sleeved on the left side of the rotating shaft 23, which is conducive to the rotating shaft 23 driving the first bevel gear 252 to rotate through the second bevel gear 253.

[0024] See also Figure 4-5The utility model provides a novel crawler crane cab rotation device, the limiting structure 254 includes a mounting plate 2541, a second motor 2542, a bidirectional screw 2543, a limiting rod 2544 and a clamping block 2545. The second motor 2542 is installed on the left end surface of the mounting plate 2541, and the output end of the second motor 2542 extends out of the mounting plate 2541 and is transmission-connected to the bidirectional screw 2543. The right end of the bidirectional screw 2543 is rotationally connected to the mounting plate 2541 through a bearing. The rear side of the inner wall of the mounting plate 2541 is fixed. The limiting rod 2544, the bidirectional screw 2543 and the left and right sides of the limiting rod 2544 are respectively penetrated by a clamping block 2545, and the inner wall of the clamping block 2545 is threadedly connected to the bidirectional screw 2543, the upper end face of the mounting plate 2541 is fixedly connected to the inner wall of the outer shell 21, the bidirectional screw 2543 and the limiting rod 2544 are parallel to each other, which facilitates the smooth movement of the clamping block 2545, and the clamping surface of the clamping block 2545 matches the transmission shaft 251, which is conducive to clamping and limiting the transmission shaft 251 through the clamping block 2545.

[0025] Here’s how it works:

[0026] First, the new device is moved to the desired location and connected to the circuit;

[0027] Second, the driver issues a rotation angle command, and the output end of the first motor 22 drives the rotating shaft 23 to rotate, which drives the second bevel gear 253 to rotate, which drives the first bevel gear 252 to rotate, which drives the transmission shaft 251 to rotate, which drives the rectangular plate 3 to rotate, and the rectangular plate 3 drives the cab 4 to rotate;

[0028] Third, the angle sensor 24 detects the rotation angle of the rotating shaft 23 and compares it with the rotation angle commanded by the driver. When the rotation angle of the cab 4 exceeds the command issued by the driver, the angle sensor 24 feedback controller controls the second motor 2542 to operate. The output end of the second motor 2542 drives the bidirectional screw 2543 to rotate. The bidirectional screw 2543 drives the two groups of clamping blocks 2545 to approach through the limiting rod 2544. Since the clamping surface of the clamping block 2545 matches the drive shaft 251, the two groups of clamping blocks 2545 clamp and limit the drive shaft 251, thereby achieving the effect of facilitating the detection of the rotation angle, avoiding the cab 4 from exceeding the rotation angle and increasing the risk of accidents.

[0029] The control method of the present invention is to manually start and stop the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field. Moreover, the present invention is mainly used to protect mechanical devices. Therefore, the control method and wiring arrangement are not explained in detail in the present invention.

[0030] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A new type of crawler crane cab rotation device, characterized by: The invention comprises a crawler crane (1), a detection structure (2), a rectangular plate (3) and a cab (4); the detection structure (2) is installed on the lower side of the crawler crane (1); the upper end surface of the detection structure (2) is in contact with the rectangular plate (3); the cab (4) is installed on the upper end surface of the rectangular plate (3); the detection structure (2) comprises a housing (21), a first motor (22), a rotating shaft (23), an angle sensor (24) and a transmission structure (25); the first motor (22) is installed on the inner lower side wall of the housing (21); the output end of the first motor (22) is connected to the rotating shaft (23) in a transmission manner; the angle sensor (24) is provided in the middle of the rotating shaft (23), and the angle sensor (24) is installed on the inner lower side wall of the housing (21); the left side of the rotating shaft (23) is connected to the transmission structure (25).

2. The novel crawler crane cab rotation device according to claim 1 is characterized in that: The transmission structure (25) comprises a transmission shaft (251), a first bevel gear (252), a second bevel gear (253) and a limiting structure (254); the first bevel gear (252) is sleeved on the lower side of the transmission shaft (251); the first bevel gear (252) is meshedly connected with the second bevel gear (253); a limiting structure (254) is provided on the left side of the transmission shaft (251); the lower end of the transmission shaft (251) is rotatably connected to the inner lower side wall of the housing (21) through a bearing; the upper end of the transmission shaft (251) extends out of the housing (21) and is fixedly connected to the rectangular plate (3).

3. The novel crawler crane cab rotation device according to claim 2 is characterized in that: The limiting structure (254) includes a mounting plate (2541), a second motor (2542), a bidirectional screw (2543), a limiting rod (2544) and a clamping block (2545). The second motor (2542) is mounted on the left end face of the mounting plate (2541). The output end of the second motor (2542) extends out of the mounting plate (2541) and is in transmission connection with the bidirectional screw (2543). The right end of the bidirectional screw (2543) is connected to the mounting plate (2541). The mounting plate (2541) is rotatably connected to the mounting plate (2541) via a bearing, a limiting rod (2544) is fixed to the rear side of the inner wall of the mounting plate (2541), and clamping blocks (2545) are respectively passed through the left and right sides of the bidirectional screw (2543) and the limiting rod (2544), and the inner wall of the clamping block (2545) is threadedly connected to the bidirectional screw (2543), and the upper end surface of the mounting plate (2541) is fixedly connected to the inner wall of the housing (21).

4. The novel crawler crane cab rotation device according to claim 2 is characterized in that: The diameters of the rotating shaft (23) and the transmission shaft (251) are consistent.

5. The novel crawler crane cab rotation device according to claim 2 is characterized in that: The second bevel gear (253) is sleeved on the left side of the rotating shaft (23).

6. The novel crawler crane cab rotation device according to claim 3 is characterized in that: The bidirectional screw (2543) and the limiting rod (2544) are parallel to each other.

7. The novel crawler crane cab rotation device according to claim 3 is characterized in that: The clamping surface of the clamping block (2545) matches the transmission shaft (251).

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