Novel crawler crane cab pitching device

Abstract

The utility model discloses a novel crawler crane cab pitching device, which comprises a crawler crane, a transmission structure, a cab and a rotating bracket, and is characterized in that the transmission structure is arranged, the output end of a first motor drives a rotating shaft to rotate, and the rotating shaft drives a transmission shaft to rotate through a belt pulley group; the transmission shaft drives the cab to rotate, the rotation angle of the transmission shaft is detected through the angle sensor, so that the rotation angle can be compared with a rotation angle instruction given by a driver, and when the rotation angle exceeds the instruction, the output end of the second motor drives the two-way screw to rotate; the bidirectional screw drives the sliding plate to move through limiting cooperation of the limiting rod, the sliding plate drives the clamping block to clamp and limit the rotating shaft, the effect of conveniently detecting the pitching angle of the cab is achieved, and the problem that the accident risk is increased due to the fact that the rotating angle exceeds is avoided.

Description

Technical Field

[0001] The utility model relates to the relevant fields of crawler cranes, in particular to a novel cab pitching device for crawler cranes. 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. CN202609808U discloses a "Cab Device Capable of Rotating and Pitching." A hydraulic lifting cylinder is provided between the cab and the tray device. One end of the hydraulic lifting cylinder is hinged to the tray device, and the other end is hinged to the bottom of the cab. The tray device is rotatably connected to the vehicle body. The cab device also includes a rotation-assisting hydraulic cylinder. One end of the rotation-assisting hydraulic cylinder is hinged to the vehicle body, and the other end is hinged to the tray device. Through the rotation-assisting hydraulic device, the rotation of the cab device is hydraulically controlled instead of manually propelled, which is convenient and fast, and improves work efficiency.

[0004] Although the above-mentioned cab device capable of rotating and pitching has certain advantages in terms of pitching capability, it is not convenient to detect the pitching angle. The operator cannot accurately know the real-time pitching 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 pitching 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 pitching device, comprising a crawler crane, a transmission structure, a cab and a rotating bracket, a transmission structure is provided on the lower side of the crawler crane, a cab is installed on the upper end face of the transmission structure, the right side of the cab is rotatably connected to the crawler crane through a rotating bracket, the transmission structure comprises a housing, a first motor, a rotating shaft, a pulley group, a transmission shaft and a detection structure, a first motor is installed on the inner left side wall of the housing, the output end of the first motor extends out of the housing and is transmission-connected to the rotating shaft, the rotating shaft is transmission-connected to the transmission shaft through the pulley group, and a cab is installed in the middle of the upper end face of the housing.

[0007] Optionally, the detection structure includes a support plate, a mounting plate, an angle sensor and a limiting structure. The mounting plate is installed on the rear side of the right end face of the support plate, and the angle sensor is installed on the rear end face of the mounting plate. The angle sensor is used to detect the angle of the transmission shaft. A limiting structure is provided on the upper side of the angle sensor, and the lower end face of the support plate is fixedly connected to the outer shell.

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

[0009] Optionally, the transmission shaft is rotatably connected to the detection structure via a bearing.

[0010] Optionally, the bidirectional screw and the limiting rod are parallel to each other.

[0011] Optionally, the clamping surface of the clamping block matches the transmission shaft.

[0012] Optionally, the clamping blocks are symmetrically distributed around the transmission shaft.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses a novel crawler crane cab pitching device. By setting a transmission structure, the output end of the first motor drives the rotating shaft to rotate, the rotating shaft drives the transmission shaft to rotate through a pulley group, and the transmission shaft drives the cab to rotate. The rotation angle of the transmission shaft is detected by an angle sensor, so that it can be compared with the rotation angle instruction issued by the driver. When the rotation angle exceeds the instruction, the output end of the second motor drives the bidirectional screw to rotate, the bidirectional screw drives the sliding plate to move by the limiting cooperation of the limiting rod, and the sliding plate drives the clamping block to clamp and limit the rotating shaft, thereby achieving the effect of facilitating the detection of the cab pitch angle and avoiding the problem of increasing the risk of accidents due to exceeding the rotation angle. 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 This is a schematic diagram of the internal structure of the transmission structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the detection 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 the right view of the limiting structure of the utility model.

[0020] Among them: crawler crane-1, transmission structure-2, cab-3, rotating bracket-4, housing-21, first motor-22, rotating shaft-23, pulley assembly-24, transmission shaft-25, detection structure-26, support plate-261, mounting plate-262, angle sensor-263, limiting structure-264, fixing plate-2641, protective shell-2642, second motor-2643, bidirectional screw-2644, limiting rod-2645, sliding plate-2646, clamping block-2647. 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 type of crawler crane cab pitching device, including a crawler crane 1, a transmission structure 2, a cab 3 and a rotating bracket 4. The transmission structure 2 is provided on the lower side of the crawler crane 1, and the cab 3 is installed on the upper end surface of the transmission structure 2. The right side of the cab 3 is rotatably connected to the crawler crane 1 through the rotating bracket 4. The transmission structure 2 includes a shell 21, a first motor 22, a rotating shaft 23, a pulley group 24, a transmission shaft 25 and a detection structure 26. The first motor 22 is installed on the inner left wall of the shell 21, and the output end of the first motor 22 extends out of the shell 21 and is transmission-connected to the rotating shaft 23. The rotating shaft 23 is transmission-connected to the transmission shaft 25 through the pulley group 24. The cab 3 is installed in the middle of the upper end surface of the shell 21. The transmission shaft 25 is rotatably connected to the detection structure 26 through a bearing, which is convenient for supporting and limiting the transmission shaft 25.

[0023] See also Figure 3 The utility model provides a new type of crawler crane cab pitching device, the detection structure 26 includes a support plate 261, a mounting plate 262, an angle sensor 263 and a limiting structure 264, the mounting plate 262 is installed on the rear side of the right end surface of the support plate 261, the rear end surface of the mounting plate 262 is installed with an angle sensor 263, and the angle sensor 263 is used to detect the angle of the transmission shaft 25, the upper side of the angle sensor 263 is provided with a limiting structure 264, and the lower end surface of the support plate 261 is fixedly connected to the outer shell 21.

[0024] See also Figure 4-5 The utility model provides a new crawler crane cab pitching device, the limiting structure 264 includes a fixed plate 2641, a protective shell 2642, a second motor 2643, a bidirectional screw 2644, a limiting rod 2645, a sliding plate 2646 and a clamping block 2647, the front side of the upper end face of the fixed plate 2641 is installed with a protective shell 2642, the interior of the protective shell 2642 is provided with a second motor 2643, and the second motor 2643 is installed on the upper end face of the fixed plate 2641, the output end of the second motor 2643 extends out of the fixed plate 2641 and is transmission-connected to the bidirectional screw 2644, the lower end of the bidirectional screw 2644 is rotationally connected to the fixed plate 2641 through a bearing, and the interior of the fixed plate 2641 is rotated. A limiting rod 2645 is installed on the rear side of the wall, and sliding plates 2646 are respectively passed through the upper and lower sides of the bidirectional screw 2644 and the limiting rod 2645, and the inner wall of the sliding plate 2646 is threadedly connected to the bidirectional screw 2644. A clamping block 2647 is installed on the inner wall of the sliding plate 2646. The left end face of the fixed plate 2641 is fixedly connected to the support plate 261. The bidirectional screw 2644 and the limiting rod 2645 are parallel to each other, which facilitates the smooth movement of the clamping block 2647. The clamping surface of the clamping block 2647 matches the transmission shaft 25, which is beneficial for the clamping block 2647 to clamp and limit the transmission shaft 25. The clamping blocks 2647 are symmetrically distributed with the transmission shaft 25 as the center, which facilitates the stable clamping of the rotating shaft 25.

[0025] Here’s how it works:

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

[0027] Second, by controlling the first motor 22 to operate, the output end of the first motor 22 drives the rotating shaft 23 to rotate, the rotating shaft 23 drives the transmission shaft 25 to rotate through the pulley set 24, and the transmission shaft 25 drives the cab 3 to rotate;

[0028] Third, the rotation angle of the transmission shaft 25 is detected by the angle sensor 263, so that it can be compared with the rotation angle command issued by the driver. When the rotation angle exceeds the command, the output end of the second motor 2643 drives the bidirectional screw 2644 to rotate, and the bidirectional screw 2644 uses the limiting cooperation of the limiting rod 2645 to make the bidirectional screw 2644 drive the sliding plate 2646 to move, and the sliding plate 2646 drives the clamping block 2647 to move, and the clamping block 2647 clamps and limits the transmission shaft 25, thereby achieving the effect of facilitating the detection of the pitch angle of the cab 3 and avoiding the problem of increasing the risk of accidents due to exceeding the rotation angle.

[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 pitching device, characterized by: The invention comprises a crawler crane (1), a transmission structure (2), a cab (3) and a rotating bracket (4); the transmission structure (2) is provided on the lower side of the crawler crane (1); the cab (3) is installed on the upper end surface of the transmission structure (2); the right side of the cab (3) is rotatably connected to the crawler crane (1) through the rotating bracket (4); the transmission structure (2) comprises a housing (21), a first motor (22), a rotating shaft (23), a pulley group (24), a transmission shaft (25) and a detection structure (26); the first motor (22) is installed on the inner left side wall of the housing (21); the output end of the first motor (22) extends out of the housing (21) and is transmission-connected to the rotating shaft (23); the rotating shaft (23) is transmission-connected to the transmission shaft (25) through the pulley group (24); and the cab (3) is installed in the middle of the upper end surface of the housing (21).

2. The novel crawler crane cab pitching device according to claim 1 is characterized in that: The detection structure (26) comprises a support plate (261), a mounting plate (262), an angle sensor (263) and a limiting structure (264); the mounting plate (262) is mounted on the rear side of the right end face of the support plate (261); the angle sensor (263) is mounted on the rear end face of the mounting plate (262); and the angle sensor (263) is used to detect the angle of the transmission shaft (25); the limiting structure (264) is arranged on the upper side of the angle sensor (263); and the lower end face of the support plate (261) is fixedly connected to the housing (21).

3. The novel crawler crane cab pitching device according to claim 2 is characterized in that: The limiting structure (264) comprises a fixed plate (2641), a protective shell (2642), a second motor (2643), a bidirectional screw (2644), a limiting rod (2645), a sliding plate (2646) and a clamping block (2647). The protective shell (2642) is installed on the front side of the upper end face of the fixed plate (2641). The second motor (2643) is arranged inside the protective shell (2642). The second motor (2643) is installed on the upper end face of the fixed plate (2641). The output end of the second motor (2643) extends out of the fixed plate (2641) and the bidirectional screw. The rod (2644) is connected in transmission, the lower end of the bidirectional screw (2644) is rotatably connected to the fixed plate (2641) through a bearing, a limiting rod (2645) is installed on the rear side of the inner wall of the fixed plate (2641), and the upper and lower sides of the bidirectional screw (2644) and the limiting rod (2645) are respectively penetrated by a sliding plate (2646), and the inner wall of the sliding plate (2646) is threadedly connected to the bidirectional screw (2644), and a clamping block (2647) is installed on the inner wall of the sliding plate (2646), and the left end face of the fixed plate (2641) is fixedly connected to the support plate (261).

4. The novel crawler crane cab pitching device according to claim 1 is characterized in that: The transmission shaft (25) is rotationally connected to the detection structure (26) via a bearing.

5. The novel crawler crane cab pitching device according to claim 3 is characterized in that: The bidirectional screw (2644) and the limiting rod (2645) are parallel to each other.

6. The novel crawler crane cab pitching device according to claim 3 is characterized in that: The clamping surface of the clamping block (2647) matches the transmission shaft (25).

7. The novel crawler crane cab pitching device according to claim 3 is characterized in that: The clamping blocks (2647) are symmetrically distributed with the transmission shaft (25) as the center.

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