Tank car top electric safety device

Abstract

The utility model relates to the technical field of fluid loading and unloading equipment, in particular to a tank car top electric safety device which comprises an electric driving device driving a rotating arm to automatically rotate in the circumferential direction, the rotating speed is uniform, rotation is stable and controllable, and rotation is flexible. The rotating arm can rotate flexibly and freely within the range of 180 degrees on the loading side, and clamping stagnation is avoided. And when not in use, the box cover can be retracted into the operation table, so that the passing of the tank car is not hindered. And after rotating to a preset position, the locking device is used for locking, a series of processes of rotating, locking and re-rotating are completed, it is guaranteed that high-altitude operation is completed safely and efficiently, locking is firm, and an operator can walk safely and conveniently within the circumferential range. The hook on the anti-falling device is hung on a safety belt worn by a user, the sliding rail trolley moves forwards along the rotating arm along with the operator in the forward walking process, the anti-falling device is kept right above the operator all the time, and the safety of the operator can be protected to the maximum extent when the operator falls accidentally.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid loading and unloading equipment, in particular to an electric safety device on the top of a tank truck. Background Art

[0002] In chemical enterprises that need to load and unload vehicles, in order to ensure the safety of aerial work, most of them will set up fixed positions to install fall arresters, or build guardrails, scaffolding, etc. The use locations of these devices are relatively fixed, which is not convenient for installation and removal. When tank trucks of different models pass by, they may hinder or collide. The existing fall arrester has a rotating mechanism installed on the column. It is very heavy to operate, difficult to rotate, and inconvenient to repair and replace. It needs to be disassembled from the middle of the column; the locking device is easy to cause danger due to misoperation and is not reliable; the fall arrester is fixed on the ring and slides back and forth along the direction of the swing arm. Long-term friction will cause wear of the ring and the swing arm. Summary of the invention

[0003] The utility model aims to provide an electric safety device on the top of a tank car to solve the problems raised in the above background technology. The utility model has two operation modes, electric and manual, and has the advantages of convenient operation, long service life and flexible rotation.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric safety device on the top of a tank truck, comprising a column fixed on an on-site operating platform, a horizontally arranged rotating arm on the top of the column, a rotating mechanism between the rotating arm and the column, the rotating mechanism comprising an upper bearing seat and a lower bearing seat arranged along the length direction of the column, a rotating shaft passing through the upper bearing seat and the lower bearing seat, the lower part of the rotating shaft is fixed to one end of the rotating arm, an electric drive device for driving the rotating arm to rotate is arranged between the column and the rotating shaft, a locking device for limiting the rotation of the rotating arm is arranged below the electric drive device, a slide rail is arranged along the length direction of the rotating arm, a sliding trolley is arranged on the slide rail, and a fall arrester is arranged below the sliding trolley. The electric drive device drives the rotating arm to automatically rotate in the circumferential direction, with uniform rotation speed, stable and controllable rotation, and flexible rotation. The upper bearing seat and the lower bearing seat cooperate with the rotating shaft to realize the rotation of the rotating arm, which can rotate flexibly and freely within a range of 180° on the loading side without getting stuck.

[0005] It turns to the predetermined position and is locked by the locking device to complete a series of processes of rotation, locking, and re-rotation, ensuring the safe and efficient completion of aerial work. The locking is secure, which is convenient for operators to walk safely within the circumferential range. Before the operation, the operator hangs the hook on the fall arrester on the safety belt he wears. During the forward movement, the slide trolley follows the operator and moves forward along the rotating arm, keeping the fall arrester always directly above the operator, which can protect the safety of the operator to the greatest extent in the event of an accidental fall.

[0006] As a further solution of the utility model, the electric drive device includes a servo motor, which is fixed on the column through a mounting bracket, and a driving wheel is provided on the servo motor shaft, and a driven wheel is meshed on the driving wheel, and the driven wheel is sleeved on the rotating shaft. The servo motor provides power, and the automatic rotation of the rotating arm is completed through the cooperation of the driving wheel and the driven wheel, which saves labor, is safe and efficient to use, and has a high degree of automation.

[0007] As a further solution of the utility model, the locking device includes a locking disk that is inserted through the rotating shaft and is arranged horizontally, and the locking disk is evenly provided with a plurality of positioning holes along the circumference, and a locking mechanism is provided below the locking disk, and the locking mechanism includes a support box, and a locking spring is provided in the support box, and the lower end of the locking spring is arranged on the bottom plate of the support box body, and a locking rod is vertically inserted in the locking spring, and a clamping ring is provided on the locking rod, and the upper end of the locking spring is on the clamping ring, and the upper part of the clamping ring of the locking rod is set as a locking end head, and the locking end head is arranged opposite to the structural circular trajectory where the positioning hole is located, and the size of the locking end head is consistent with the aperture size of the positioning hole. The locking device manually pulls the locking rod to extend into or avoid the positioning hole to lock or unlock, and the locking is safe and reliable.

[0008] As a further solution of the utility model, the positioning holes are 24 straight slot holes, and the length direction of the slot body of each straight slot hole is arranged along the radius direction of the corresponding position. The rotating arm can rotate freely within a range of 180° on the loading side, and a locking point is set every 15° to ensure smooth operation even when there is a deviation in the parking position of the tank truck. The rotating arm can be locked at a very small angle interval, allowing for errors in the parking distance of the tank truck.

[0009] As a further solution of the utility model, the free end of the rotating arm is provided with a mounting plate, the mounting plate is matched with a baffle, the mounting plate and the baffle are provided with corresponding mounting holes, bolts are passed through the mounting holes and fastened by nuts. The baffle effectively prevents the sliding trolley from sliding off the rotating arm, and the baffle at the front end is detachable for repairing or replacing the slide rail trolley and the anti-fall device.

[0010] As a further solution of the utility model, a first lifting lug is provided at the free end of the rotating arm near the mounting plate, a second lifting lug is provided at the lower part of the column, a pull rope is provided between the first lifting lug and the second lifting lug, and shackles are provided at both ends of the pull rope, and the pull rope is connected to the first lifting lug and the second lifting lug respectively through the shackles. When a power outage occurs, manual operation is adopted, and the pull rope can be pulled to realize the rotation of the rotating arm, and a single person can easily operate it.

[0011] As a further solution of the utility model, a diagonal support beam is provided between the rotating arm and the rotating shaft, one end of the diagonal support beam is fixedly connected to the upper part of the rotating shaft, and the other end of the diagonal support beam is fixedly connected to the free end of the rotating arm. The diagonal support beam, the rotating shaft and the rotating arm form a triangular structure to achieve a reinforced and stable support effect.

[0012] As a further solution of the utility model, the wheels of the sliding trolley are made of insulating material to prevent the friction between the metal material and the carbon steel material of the rotating arm from generating sparks and causing the risk of fire and explosion.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The electric drive device drives the rotating arm to rotate automatically in the circumferential direction, with uniform speed, stable and controllable rotation, and flexible rotation. The upper bearing seat and the lower bearing seat cooperate with the rotating shaft to realize the rotation of the rotating arm, which can rotate flexibly and freely within the 180° range on the loading side without getting stuck. It can cover any angle on the loading side. When not in use, it can be retracted into the operating table without hindering the passage of the tank truck. It is rotated to the predetermined position and locked by the locking device to complete a series of processes of rotation, locking, and re-rotation, ensuring the safe and efficient completion of high-altitude operations. The locking is secure, which facilitates the operator to walk safely within the circumferential range. Before the operation, the operator hangs the hook on the fall arrester on the safety belt he wears. During the forward movement, the slide trolley follows the operator and moves forward along the rotating arm, keeping the fall arrester always directly above the operator, which can protect the safety of the operator to the greatest extent in the event of an accidental fall.

[0015] (2) The electric drive device includes a servo motor, which provides power and completes the automatic rotation of the rotating arm through the cooperation of the driving wheel and the driven wheel, saving labor, being safe and efficient to use, and having a high degree of automation.

[0016] (3) The locking device is manually pulled to extend the locking rod into or away from the positioning hole to lock or unlock, and the locking is safe and reliable. The positioning holes are 24 straight slot holes, and the length direction of the slot body of each straight slot hole is set along the radius direction of the corresponding position. The swing arm can rotate freely within a range of 180° on the loading side, and a locking point is set every 15° to ensure smooth operation even when there is a deviation in the parking position of the tank truck. The swing arm can be locked at a very small angle interval, allowing for errors in the parking distance of the tank truck.

[0017] (4) A mounting plate is provided at the free end of the rotating arm, and a baffle is provided on the mounting plate. The baffle effectively prevents the sliding trolley from sliding off the rotating arm. The baffle at the front end is removable for repairing or replacing the slide trolley and the anti-fall device.

[0018] (5) A pull rope is provided between the first lifting eye and the second lifting eye, and shackles are provided at both ends of the pull rope. The pull rope is connected to the first lifting eye and the second lifting eye respectively through the shackles. When a power outage occurs, manual operation is adopted, and the arm can be rotated by pulling the pull rope, and a single person can easily operate it.

[0019] (6) The diagonal bracing beam, the rotating shaft and the rotating arm form a triangular structure to achieve a reinforced and stable support function.

[0020] (7) The wheels of the sliding trolley are made of insulating material to prevent sparks from being generated by friction between the metal material and the carbon steel material of the rotating arm, which could cause fire and explosion hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the electric drive device of the utility model;

[0024] Figure 3 This is a schematic diagram of the locking disk structure of the utility model.

[0025] In the figure: 1-control box, 2-column, 3-locking device, 301-locking rod, 4-electric drive device, 401-driving wheel, 402-driven wheel, 403-mounting support, 404-servo motor, 5-locking plate, 501-positioning hole, 6-upper bearing seat, 7-rotating shaft, 8-rotating arm, 9-sliding trolley, 10-fall arrester, 11-pull rope, 12-first lifting ear, 13-baffle, 14-diagonal support beam. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] Please see attached Figure 1 -Attached Figure 3 A tank truck top electric safety device includes a column 2 fixed on a field operation platform, a horizontally arranged rotating arm 8 is arranged on the top of the column, a diagonal bracing beam 14 is arranged between the rotating arm and the rotating shaft, one end of the diagonal bracing beam is fixedly connected to the upper part of the rotating shaft, and the other end of the diagonal bracing beam is fixedly connected to the free end of the rotating arm. The diagonal bracing beam, the rotating shaft and the rotating arm form a triangular structure, and the diagonal bracing beam moves integrally with the rotating arm.

[0029] The column is provided with a control box 1, on which a control button is provided, and a control module and a power supply are provided in the control box. The control module is in communication connection with the electric drive device and the control button, and the control module, the electric drive device and the control button are all electrically connected to the power supply. When the control button is turned on, the control module controls the electric drive device to start, and when the control button is turned off, the control module controls the electric drive device to stop working.

[0030] A rotating mechanism is provided between the rotating arm 8 and the column 2. The rotating mechanism includes an upper bearing seat 6 and a lower bearing seat arranged along the length direction of the column. A rotating shaft 7 is passed through the upper bearing seat and the lower bearing seat. The lower part of the rotating shaft is fixedly arranged with one end of the rotating arm. An electric driving device 4 for driving the rotating arm to rotate is provided between the column and the rotating shaft. The electric driving device includes a servo motor 404. The servo motor is fixed to the column through a mounting support 403. A driving wheel 401 is provided on the servo motor shaft. A driven wheel 402 is meshed on the driving wheel. The driven wheel is sleeved on the rotating shaft. The servo motor starts to drive the driving wheel to rotate. The rotation of the driving wheel drives the driven wheel to rotate. The rotation of the driven wheel drives the rotating shaft 7 to rotate, and transmits power to the automatic rotation of the rotating arm 8. When the rotating arm rotates to a predetermined position, the servo motor stops working.

[0031] The rotating arm is provided with a slide rail along the length direction, a sliding trolley 9 is provided on the slide rail, and a fall arrester 10 is provided below the sliding trolley. The wheels of the sliding trolley are made of insulating material, and the friction between the metal material and the carbon steel material of the rotating arm will not generate sparks, and there will be no fire and explosion danger.

[0032] Before the operation, the operator hangs the hook on the fall arrester 10 on the safety belt he is wearing. During the forward movement, the slide trolley 9 follows the operator and moves forward along the rotating arm, keeping the fall arrester always directly above the operator, which can protect the operator's safety to the greatest extent in the event of an accidental fall.

[0033] The free end of the rotating arm is provided with a mounting plate, which is matched with a baffle 13, and corresponding mounting holes are provided on the mounting plate and the baffle, and bolts are passed through the mounting holes and fastened by nuts. The sliding trolley slides from the rotating arm and stops at the baffle position to reach the maximum sliding radius.

[0034] When the slide rail trolley 9 and the anti-drop device 10 need to be repaired or replaced, the bolts and nuts are removed, the mounting plate is removed, the slide rail trolley or the anti-drop device is removed, a new slide rail trolley or the anti-drop device is replaced, and the mounting plate is reinstalled and fixed.

[0035] A locking device 3 for limiting the rotation of the rotating arm is provided below the electric drive device. The locking device includes a locking plate 5 that is inserted through the rotating shaft and arranged horizontally. The locking plate is evenly provided with 24 positioning holes 501 along the circumference. The positioning holes are 24 straight slot holes. The length direction of the slot of each straight slot hole is arranged along the radius direction of the corresponding position. The rotating arm can rotate freely within a range of 180° on the loading side, and a locking point is set every 15°.

[0036] A locking mechanism 3 is provided below the locking disk, and the locking mechanism includes a supporting box, a locking spring is provided inside the supporting box, the lower end of the locking spring is arranged on the bottom plate of the supporting box, a locking rod 301 is vertically passed through the locking spring, a clamping ring is provided on the locking rod, the upper end of the locking spring is on the clamping ring, the upper part of the clamping ring of the locking rod is set as a locking end head, the locking end head is set opposite to the structural circular trajectory where the positioning hole is located, and the size of the locking end head is consistent with the aperture size of the positioning hole.

[0037] When the rotating arm needs to be rotated, the locking rod in the locking device is pulled downward, and the locking rod can be locked by rotating 90 degrees to both sides to keep the locking rod from being inserted into the positioning hole and contact locked.

[0038] When the rotating arm needs to be locked, it can be locked at a very small angle interval to allow for the error in the parking distance of the tank truck. The locking device is manually pulled to extend the locking rod into the positioning hole to lock. After locking, the operator can walk safely within the circumferential range.

[0039] Example 2

[0040] The difference from Example 1 is that manual operation is adopted in case of power outage.

[0041] Please refer to the attached Figure 1 A first lifting lug 12 is provided at the free end of the rotating arm near the mounting plate, a second lifting lug is provided at the lower part of the column, a pull rope 11 is provided between the first lifting lug and the second lifting lug, and shackles are provided at both ends of the pull rope, and the pull rope is connected to the first lifting lug and the second lifting lug respectively through the shackles. In the event of a power outage, the rotating arm can be rotated by pulling the pull rope, and the rotating arm can be rotated by one person.

[0042] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric safety device on the top of a tank car, characterized by: The utility model comprises a column (2) fixed on a field operation platform, a horizontally arranged rotating arm (8) is arranged on the top of the column, a rotating mechanism is arranged between the rotating arm and the column, the rotating mechanism comprises an upper bearing seat (6) and a lower bearing seat arranged along the length direction of the column, a rotating shaft (7) is passed through the upper bearing seat and the lower bearing seat, the lower part of the rotating shaft is fixedly arranged with one end of the rotating arm, an electric driving device (4) for driving the rotating arm to rotate is arranged between the column and the rotating shaft, a locking device (3) for limiting the rotation of the rotating arm is arranged below the electric driving device, a slide rail is arranged along the length direction of the rotating arm, a sliding trolley (9) is arranged on the slide rail, and a fall arrester (10) is arranged below the sliding trolley.

2. The electric safety device on the top of a tank car according to claim 1, characterized in that: The electric drive device (4) comprises a servo motor (404), which is fixed on a column via a mounting support (403), a driving wheel (401) is arranged on the shaft of the servo motor, a driven wheel (402) is meshed with the driving wheel, and the driven wheel is sleeved on a rotating shaft (7).

3. The electric safety device on the top of a tank car according to claim 1, characterized in that: The locking device (3) comprises a locking disk (5) which is inserted through the rotating shaft and arranged horizontally, and the locking disk is provided with a plurality of positioning holes (501) evenly distributed along the circumference, and a locking mechanism is provided below the locking disk, and the locking mechanism comprises a support box, a locking spring is provided in the support box, and the lower end of the locking spring is arranged on the bottom plate of the support box body, and a locking rod (301) is vertically inserted in the locking spring, and a clamping ring is provided on the locking rod, and the upper end of the locking spring is on the clamping ring, and the upper part of the clamping ring of the locking rod is set as a locking end head, and the locking end head is arranged opposite to the structural circular trajectory where the positioning hole is located, and the size of the locking end head is consistent with the aperture size of the positioning hole.

4. The electric safety device on the top of a tank car according to claim 3, characterized in that: The positioning holes (501) are 24 straight slot holes, and the length direction of the slot body of each straight slot hole is arranged along the radius direction of the corresponding position.

5. The electric safety device on the top of a tank car according to claim 1, characterized in that: The free end of the rotating arm (8) is provided with a mounting plate, on which a baffle (13) is provided in cooperation, and corresponding mounting holes are provided on the mounting plate and the baffle, and bolts are passed through the mounting holes and fastened by nuts.

6. The electric safety device on the top of a tank car according to claim 5, characterized in that: A first lifting ear (12) is provided at the free end of the rotating arm near the mounting plate, a second lifting ear is provided at the lower part of the column, a drawstring (11) is provided between the first lifting ear and the second lifting ear, and shackles are provided at both ends of the drawstring, and the drawstring is connected to the first lifting ear and the second lifting ear respectively through the shackles.

7. The electric safety device on the top of a tank car according to claim 1, characterized in that: An oblique support beam (14) is provided between the rotating arm and the rotating shaft, one end of the oblique support beam is fixedly connected to the upper part of the rotating shaft, and the other end of the oblique support beam is fixedly connected to the free end of the rotating arm.

8. The electric safety device on the top of a tank car according to claim 1, characterized in that: The wheels of the sliding trolley (9) are made of insulating material.

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