Protective device for vertical speed reducer of bridge crane trolley

Abstract

The utility model discloses a protective device for a vertical speed reducer of a bridge crane trolley, belongs to the technical field of bridge cranes, and solves the problem that product quality accidents are easily caused as the conventional vertical speed reducer is not provided with a protective device. The device comprises an upper fixing plate and a lower protective shell, the upper fixing plate is fixed to the top of a trolley frame and connected with the top of a speed reducer through a bolt and nut assembly, the lower protective shell surrounds the position under the speed reducer, the two sides of the lower protective shell are fixedly connected with the trolley frame, and the lower protective shell is connected with the top of the speed reducer through a bolt and nut assembly. Containing grooves for containing an output shaft of the speed reducer are formed in the two sides of the lower protective shell, bearings are installed on the containing grooves, the output shaft of the speed reducer is installed on inner rings of the bearings, arc-shaped covers are arranged on outer rings of the bearings, and the arc-shaped covers are connected with the lower protective shell through fastening bolts. According to the protection device, product quality accidents caused by leakage of lubricating oil can be effectively reduced, meanwhile, the purpose of fixing the speed reducer is achieved, and the equipment stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge cranes, and more specifically, to a protective device for a vertical speed reducer of a bridge crane trolley. Background Art

[0002] The vertical reducer of the bridge crane trolley uses centralized lubrication with lubricating oil. When the temperature of the crane operating environment is high or reaches a certain age, oil leakage will occur in the reducer vent or reducer oil seal. Since there are no protective measures at the bottom, the leaked lubricating oil will directly fall onto the product surface, causing the product to fail the inspection and cause a quality accident, or fall onto the high-temperature part of the ground, which will cause the falling lubricating oil to catch fire, posing a serious safety hazard. Moreover, the installation method of the reducer is usually only fixed vertically on the side of the crane trolley platform by anchor bolts. The anchor bolts are easily loosened during the operation of the trolley. When the anchor bolts of the reducer are loose and not tightened in time, the radial runout of the output shafts on both sides of the reducer will be too large, resulting in abnormal vibration of the reducer, causing the crane trolley to run unsteadily, and easily causing equipment damage.

[0003] Therefore, it is urgent to design a bridge crane trolley vertical reducer protection device to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a bridge crane trolley vertical reducer protection device in view of the above-mentioned deficiencies in the prior art, which can effectively reduce product quality accidents caused by lubricating oil leakage, while achieving the purpose of fixing the reducer and improving equipment stability.

[0005] The technical solution of the utility model is as follows: a vertical reducer protection device for a bridge crane trolley, comprising an upper fixed plate and a lower protective shell, wherein the upper fixed plate is fixed to the top of the trolley frame, and the upper fixed plate is connected to the top of the reducer by a bolt and nut assembly, and the lower protective shell is a shell with a triangular cross-section and an open top, the lower protective shell surrounds the reducer directly below, and the two sides of the lower protective shell are fixedly connected to the trolley frame, and the two sides of the lower protective shell are provided with receiving grooves for accommodating the output shaft of the reducer, and bearings are installed on the receiving grooves, the output shaft of the reducer is installed on the inner ring of the bearing, and the outer ring of the bearing is provided with an arc cover, and the arc cover is connected to the lower protective shell by fastening bolts, and a tray for holding lubricating oil is movably placed in the lower protective shell below the reducer.

[0006] As a further improvement, a handle is provided on the front side of the tray.

[0007] Furthermore, a magnet block is embedded in the bottom of the tray, and the lower protective shell is made of iron.

[0008] Furthermore, reinforcing ribs are provided between the two sides of the lower protective shell and the trolley frame.

[0009] Furthermore, the lower protective shell and the upper fixing plate are both made of Q235 steel plates with a thickness of 16 mm.

[0010] Furthermore, support plates are provided on both sides of the reducer, the support plates are overlapped on the top of the trolley frame, and the support plates and the trolley frame are connected by a bolt and nut assembly.

[0011] Furthermore, a rubber pad is provided at the bottom of the outer wall of the lower protective shell.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The protective device of the utility model plays a role in protecting the reducer by arranging a lower protective shell under the reducer, and a tray is arranged in the lower protective shell. The lubricating oil leaking from the air vents or oil seals of the reducer is directly received by the tray, so as to prevent the lubricating oil leaking from the reducer from falling to the ground. It can effectively reduce product quality accidents caused by lubricating oil leakage, and the tray is detachable. When cleaning, you only need to remove the tray for cleaning, which is very convenient for cleaning and maintenance.

[0015] 2. The protective device of the utility model adopts a three-point fixing method consisting of an upper fixing plate and support plates on both sides to connect the reducer to the trolley frame, thereby improving the installation stability of the reducer. At the same time, bearings and arc covers are arranged on both sides of the lower protective shell to support the output shaft of the reducer and prevent radial runout of the output shaft of the reducer, thereby achieving the purpose of further fixing the reducer and improving the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the main structure of the utility model.

[0018] Among them: 1-upper fixing plate, 2-lower protective shell, 3-trolley frame, 4-bolt and nut assembly, 5-reducer, 6-bearing, 7-arc cover, 8-fastening bolts, 9-tray, 10-handle, 11-reinforcement rib, 12-support plate, 13-rubber pad. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0020] See also Figure 1-2 The utility model discloses a vertical reducer protection device for a bridge crane trolley, comprising an upper fixing plate 1 and a lower protective shell 2. The upper fixing plate 1 is fixed to the top of the trolley frame 3. Specifically, the upper fixing plate 1 is fixed to the top of the trolley frame 3 by welding, and the upper fixing plate 1 is connected to the top of the reducer 5 by a bolt and nut assembly 4. The bolt and nut assembly 4 is composed of bolts and nuts. The bolts pass through the mounting plate and the upper fixing plate 1 at the top of the reducer 5, and are then threadedly connected with the nuts to achieve a fastening connection between the upper fixing plate 1 and the reducer 5. The lower protective shell 2 is a shell with a triangular cross-section and an open top. The lower protective shell 2 surrounds the reducer 5 directly below, and both sides of the lower protective shell 2 are fixed to the trolley frame 3. Fixed connection, specifically, the lower protective shell 2 is fixed to the trolley frame 3 by welding, and receiving grooves for accommodating the output shaft of the reducer 5 are provided on both sides of the lower protective shell 2. The receiving grooves are located on the front side of the lower protective shell 2 to avoid interference with the trolley frame 3. The receiving grooves are arc-shaped grooves, and bearings 6 are installed on the receiving grooves. The output shaft of the reducer 5 is installed on the inner ring of the bearing 6, and an arc-shaped cover 7, i.e., a bearing cover, is provided on the outer ring of the bearing 6. The arc-shaped cover 7 is connected to the lower protective shell 2 by fastening bolts 8. The fastening bolts 8 pass through both ends of the arc-shaped cover 7 and are threadedly connected to the lower protective shell 2 to realize the detachable installation of the arc-shaped cover 7. A tray 9 for holding lubricating oil is movably placed in the lower protective shell 2 below the reducer 5.

[0021] The protective device of the present invention protects the reducer 5 by arranging a lower protective shell 2 under the reducer 5, and a tray 9 is arranged in the lower protective shell 2. The lubricating oil leaking from the air vents or oil seals of the reducer is directly received by the tray 9, so as to prevent the lubricating oil leaking from the reducer from falling to the ground. The product quality accidents caused by the leakage of lubricating oil can be effectively reduced. The tray 9 is detachable and can be placed when cleaning. It only needs to be removed for cleaning, and the cleaning and maintenance are very convenient.

[0022] Preferably, a handle 10 is provided on the front side of the tray 9 to facilitate taking out the tray 9 .

[0023] Preferably, a magnet block is embedded at the bottom of the tray 9, and the lower protective shell 2 is made of iron. The tray 9 is adsorbed on the lower protective shell 2 by magnets to prevent the tray 9 from falling off automatically, thereby further improving safety.

[0024] Preferably, reinforcing ribs 11 are provided between the two sides of the lower protective shell 2 and the trolley frame 3 to improve the connection stability between the lower protective shell 2 and the trolley frame 3 .

[0025] Preferably, the lower protective shell 2 and the upper fixing plate 1 are both made of Q235 steel plates with a thickness of 16 mm, which effectively improves the structural strength of the lower protective shell 2 and the upper fixing plate 1 and improves the installation stability of the reducer 5.

[0026] Preferably, support plates 12 are provided on both sides of the reducer 5, the support plates 12 are overlapped on the top of the trolley frame 3, and the support plates 12 and the trolley frame 3 are connected by a bolt and nut assembly 4. Specifically, the bolts pass through the support plates 12 and the trolley frame 3 and are connected to the nuts to achieve a fixed connection between the reducer 5 and the trolley frame 3.

[0027] In this embodiment, the reducer 5 is connected to the trolley frame 3 by a three-point fixing method consisting of an upper fixing plate 1 and support plates 12 on both sides, thereby improving the installation stability of the reducer 5. At the same time, bearings 6 and arc covers 7 are arranged on both sides of the lower protective shell 2 to support the output shaft of the reducer and prevent radial runout of the output shaft of the reducer, thereby achieving the purpose of further fixing the reducer and improving the stability of the equipment.

[0028] Preferably, a rubber pad 13 is further provided at the bottom of the outer wall of the lower protective shell 2. The rubber pad 13 is made of high-temperature resistant rubber material and can play a role of flexible contact once it encounters an interference object.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A vertical reducer protection device for a bridge crane trolley, characterized in that: The invention comprises an upper fixing plate (1) and a lower protective shell (2), wherein the upper fixing plate (1) is fixed on the top of a trolley frame (3), and the upper fixing plate (1) is connected to the top of a reducer (5) through a bolt and nut assembly (4), and the lower protective shell (2) is a shell with a triangular cross-section and an open top, and the lower protective shell (2) surrounds the reducer (5) directly below, and the two sides of the lower protective shell (2) are fixedly connected to the trolley frame (3), and the two sides of the lower protective shell (2) are provided with receiving grooves for accommodating the output shaft of the reducer (5), and the receiving grooves are provided with bearings (6), and the output shaft of the reducer (5) is installed on the inner ring of the bearing (6), and the outer ring of the bearing (6) is provided with an arc cover (7), and the arc cover (7) is connected to the lower protective shell (2) through a fastening bolt (8), and a tray (9) for receiving lubricating oil is movably placed in the lower protective shell (2) below the reducer (5).

2. A bridge crane trolley vertical reducer protection device according to claim 1, characterized in that: A handle (10) is provided on the front side of the tray (9).

3. A bridge crane trolley vertical reducer protection device according to claim 1, characterized in that: A magnet block is embedded at the bottom of the tray (9), and the lower protective shell (2) is made of iron.

4. A bridge crane trolley vertical reducer protection device according to claim 1, characterized in that: Reinforcing ribs (11) are also provided between the two sides of the lower protective shell (2) and the trolley frame (3).

5. The vertical reducer protection device for a bridge crane trolley according to claim 1 is characterized in that: The lower protective shell (2) and the upper fixing plate (1) are both made of Q235 steel plates with a thickness of 16 mm.

6. A bridge crane trolley vertical reducer protection device according to any one of claims 1 to 5, characterized in that: Support plates (12) are provided on both sides of the reducer (5), the support plates (12) are overlapped on the top of the trolley frame (3), and the support plates (12) and the trolley frame (3) are connected via a bolt and nut assembly (4).

7. A bridge crane trolley vertical reducer protection device according to claim 6, characterized in that: A rubber pad (13) is also provided at the bottom of the outer wall of the lower protective shell (2).

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