JPH03200695A - Compact hoist - Google Patents

Abstract

PURPOSE: To facilitate installation, maintenance, and repair by supporting a motor shaft in the lid of a transmission device located opposing to a motor, supporting one end of the transmission device output shaft in the wall of a holding casing, and supporting the other end in the end plate. CONSTITUTION: A holding casing 1 has on one side a casing wall 5 fitted with a bearing 6 for the transmission device output shaft 14, which is equipped with a sprocket 23a. The other casing side has a large center opening 4 for the end plate 12 of a motor 11, and the second bearing 15 for the shaft 14 is installed in the motor 11. The lid 17 of the transmission device fastened by screw to the casing 1 is fitted with a motor bearing 16 for the transmission side end part of the motor shaft 13. An insertion groove 10 to admit insertion of a guide member 28a for a holding means 29 is provided at the undersurface of the casing 1. To remove the sprocket 23a, neither the motor 11 nor the transmission device is required to be opened, and it is possible to replace the sprocket or other takeup device through the opening 4 appearing at removal of the motor.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to compact hoists such as are known as electrically actuated chain conveyors from DE 33 30 528 A1.

b. Prior Art The sprocket of such a compact hoist is arranged between the electric motor and the transmission. This coaxial structure of the motor shaft and the output shaft, in which the rapidly rotating drive is provided by the slowly running output shaft, provides good weight balance, but has major drawbacks in terms of installation and maintenance, and requires no wear parts. The cost of spare parts is high and the flexibility is very low as the compact hoist cannot be equipped with other winding devices or larger sprockets instead of the normal sprocket.

Sprockets that frequently wear out during heavy use must be replaced in the case of this device after dismantling the transmission and removing the motor, in which case the oil in the transmission must be drained and then refilled. No.

Furthermore, if the operator of the chain conveyor does not regularly lubricate the chain with oil, sprocket wear will occur within a short period of time, and if this occurs, the output shaft, which is integrally constructed with the sprocket, must be replaced. Must. Since the casing assumes the role of chain guide and therefore tightly surrounds the sprocket, it is possible to modify the sprocket, for example by increasing the number of bolts or by increasing the diameter or by incorporating a drum for rope winding in multiple layers. That is not possible.

C6 Problems to be Solved by the Invention The object of the present invention is to eliminate these drawbacks, and in particular to provide a structure that is suitable for installation, maintenance and repair, cost-effective, flexible in terms of use, and suitable for automatic installation. Our goal is to provide you with a compact hoist.

d. Means for solving the problem The above problem is characterized in that the motor shaft is supported in a transmission cover located opposite the motor, and the transmission output shaft is mounted on the one hand in the wall of the carrier casing and on the other hand. The solution is to be supported in the end plate.

There is no need to open the motor or transmission for sprocket removal, and the large attachment created during motor removal allows the opening to remove the sprocket or other winding device.
Parts can be replaced without further disassembly. The sprocket change time is only a few minutes (approximately 7 minutes) with the bearing device of the invention, compared to approximately 1/2 to 1 hour with other known chain conveyors of similar construction. be.

In a further embodiment of the invention, the central opening of the carrier casing for the end plate of the motor is larger than the diameter of the sprocket or other winding device, this opening providing a head centering device for the sprocket or the transmission-output shaft. A further winding device can be installed or removed, which is supported by a shiftable seat on the involute gear having the following.

In a further embodiment of the invention, the top surface of the compact hoist has an opening which can be closed by a lid, through which the carrier means can selectively exit. Transmission device 1ti
On the outside thereof, fixing surfaces are preferably provided for control elements, such as, for example, terminal boards and protective fixed lines and pulse generators and/or limit switches. ? ! The U-carrying casing has different holes for screwing in motors of different sizes. This allows very different efficiencies or loads and stroke speeds to be obtained. The additional holes on the carrier casing side also make it possible to flange the hoist laterally, which is advantageous in stationary operation or under certain installation prerequisites.

In the compact hoist of the present invention, at the lower carrier means outlet,
It has a joint surface for selective accommodation of various carrier means guide members.

In a further embodiment of the invention, the casing lid has insertion openings into which for example power supply cables of different dimensions and control cables with tension elements, plug connections, etc. can be arranged. , the various inserts of the electrical equipment for accommodating the electrical switches for limit cut-off are fitted in any desired arrangement in a form-locking manner. Additionally, the system allows for the side insertion of prefabricated and tested electrical equipment external to the compact hoist.

In order to facilitate the installation of the limit switch disconnection device of the hoist, a hole is provided in the underside of the carrier casing, into which a fixing screw can be screwed directly. A high degree of mechanical protection is obtained by integrating the direct switching switching element into an encapsulated electrical installation chamber. In the present invention, an externally mounted lever activates a directly acting switching element via a sealed rubber membrane. This eliminates the need for cables to be guided through from externally located switches, and the entire control electrical device can be pre-wired and installed. Furthermore, the carrier casing has a lateral recess in the area of the carrier means outlet, by means of which the carrier means can be deflected approximately vertically upwards and in this way the overall length of the pulley can be advantageously determined. .

e. Examples Next, the present invention will be explained based on examples using figures. 1st
As the figure shows, a carrier casing 1 with a suspension bolt 2 is connected to an electric motor 11 and an electrocap 22.
and a transmission area having a A transmission output shaft 14 for an interchangeable winding device is arranged in the carrier housing 1 . These winding devices can be replaced with regular sprocket 23a depending on the customer's wishes.
or a double sprocket 23b or a sprocket 23c for a roller chain or a toothed belt roller 23d or a flat lobe drum 23e or a round rope drum 23
It may also be f.

In FIG. 2, the carrier casing 1 has on one side a caning wall 5 with a bearing 6 for a transmission output shaft 14, which is provided with a sprocket 23a. The other housing side has a large central opening 15 for the end plate 12 of the electric motor 11, in which the second bearing 15 of the transmission output shaft 14 is arranged. The transmission cover 17, which is screwed onto the carrier housing 1, is provided with a motor bearing 16 for the transmission end of the motor shaft 13.

FIG. 3 shows that the flange surface 9 of the carrier casing 1 has, in addition to the central opening 4, a number of threaded holes 7 for the connection of motors of different sizes. Flange surface 9
has two fixing holes 8 for connecting the compact hoist to some supporting structure.

From FIGS. 2, 4 and 6, it can be seen that the carrier casing 1 has on its underside an insertion groove 10 for various carrier means guides 28a to 28b, which can be used respectively by the carrier means guides 28a to 28b. carrying means 29
It can be seen that you will be guided. In the second embodiment, this is a chain, for which the carrying casing 1 has on its top side an opening 30 for an insert 31 with a protective screw 32, which is connected to the sprocket 23a. Prevents the chain from being pushed out. The carrier casing 1 has a recess 34, shown in FIG. 5, for guiding the carrier means of FIG.

The transmission 117 has a number of fastening surfaces 25 for the control element 26, which is connected to the electrical device cap 22.
It has a control element 26 projecting into an electrical device installation chamber 33 surrounding the electrical equipment, and an insertion opening 10a for the cable and for the switching element 18b. FIG. 12 shows the electric motor 11 located at a distance from the carrier casing l and the chain wheel 23a coming from the large central opening 4.

Figures 6 to 8 show the components of the screwdriver for the upper hook position A and the lower hook position IB, with the screw 19 screwed into the carrier casing l;
A two-arm lever 20, held by a spring 35, is supported on the head of the screw 19. The lever 20 acts on the actuation of a switching element 21, which is provided with a rubber membrane 24 and is fixed in the transmission cover 17 by an insert 18b.

The two levers 20 are installed by projecting into the holes 3a of the seesaw switch 3 by means of members 20a, and the seesaw switch 3 is
The stationary surface 3b shown in FIG. 8 abuts the carrier guide 28a for the carrier 29 under the action of a spring 35a, which is supported on the head of the screw 19a. The actuating surface 3c of the seesaw switch 3 is arranged roof-like and allows alternating actuation of the switching element when driving the switching stop 36 of the carrier means 29 in the highest or lowest load position.

FIG. 9 shows a compact hoist on a short suspended sheave, in which the flat rope-carrying means 29 are guided from the flat rope drum 23e through the upper opening 30, around the deflection roller 37 and the lower flange 38 to the fixing point 39. ing.

In the embodiment shown in FIG. 10, the carrier casing 1 has a chain direction changing member 28c on its underside, from which the supporting means 29 is guided through a recess 34, around a direction changing roller 37a and onto a load hook 40. However, the load hook 40 can be towed alongside the compact hoist, so the running dimensions C and L are small.

FIG. 11 shows a single chain guide member 28a and a double chain guide member 28b, and the chain deflection member 28c of FIG. 1O, and a pressure roller member 28d for flat ropes.

[Brief explanation of drawings]

1 is a conceptual diagram of a compact hoist with various sprockets or winding devices; FIG. 2 is a horizontal longitudinal section through the compact hoist; FIG. 3 is a side view of the carrying casing of the compact hoist of FIG. 2; Figure 4 is IV of Figure 3.
- A cross-sectional view taken along the IV cutting line, Figure 5 is a plan view of Figure 3, Figure 6 is a bottom view of the support casing and the transmission device lid, and Figure 7 is a - of Figure 6.
■Cross-sectional view taken along the cutting line; Figure 8 is a diagram of the seesaw switch of Figure 6 seen in the Figure 10 is a diagram of a compact hoist on a short suspended line pulley with a flat rope for the load hook suspended in a high position;
FIG. 11 is a side view of various carrying means-guiding members;
The figure is a vertical sectional view of the compact hoist shown in FIG. 2 with the electric motor removed. 3a... Hole, 3c... Operating surface, 5... Casing wall, 7... Threaded hole, 9... Flange surface, 11... Electric motor, 13... Motor shaft, 15. ... Bearing, 17... Transmission device lid, 18a... Switching element, 19... Screw, 20a... Mounting member, 22... Cap for electric device, 3b... Stationary surface, 4... Central opening, 6... Bearing, 8... Fixing hole, 10... Insertion groove, 12... End plate, 14... Transmission device output shaft, 16... Motor bearing , 18...Switching element, 18b...Insert member, 20...Lever, 21...Switching element, 23a...Sprocket rod 23b...Double sprocket, 23C...For roller chain sprocket, 2
3d...Roller for toothed belt, 23e...Drum for flat rope, 23f...
・Drum for round rope, 24...Rubber membrane, 25...Fixing surface, 2
6... Control element, 27... Joint surface, 28
a... Single chain guide member, 28b... Double chain guide member, 28C... Chain direction conversion member, 28d... Press roller member, 29... Supporting means, 30... Opening, 31
...insertion member, 32...protection screw, 33
... Electric device assembly chamber, 34 ... Recess, 35 ... Spring, 36
...Switching stopper, 37, 37a...Direction conversion roller, 38...Lower flange, 39...Fixing point, 4
0...Load hook. -640- 641-

Claims (1)

[Claims] 1) A central supporting casing and an encapsulated transmission arranged opposite the electric motor, the electric motor shaft being coaxial with the transmission and being formed as a hollow shaft and having a sprocket. In a compact hoist guided through the transmission-output shaft carried by etc., the motor shaft (13) is supported in a transmission cover (17) located opposite the motor (11). , the transmission - the output shaft (14) is supported on the one hand in the wall (5) of the carrier casing (1) and on the other hand in the end plate (12), and the electric motor (
Compact hoist, characterized in that the central opening (4) of the carrier casing (1) for the end plate (12) of 11) is larger than the diameter of the sprocket (23a) or other winding device (23b to 23f). 2) The transmission device - the output shaft (14) is connected to at least the sprocket (23a) or the other winding device (23b).
23f) to 23f) and an involute gear wheel with a head centering device and a shifting seat in the area of the transmission bearing (15) on the motor side.
Compact hoist as described in section. 3) The carrier casing (1) has the lid (31) on the upper surface.
) has an opening (30) that can be closed by the opening (30);
2. The involute gear according to claim 1, wherein the carrier means is selectively advanced through the involute gear. 4) A fixing surface (25) is provided on the outside of the transmission cover (17), for example for a terminal board, a protective fixed line, and a control element (26) such as a pulse generator and a limit switch. A compact hoist according to claim 1. 5) The carrier casing (1) has, on the carrier means advancing side, a joint surface (27) for accommodating various carrier means guide members (28a to 28d). Compact hoist as described. 6) Compact hoist according to claim 1, characterized in that the carrier casing (1) is provided on the motor side with a number of threaded holes (7) for the attachment of motors of various sizes. 7) Said carrier casing (1) has additional fastening holes (8)
) and a flange surface (9). 8) The transmission lid (7) has various inserts (
18a to 18b) for receiving the insertion opening (10)
A compact hoist according to claim 1, characterized in that it has the following. 9) If said carrier casing (1) has a lever (
20. Compact hoist according to claim 1, characterized in that it is provided with holes for screws (19) for selective mounting of the hoists (20). 10) A closed electrical equipment installation chamber (33), in which the switching element (21) for end-position switching is formed by the transmission lid (17) and the electrical equipment cap (22);
11. Compact hoist according to claim 10, characterized in that the hoist is located within the hoist and can be actuated from the outside by means of a lever (20) via a rubber membrane (24). 11) Said carrying casing (1) has a transverse recess (34) for guiding the staggered carrying means with load hooks.
) A compact hoist according to claim 10.