JPH0144852Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is used in steel belt coolers, conveyors, etc., using drums with endless belts or chains. The present invention relates to a take-up device that allows a sheave or sprocket wheel to be moved to adjust the tension of an endless belt or chain.

[Conventional technology and its problems]

Belt conveyors and chain tensioning devices are equipped with take-up devices to adjust their tension. However, this device consists of a bearing for a take-up sheave or drum that is slidably provided on the frame of a take-up device or a frame such as a conveyor, a threaded rod that passes through the frame that faces the bearing, and a threaded rod that is threaded into the threaded rod. The combined screw body,
Generally, a spring is interposed between the threaded assembly and the bearing, and the spring pressure is adjusted by rotating the threaded assembly threaded onto the threaded rod. Therefore, even though it is possible to adjust the take-up tension by changing the spring pressure by rotating the threaded body with a tool, in order to move the bearing in the opposite direction to the spring pressure, the bearing must be pushed manually or other tools must be used to move the bearing in the opposite direction to the spring pressure. It is necessary to use This work is particularly difficult when the weight is large or when the tension of the belt or chain is strong.

[Means to solve the problem]

A cover plate 12 in which a threaded assembly is screwed into a protruding threaded rod with one end rotatably locked to a bearing, and a part of this threaded assembly is removably attached to a guide rail and a frame provided on the frame. The end plate is removably provided at the end of the frame, passing through the threaded rod and facing the threaded body, so that it is not rotatable by engaging with the screw rod and is movable in the longitudinal direction of the screw rod. A plurality of plate springs are interposed between the end plate and the screw assembly,
A stopper bolt that locks the threaded assembly is screwed into the cover plate of the frame, which moves and stops the threaded assembly by rotating the screw rod, so that the mounting position can be selectively changed. Drill two or more screw holes.

[Effect]

In the present invention, the threaded body screwed onto the threaded rod is made non-rotatable but movable and is provided on the take-up frame, and an end plate facing the threaded body and detachably provided on the frame. By inserting a coil spring or disc spring in between and changing the mounting position of the stopper bolt that sets the above-mentioned threaded assembly position relative to the frame, it is possible to create a bearing that pivotally supports a drum or sprocket wheel on which an endless belt or chain is stretched. The position of the screw assembly can be adjusted by simply rotating the rotatable protruding screw rod, which not only allows the spring pressure to be adjusted, but also allows the bearing to be moved in the direction of belt tension or in the opposite direction. It is something to do.

〔Example〕

The present invention will be described below based on embodiments shown in the drawings.

In the figure, 1 is the frame of a take-up device that is fixed at a predetermined position on the main body frame of a steel belt type cooler, conveyor, etc. Guide rails 2, 2 are installed on the inner top and bottom surfaces of this frame along the length of the frame. A bearing 3 is disposed along the direction, that is, the direction in which the tension of the belt or chain is applied, and is slidably regulated by the guide rail 2. Also 4
is a screw rod, and the proximal end of the screw rod is rotatably engaged with a portion of the bearing. This is a general method in which the base end of the threaded rod is fitted into a part of the bearing and the collar 4a is locked. That is, a window hole 3H is bored on both sides of the rear end of this bearing 3, and a collar 4a of a size that can be inserted into the window hole from the side of the bearing 3 is inserted into this window hole 3H. The base end of the screw rod 4 inserted into the bearing from the rear end of 3 is fitted into this collar 4a, and the base end of the screw rod 4 and the collar are screwed together to make one body, so that when the screw rod rotates, this collar also Although the collar rotates within the window hole of the bearing, the collar is locked with the window hole of the bearing in the longitudinal direction of the screw rod. The tip end of the threaded rod 4 is made to protrude outward from the frame 1 so that it can be rotated.

Further, a nut-shaped threaded body 5 is screwed onto the threaded rod 4, and a collar is protruded from the threaded body 5, or a guide plate 6 is integrally provided on the threaded body as shown in the figure.
This plate 6 is provided with a notch 6a that fits into the guide rail 2, so that the threaded body and the guide plate 6 are integrated and movable along the guide rail in a non-rotatable state.

In addition, the other end of the screw rod is loosely fitted (simply inserted) into the end plate 8 so that the screw rod protrudes from the end of the frame, and the end plate 8 is made to be easily removable with screws etc. A plurality of disc springs 9 are interposed between the end plate 8 and the threaded assembly, ie, the guide plate, to obtain the desired elasticity.

In order to arrange the plurality of disc springs concentrically, guide pins 7, 7 are arranged parallel to the threaded rod so as to receive the bottom side of the outer periphery of the disc spring between the guide plates and the end plates. Also, 10 in the figure is frame 1
A stopper 11 provided on the inner bottom surface of the frame and at the end position of the guide rail is selectively screwed into at least two screw holes 12a and 12b drilled in a top plate 12 which is screwed to the top of the frame using a stopper bolt. and set it up accordingly.

Next, the assembly and adjustment of the take-up device will be explained. First, the top plate 12 screwed to the top surface of the frame 1 is removed from the frame, and the bearing 3 with the threaded rod 4 provided with the threaded body 5 and the plate 6 protruding is installed as shown in FIG.
As shown in , insert the screw rod into the frame from the position where the top plate on the top surface of the frame is removed, with the other end of the screw rod first, and make the screw rod 4 protrude outside the frame from the top of the frame, and then insert the bearing 3 into the frame. Fits and locks into the guide rail 2 of. Next, as shown in Figure 2, place the top plate on the top of the frame, fit the guide rail to the top of the bearing, fix the top plate to the frame with screws, and first tighten the stopper bolts on the outside. Remove it from the screw hole 12a. In this state, the screw rod is rotated to move the bearing and stopper to the left to a position slightly past the inner screw hole 12b. Then, as shown in FIG. 3, the stopper bolt 11 is set in the screw hole 12b. In this state, a disc spring is inserted into the outer periphery of the threaded rod in a desired shape, and the end plate 8 is attached. At this time, as shown in FIG. 4, even if a plurality of disc springs are fitted and supported by the threaded rod, the distance between the guide plate and the end plate, which are secured by the stopper bolts 11, is larger than the thickness of the plural disc springs. is large, the disc spring is simply fitted into the threaded rod, and its elastic force is not acting on the bearing 3 and the end plate 8, so it is difficult to attach the end plate 8 to the frame 1. It's easy to do. Next, insert the stopper bolt 11 into the screw hole 12b.
When it is pulled out and the screw rod is rotated, the threaded body moves in the direction of rotation of the screw rod, and is set to the required set length, that is, the predetermined compressed length of the disc spring, as shown in FIG. As a result, the resilient force of the disc spring acts on the bearing via the guide plate, the threaded body, and the threaded rod. In addition, when removing the end plate, since the elastic force of the disc spring acts on this end plate, first move this bearing to the side opposite to the end plate. This rotates the screw rod, moves the screw assembly to the inner screw hole 12b, releases the compression of the disc spring, removes the end plate, and removes the disc spring. Next, rotate the threaded rod in the opposite direction to move the threaded assembly to the outer threaded hole, and then insert the stopper bolt into threaded hole 1.
2a and further rotate the threaded lever, the bearing will move because the threaded assembly is locked by the stopper bolt. In this way, the bearing can be moved in any direction by rotating the screw rod.

[Effect of idea]

According to the present invention, a threaded body that is locked to a guide rail and does not rotate is provided on the threaded rod protruding from the bearing, and this threaded body can be moved by changing the mounting position of the stopper bolt. Assembling and disassembling the assembly becomes simple, and the bearing can be easily moved by rotating the screw rod, which is particularly effective in steel belt type coolers.

[Brief explanation of the drawing]

1 is a front view, FIG. 2 is a plan view, FIG. 3 is an explanatory view of the screw assembly, and FIG. 4 is an explanatory view of the assembly of the take-up device. 1... Frame, 2... Guide rail, 3...
Bearing, 4... Screw rod, 5... Screw assembly, 6... Guide plate, 7... Guide pin, 8... End plate, 9
... disc spring, 10 ... stopper, 11 ... stopper bolt.

Claims (1)

[Scope of utility model registration request] A cover plate 12 in which a threaded assembly is screwed into a protruding threaded rod with one end rotatably locked to a bearing, and a part of this threaded assembly is removably attached to a guide rail and a frame provided on the frame. The end plate is removably provided at the end of the frame, passing through the threaded rod and facing the threaded body, so that it is not rotatable by engaging with the screw rod and is movable in the longitudinal direction of the screw rod. A plurality of plate springs are interposed between the end plate and the screw assembly,
A stopper bolt that locks the threaded assembly is screwed into the cover plate of the frame, which moves and stops the threaded assembly by rotating the screw rod, so that the mounting position can be selectively changed. A take-up device with two or more screw holes.