CN205745030U - A kind of testing machine clutch-brake of adjustable clearance - Google Patents

Abstract

The utility model discloses a clutch brake of a testing machine with adjustable clearance, which comprises a main machine body, a main shaft and a transmission shaft arranged in the main machine body, and a braking magnet, a friction plate and a braking shaft distributed along the axial direction are arranged outside the main shaft. The connecting piece, the brake magnet is connected to the main machine body, the friction plate is connected to the brake connecting piece, an adjustable braking gap is formed between the brake magnet and the friction plate; the drive shaft is equipped with clutches distributed along its axial direction The magnet, the armature and the clutch connector are connected into one body by the armature, the clutch connector and the brake connector. The clutch brake of the testing machine with adjustable gap described in the utility model can realize the functions of clutching and braking in the limited space behind the main shaft of the impact testing machine, and can effectively and conveniently adjust the braking gap. The overall structure of the utility model Compact with minimal loss of rotational energy.

Description

A Test Machine Clutch Brake with Adjustable Clearance

technical field

The utility model relates to a clutch brake, in particular to a clutch brake of a testing machine with an adjustable gap applied to an impact testing machine.

Background technique

Due to its characteristics, the impact testing machine is dangerous during the test operation. Therefore, an emergency braking device should be added to the main shaft. However, due to structural limitations, the space behind the main machine of the impact testing machine is small, and the brake needs a reasonable clearance. This requires that the brake has a compact structure, takes up little space, can easily adjust the brake clearance, and has little rotational energy loss.

Utility model content

Aiming at the defects of the prior art, the utility model provides a testing machine clutch brake with adjustable clearance, which realizes the functions of clutch and brake in a limited space, and can effectively and conveniently adjust the brake clearance.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a clutch brake of a testing machine with adjustable clearance, including a main machine body, a main shaft and a transmission shaft arranged in the main machine body, the main shaft and the transmission shaft have the same height and the transmission The shaft is located at the rear end of the main shaft, and there are brake magnets, friction plates and brake connectors distributed along its axial direction outside the main shaft. The brake magnets are connected to the main engine body, the friction plates are connected to the brake connectors, and the brake magnets An adjustable brake gap is formed between the friction plate and the brake connecting piece is fixed on the main shaft through an expansion ring. There is also a supporting bearing on the main shaft. One side of the supporting bearing is in contact with the braking connecting piece, and the other side is passed by the The tightening nut is tightened; the transmission shaft is provided with a clutch magnet, an armature and a clutch connecting piece distributed along its axial direction, and the armature, the clutch connecting piece and the braking connecting piece are connected into one body.

In order to ensure the realization of clutch and brake functions in a limited space, threaded through holes are processed on the brake connector, through holes are processed on the clutch connector, countersunk holes are processed on the armature, screws pass through threaded through holes, through holes and The counterbore connects the three into one.

According to the clutch brake of the testing machine with adjustable gap in the utility model, the adjustment range of the brake gap is 0.8-1.2 mm.

In order to ensure the convenient adjustment of the brake clearance, the support bearing is fitted into the hole of the main machine body through the shaft hole, and the position is fixed by the tightened nut and the brake connector.

In the clutch brake of the testing machine with adjustable clearance described in the utility model, the clutch magnet is screwed on the transmission shaft through a nut, and the clutch magnet is connected with the armature.

Beneficial effects of the utility model: the clutch brake of the testing machine with adjustable clearance in the utility model can realize the functions of clutch and brake in the limited space behind the main shaft of the impact testing machine, and can effectively and conveniently adjust the brake. The overall structure of the utility model is compact, and the loss of rotational energy is extremely small.

Description of drawings

Fig. 1 is the plain structural representation of the utility model;

In the figure: 1. Main engine body, 2. Brake magnet, 3. Friction plate, 4. Brake connector, 5. Support bearing, 6. Tightened nut, 7. Expansion ring, 8. Clutch connector, 9 , armature, 10, clutch magnet, 11, transmission shaft, 12, nut, 13, main shaft, 14, carbon brush.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.

As shown in Figure 1, a clutch brake of a testing machine with adjustable clearance includes a main machine body 1, a main shaft 13 and a transmission shaft 11 arranged in the main machine body 1, the main shaft 13 is at the same height as the transmission shaft 11 and the transmission shaft 11 is located on the main shaft 13 rear end, the main shaft 13 is provided with brake magnets 2, friction plates 3 and brake connectors 4 distributed along its axial direction, the brake magnets 2 are connected to the host body 1 by screws, and the friction plates 3 are The moving connector 4 is connected together, and an adjustable braking gap is formed between the brake magnet 2 and the friction plate 3. The brake connector 4 is fitted with the friction plate 3 on the main shaft 13 through the shaft hole, and the expansion ring 7. Tighten the brake connecting piece 4 and the main shaft 13 into a whole. Main shaft 13 is also provided with support bearing 5 outside, and support bearing 5 is installed in the hole of main engine body 1 by shaft hole, and support bearing 5 one side contacts with braking connector 4, and the other side is screwed with nut 6 by tightening. The support bearing 5 is floating with respect to the main shaft 13, and can freely move in its axial direction, and its position is fixed by the end face of the brake connecting piece 4 and the tightened nut 6. The brake clearance is adjusted through the support bearing 6 and the brake connector 4 .

The transmission shaft 11 is provided with a clutch magnet 10, an armature 9 and a clutch connector 8 distributed along its axial direction. The clutch magnet 10 is screwed on the transmission shaft 11 by a nut 12. The clutch magnet 10 is connected with the armature 9, and the clutch The magnet 10 is powered via carbon brushes 14 . The armature, the clutch connector and the brake connector are connected as one, that is, a threaded through hole is processed on the brake connector 4, a through hole is processed on the clutch connector 8, a countersink is processed on the armature 9, and the screw passes through the thread The through hole, the through hole and the counterbore connect the three into one, and the clutch connector 8 is located between the armature 9 and the brake connector 4 . Connecting the armature 9 , the clutch connector 8 and the brake connector 4 can realize the clutch and brake functions in a limited space without affecting the clutch and brake functions.

When it is necessary to adjust the brake clearance, loosen the expansion ring 7. At this time, the brake connector 4 can move freely in the axial direction of the main shaft 13, and then select the nut 6 to be tightened in the forward or reverse direction, and tap the brake Connecting piece 4, increase or decrease the braking clearance until the braking clearance is within 0.8~1.2mm, then tighten the bolts of the expansion ring 7, so that the braking connecting piece 4 and the main shaft 13 are tightly held together, and then locked By tightening the nut 6, the adjustment of the brake gap can be completed.

The clutch brake of the testing machine with adjustable clearance described in the utility model connects the clutch system and the braking system into one body, and can complete the clutch and braking functions in the limited space behind the main shaft of the impact testing machine, and can be adjusted effectively and conveniently. Braking clearance, the overall structure of the utility model is compact, and the loss of rotation capacity is extremely small.

The above description is only the basic principles and preferred embodiments of the present utility model, and the improvements and replacements made by those skilled in the art according to the present utility model belong to the protection scope of the present utility model.

Claims (5)

1. the testing machine clutch-brake of an adjustable clearance, it is characterised in that: include main frame body, be arranged in main frame body Main shaft and power transmission shaft, main shaft is identical with power transmission shaft height and power transmission shaft is positioned at rear-end of spindle, and main shaft is externally provided with along it axial Brake magnet, friction plate and the retaining connection of distribution, brake magnet is connected on main frame body, and friction plate is connected to braking even On fitting, forming adjustable brake clearance between brake magnet and friction plate, retaining connection is fixed on main shaft by distensible ring On, main shaft is additionally provided with spring bearing, spring bearing side contacts with retaining connection, and opposite side is by being screwed by jack panel； Power transmission shaft is externally provided with the clutch magnet along its axial distribution, armature and clutch connector, and armature, clutch connector and braking connect Part links into an integrated entity.

The testing machine clutch-brake of adjustable clearance the most according to claim 1, it is characterised in that: add on retaining connection Work has tapped through hole, and clutch connector is machined with through hole, and armature is machined with counter sink, and screw passes through tapped through hole, through hole With counter sink, three is linked into an integrated entity.

The testing machine clutch-brake of adjustable clearance the most according to claim 1, it is characterised in that: the adjustment of brake clearance Scope is 0.8～1.2mm.

The testing machine clutch-brake of adjustable clearance the most according to claim 1, it is characterised in that: described spring bearing leads to Cross in the hole that shaft hole matching is installed into main frame body, by by jack panel and retaining connection fixed position.

The testing machine clutch-brake of adjustable clearance the most according to claim 1, it is characterised in that: clutch magnet passes through spiral shell Mother is tightened on power transmission shaft, and clutch magnet links together with armature.