Independent band-type brake detection mechanism for traction machine

Abstract

The utility model discloses an independent band-type brake detection mechanism for a traction machine, which comprises a mounting plate (1) detachably connected to an ejector rod or a brake arm, a pin shaft (2) is rotatably connected to the mounting plate (1), the pin shaft (2) and the mounting plate (1) are connected with each other through an elastic piece (3), one end of the pin shaft (2) is connected with a swing rod (4), the other end of the pin shaft (2) is connected with a pressing plate (5), and the pressing plate (5) is connected with the swing rod (4). A microswitch (6) which is detachably connected with the mounting plate (1) is arranged on the outer side of the pressing plate (5); a handle (401) is formed on one side of the swing rod (4), and the other side of the swing rod (4) extends to the outer side of the mounting plate (1) and is connected with a collision block (7). According to the utility model, the positioning and installation of operators can be facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hoisting machine brake detection mechanism, especially an independent brake detection mechanism for hoisting machine. BACKGROUND

[0002] At present, the drum brake for elevator hoisting machine is mainly composed of electromagnet, jacking rod, brake arm and compression spring, when the hoisting machine is in non-braking state, the jacking rod controlled by the electromagnet pushes the brake arm, so that the brake arm is in open state by overcoming the elastic force of the compression spring; when the hoisting machine is switched to braking state, the jacking rod is controlled by the electromagnet to retract, so that the brake arm is adhered to the hoisting wheel under the action of the elastic force of the compression spring, realizing the braking function. At the same time, in order to realize the detection of the braking state of the elevator hoisting machine, the manufacturer will also install a detection sensor outside the brake arm, so that the brake arm can trigger the detection sensor during braking, realizing the braking detection function.

[0003] On the basis of the above, the working mode of the existing detection sensor is to install the micro switch on the brake frame or the electromagnet shell inside the brake arm, and to threadedly connect the pressure rod on the inside of the brake arm, so that when the brake arm makes braking action, the pressure rod moves inward with the brake arm and extrudes the detection sensor, realizing the detection function. But the defects of this detection mechanism are that, on the one hand, it is limited by the shape and size of the drum brake, making it difficult for the manufacturer to install and fix the micro switch during actual operation; on the other hand, when the pressure rod does not move to the position and the micro switch is pressed to the direct retraction state, the subsequent action of the pressure rod will hard extrude the micro switch, causing the micro switch to be damaged under pressure. Due to this action limitation, the operator also needs to repeatedly adjust the position of the pressure rod during debugging, not only to ensure the stable triggering of the micro switch by the pressure rod during braking, but also to prevent the direct damage of the micro switch caused by excessive extrusion of the pressure rod, thereby increasing the installation difficulty of the operator.

[0004] Therefore, the existing detection sensor for hoisting machine brake has the problem of inconvenient installation. INVENTION CONTENTS

[0005] The utility model aims at providing an independent brake detection mechanism for hoisting machine. It can facilitate the positioning and installation of the operator.

[0006] The technical scheme of the utility model: the independent brake detection mechanism for hoisting machine, including the installation plate that can be detachably connected on the jacking rod or brake arm, the pin shaft is rotatably connected on the installation plate, the pin shaft and the installation plate are connected with each other through the elastic piece, one end of the pin shaft is connected with the swing rod, the other end of the pin shaft is connected with the pressing plate, the outside of the pressing plate is equipped with the micro switch that can be detachably connected with the installation plate; one side of the swing rod forms the handle, the other side of the swing rod extends to the outside of the installation plate and is connected with the impact block;

[0007] The swing rod is used for colliding with external facilities and forming rotation after braking of the brake arm;

[0008] The pressing plate is used for extruding the micro switch after rotation of the swing rod.

[0009] In the foregoing independent brake detection mechanism for traction machine, the middle part of the swing rod is rotationally connected with the pin shaft, a limiting plate is arranged on the pin shaft at one side of the swing rod, and a limiting nut is threadedly connected with the pin shaft at the other side of the swing rod, and the limiting nut is used for extruding and limiting the swing rod after being screwed.

[0010] In the foregoing independent brake detection mechanism for traction machine, the pressing plate and the pin shaft are connected with each other through the fixing nut, and the elastic member is a compression spring arranged at one side of the micro switch.

[0011] In the foregoing independent brake detection mechanism for traction machine, one end of the pin shaft is threadedly connected with a reset block, one side of the reset block is connected with the elastic member, and the other side of the reset block is connected with the pressing plate through the fixing nut; the elastic member is a torsion spring sleeved outside the pin shaft, and two ends of the torsion spring are connected with the mounting plate and the reset block respectively.

[0012] In the foregoing independent brake detection mechanism for traction machine, the pressing plate is L-shaped, one end of the pressing plate is sleeved outside the pin shaft and rotationally connected with the pin shaft, and the other end of the pressing plate extends to the outside of the pin shaft and forms a triggering surface for extruding the micro switch.

[0013] In the foregoing independent brake detection mechanism for traction machine, the collision block and the swing rod are connected with each other through the screw.

[0014] Compared with the prior art, the utility model has the following characteristics:

[0015] (1) The utility model discloses a structure cooperation of mounting plate, pin shaft and swing rod, so that the swing rod can move along with the mounting plate to the brake seat direction when the brake is braked, the swing rod contacts the brake frame or the electromagnet shell and forms rotation in the moving process, the pressing plate extrudes the micro switch on the mounting plate after rotation and triggers, and the detection function is realized.

[0016] (2) The connection structure of the pin shaft, the swing rod and the pressing plate is limited, so that the rotation angle of the swing rod and the pressing plate on the pin shaft can be adjusted respectively when debugging, so that the pressing plate can rotate to the stable triggering position when the brake arm moves to the brake position, the use stability of the utility model is improved, and the positioning of the operator is facilitated.

[0017] (3) when the pressing plate rotates to the trigger position and the brake arm is not moved in place, at this time the pressing plate is hindered by the micro switch and cannot continue to rotate with the pin shaft, and relative rotation is formed with the pin shaft, thereby effectively preventing the micro switch from being pressed and broken during use of the elevator, and further facilitating positioning of the pressing plate by the operator;

[0018] Therefore, the positioning and installation of the operator can be facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the installation schematic view of the utility model;

[0020] Figure 2 is the cross-sectional view of example 1 at the pin shaft;

[0021] Figure 3 is the cross-sectional view of example 2 at the pin shaft.

[0022] The marks in the drawings are: 1 - mounting plate, 2 - pin shaft, 3 - elastic member, 4 - swing lever, 5 - pressing plate, 6 - micro switch, 7 - impact block, 8 - reset block, 9 - limiting nut, 10 - fixing nut, 201 - limiting plate, 401 - handle. DETAILED DESCRIPTION

[0023] The utility model will be further described below in combination with the drawings and examples, but not as the basis for limiting the utility model.

[0024] Example 1. Independent brake detection mechanism for traction machine, constitutes as shown in Figure 1 and 2 , including the mounting plate 1 that can be detachably connected on the top rod on both sides of the brake, the pin shaft 2 is rotatably connected on the mounting plate 1, the pin shaft 2 and the mounting plate 1 are connected with each other through the elastic member 3, one end of the pin shaft 2 is connected with the swing lever 4, the other end of the pin shaft 2 is connected with the pressing plate 5, the outer side of the pressing plate 5 is provided with the micro switch 6 that can be detachably connected with the mounting plate 1; one side of the swing lever 4 forms the handle 401, the other side of the swing lever 4 extends to the outside of the mounting plate 1 and is connected with the impact block 7;

[0025] The swing lever 4 is used for colliding with external facilities and forming rotation after the brake arm is braked;

[0026] The pressing plate 5 is used for extruding the micro switch 6 with the rotation of the swing lever 4, so that the micro switch 6 is extruded to the trigger state after the brake arm is moved in place, and the detection function is realized.

[0027] The middle part of the swing lever 4 is connected with the pin shaft 2, the pin shaft 2 on one side of the swing lever 4 is provided with a limiting plate 201, and the pin shaft 2 on the other side of the swing lever 4 is threadedly connected with a limiting nut 9, which is used to limit the swing lever 4 after being screwed to make the swing lever 4 and the pin shaft 2 rotate synchronously.

[0028] The fixed nut 10 is used to connect the press plate 5 and the pin shaft 2, and a rubber pad can be arranged between the fixed nut 10 and the press plate 5, so that the press plate 5 can be adjusted by the rubber pad, that is, when the press plate 5 is not hindered, the press plate 5 can rotate with the pin shaft 2 under the action of friction, and when the press plate 5 is hindered to the limit position, the press plate 5 can overcome the friction to rotate relative to the pin shaft 2, so as to prevent the press plate 5 from being damaged after being pressed hard.

[0029] The press plate 5 is L-shaped, one end of the press plate 5 is sleeved on the outside of the pin shaft 2 and is connected with the pin shaft 2, and the other end of the press plate 5 extends to the outside of the pin shaft 2 and forms a trigger surface for pressing the micro switch 6.

[0030] The collision block 7 is made of nylon or rubber, and the collision block 7 and the swing lever 4 are connected by screws.

[0031] When the brake is in the braking state, the electromagnet drives the ejector rod to retract, and the mounting plate 1 moves towards the electromagnet along with the retraction of the ejector rod. When the collision block 7 on the swing lever 4 moves to contact the outer wall of the electromagnet, the swing lever 4 cannot continue to move along with the mounting plate 1 due to the obstruction of the electromagnet, and the swing lever 4 rotates relative to the mounting plate 1, so that the press plate 5 at the lower end of the pin shaft 2 rotates towards the micro switch 6, and the micro switch 6 is completely pressed after the ejector rod is completely retracted, that is, the micro switch 6 is triggered to realize the detection function. After the ejector rod is retracted, the press plate 5 can be reset by the compression spring, so that the swing lever 4 returns to the initial state.

[0032] Embodiment 2. The independent brake detection mechanism for the traction machine is constituted as shown in Figure 1 and 3 The mounting plate 1 is connected on both sides of the brake by screws, the pin shaft 2 is connected with the mounting plate 1, the pin shaft 2 and the mounting plate 1 are connected by the elastic element 3, one end of the pin shaft 2 is connected with the swing lever 4, the other end of the pin shaft 2 is connected with the press plate 5, and the micro switch 6 is detachably connected with the mounting plate 1 on the outside of the press plate 5; one side of the swing lever 4 forms a handle 401, and the other side of the swing lever 4 extends to the outside of the mounting plate 1 and is connected with the collision block 7.

[0033] The swing rod 4 is used for colliding with external facilities and forming rotation after the brake arm is braked;

[0034] The pressing plate 5 is used for extruding the micro switch 6 along with the rotation of the swing rod 4, so that the micro switch 6 is extruded to the triggering state after the brake arm is moved to the position, and the detection function is realized.

[0035] The middle part of the swing rod 4 is rotationally connected with the pin shaft 2, the pin shaft 2 on one side of the swing rod 4 is provided with a limiting plate 201, and the pin shaft 2 on the other side of the swing rod 4 is threadedly connected with a limiting nut 9, which is used for extruding and limiting the swing rod 4 after being screwed to cooperate with the limiting plate 201, so that the swing rod 4 and the pin shaft 2 are in the synchronous rotation state.

[0036] One end of the pin shaft 2 is threadedly connected with a reset block 8, one side of the reset block 8 is connected with an elastic element 3, and the other side of the reset block 8 is connected with the pressing plate 5 through a fixing nut 10; the elastic element 3 is a torsion spring which is sleeved outside the pin shaft 2, and two ends of the torsion spring are connected with the mounting plate 1 and the reset block 8 respectively.

[0037] The pressing plate 5 is L-shaped in shape, one end of the pressing plate 5 is sleeved outside the pin shaft 2 and rotationally connected with the pin shaft 2, and the other end of the pressing plate 5 extends to the outside of the pin shaft 2 and forms a triggering surface for extruding the micro switch 6.

[0038] The collision block 7 is made of nylon or rubber, and the collision block 7 and the swing rod 4 are connected with each other through screws.

[0039] Compared with the embodiment 1, the mounting position of the mounting plate 1 is adjusted in the embodiment, so that the mounting plate 1 can move along with the brake arm during the braking process, and the triggering and detection effects can also be realized. By connecting the reset block 8 with the mounting plate 1 through the torsion spring, the length direction space occupied by the pressing plate 5 can be saved, so that the length dimension of the mechanism is reduced, and the applicability of the utility model is improved.

Claims

1. A separate brake detection mechanism for a traction machine, characterized by: The utility model provides a kind of brake handle, including the mounting plate (1) of detachable connection on top rod or brake arm, pivotally connected with pin shaft (2) on mounting plate (1), pin shaft (2) and mounting plate (1) are connected by elastic element (3) each other, one end of pin shaft (2) is connected with swing rod (4), the other end of pin shaft (2) is connected with pressing plate (5), the outside of pressing plate (5) is equipped with microswitch (6) of detachable connection mounting plate (1);The handle (401) is formed on one side of the swing rod (4), and the other side of the swing rod (4) extends to the outside of the mounting plate (1) and is connected with the impact block (7); The swing rod (4) is used to collide with external facilities and form rotation after the brake arm is braked; The pressing plate (5) is used to extrude microswitch (6) with the rotation of swing rod (4).

2. The independent brake detection mechanism for a traction machine according to claim 1, characterized by: The middle part of the swing rod (4) is pivotally connected with pin shaft (2), and the pin shaft (2) on one side of the swing rod (4) is equipped with limit plate (201), and the pin shaft (2) on the other side of the swing rod (4) is threadedly connected with limit nut (9), and the limit nut (9) is used to extrude and limit the swing rod (4) after being screwed and matched with the limit plate (201).

3. The independent brake detection mechanism for a traction machine according to claim 1, characterized by: The pressing plate (5) and pin shaft (2) are connected by fixed nut (10), and the elastic element (3) is compression spring arranged on one side of microswitch (6).

4. The independent brake detection mechanism for a traction machine according to claim 1, characterized by: One end of the pin shaft (2) is threadedly connected with reset block (8), one side of the reset block (8) is connected with elastic element (3), and the other side of the reset block (8) is connected with pressing plate (5) through fixed nut (10);The elastic element (3) is torsion spring sleeved outside pin shaft (2), and both ends of the torsion spring are connected with mounting plate (1) and reset block (8) respectively.

5. The independent brake detection mechanism for a traction machine according to claim 3 or 4, characterized by: The outer shape of the pressing plate (5) is L-shaped, one end of the pressing plate (5) is sleeved outside pin shaft (2) and pivotally connected with pin shaft (2), and the other end of the pressing plate (5) extends to the outside of pin shaft (2) and forms trigger surface for extruding microswitch (6).

6. The independent brake detection mechanism for elevator hoist machines as defined in claim 1, wherein: The impact block (7) and the swing rod (4) are connected by screws.

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