Connecting structure of straight beam and lifting mechanism

Abstract

The utility model discloses a connecting structure of a straight beam and a lifting mechanism. The lifting mechanism is arranged above the bottom of the straight beam and located below the top of the straight beam. The lifting mechanism comprises a lifting rod, a rotating arm and a transmission mechanism I connected with the lifting rod and the rotating arm, the lifting rod is vertically arranged, and a plurality of lifting seats for the lifting rod to penetrate through and a hinge seat for mounting the rotating arm are arranged on the straight beam; the first transmission mechanism is used for converting lifting motion of the lifting rod into rotating motion of the rotating arm, and the rotating arm is further connected with a shifting arm used for driving the safety tongs wedge block to move. According to the elevator safety braking device, the adverse effect on the top layer space and the bottom pit space is reduced while the elevator is safely braked.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of connection structure of straight beam and pull mechanism, belong to elevator safety field. BACKGROUND

[0002] Elevator pull mechanism is the key component in elevator safety system, mainly used to trigger safety clamp when elevator overspeed, make elevator stop running, prevent car falling, protect passenger safety.The specific working principle is: when elevator operating speed exceeds the set value, speed governor acts, pull mechanism is driven by pulling steel wire rope, after pull mechanism acts, wedge of safety clamp is pulled, and it is clamped on guide rail, elevator car is stopped, to prevent further falling.

[0003] Pull mechanism is generally arranged on the upper beam or lower beam of car frame, when arranged on the upper beam, pull mechanism occupies certain top space, when arranged on the lower beam, pull mechanism occupies certain pit space, thus, it is not conducive to elevator installation in the hoistway with small top space and small pit space. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of prior art, the application provides a kind of connection structure of straight beam and pull mechanism, while realizing safety brake elevator, reduce the occupation of top space and pit space, suitable for elevator installation in the hoistway with small top space and small pit space.

[0005] A kind of connection structure of straight beam and pull mechanism, pull mechanism is located above the bottom of straight beam and below the top of straight beam;

[0006] Pull mechanism includes pull rod, rotating arm, transmission mechanism one connecting the pull rod and the rotating arm, wherein, pull rod is vertically arranged, straight beam is provided with a plurality of pull seats for pull rod to pass through and hinged seat for installing the rotating arm, transmission mechanism one is used to convert the lifting movement of pull rod into the rotating movement of rotating arm, rotating arm is further connected with the actuating arm for driving the movement of safety clamp wedge.

[0007] Preferably, the transmission mechanism one includes transmission arm, one end of the transmission arm is hinged with the rotating arm, and the other end of the transmission arm is hinged with the pull rod.

[0008] Preferably, the pull rod includes pull head located at the bottom, and the pull head is hinged with the transmission arm.

[0009] Preferably, the bottom of straight beam is fixedly provided with lower beam, and the lower beam includes straight beam connecting part, upper turning edge part connected with the upper part of the straight beam connecting part, and lower turning edge part connected with the lower part of the straight beam connecting part.

[0010] The hinged seat is connected to the upper turning edge part, the lower turning edge part and the straight beam connecting part at the same time.

[0011] Preferably, the rotating arm is fixedly provided with a dial plate with the rotating center axis of the rotating arm as the center axis, and the outer circumferential surface of the dial plate is provided with a positioning groove for cooperating with the safety clamp limiting switch.

[0012] Preferably, the rotating arm is fixedly provided with a rotating shaft I hinged with the hinge seat, and the dial plate is coaxially connected with the rotating shaft I.

[0013] Preferably, the lifting rod is sleeved with a reset spring for resetting the lifting rod.

[0014] Preferably, the lifting rod is provided with a spring seat, and the reset spring is arranged between the spring seat and the lifting seat.

[0015] Preferably, the lifting rod is provided with a connecting assembly for connecting the lifting steel wire rope; the connecting assembly comprises a connecting plate I connected with the lifting rod and a connecting plate II connected with the connecting plate I and used for fixing the lifting steel wire rope.

[0016] In summary, the utility model has the following beneficial effects:

[0017] 1: the connecting structure of the straight beam and the lifting mechanism in the utility model, the lifting mechanism is installed above the bottom of the straight beam and below the top of the straight beam, relative to the mode that the lifting mechanism is installed on the upper beam or the lower beam in the prior art, the utility model, while realizing the safety brake elevator, reduces the occupation of the top space and the pit space, and is suitable for the elevator installed in the hoistway with small top space and small pit space.

[0018] 2: the connecting structure of the straight beam and the lifting mechanism in the utility model, the hinge seat is connected on the lower beam fixed on the bottom of the straight beam, and is simultaneously connected on the upper turning edge portion, the lower turning edge portion and the straight beam connecting portion of the lower beam, realizes the stable installation of the hinge seat by using the existing structure, and does not need to set other related structures capable of stably connecting the hinge seat.

[0019] 3: the connecting structure of the straight beam and the lifting mechanism in the utility model, the dial plate with the rotating center axis of the rotating arm as the center axis is fixedly arranged on the rotating arm, and the outer circumferential surface of the dial plate is provided with the positioning groove for cooperating with the safety clamp limiting switch, once the rotating arm rotates, the dial plate on the rotating arm plays the role of amplifying the brake effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a structural schematic view of the connecting structure of the straight beam and the lifting mechanism;

[0021] Fig. 2 It is an arrangement drawing of the dial plate and the safety clamp limiting switch;

[0022] Fig. 3This is a schematic diagram showing the connection between the lever arm and the lever disc. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example:

[0025] like Figs. 1-3 As shown, a connection structure between a straight beam and a lifting mechanism is an integral structure formed by the lifting mechanism and the straight beam after the lifting mechanism is installed on the straight beam. The lifting mechanism is located above the bottom of the straight beam and below the top of the straight beam. The lifting mechanism includes a lifting rod 11, a rotating arm 12, and a transmission mechanism 13 connecting the lifting rod 11 and the rotating arm 12. This is a known structure of a lifting mechanism. However, in this embodiment, the lifting rod 11 is vertically arranged, and its upper part is used to connect the lifting steel wire rope. The lifting steel wire rope is not shown in the figure. The side of the straight beam is provided with several lifting seats 31 for mounting the lifting rod 11. The lifting rod 11 passes through the lifting seats 31. The lifting rod 11 moves vertically on the lifting seats 31 under the pulling action of the lifting steel wire rope. The rotating arm 12 can be arranged below the lifting rod 11. The straight beam is also provided with A hinge seat 32 is provided for mounting the rotating arm 12. The hinge seat 32 can be directly connected to the side of the straight beam. In this embodiment, the hinge seat 32 is connected to the straight beam by connecting to the lower beam 0 fixed to the bottom of the straight beam. The conventional structure of the lower beam 0 includes a straight beam connecting part 01, an upper flange part 02 connected to the upper part of the straight beam connecting part 01, and a lower flange part 03 connected to the lower part of the straight beam connecting part 01. When the hinge seat 32 is specifically connected to the lower beam 0, the hinge seat 32 is placed in the space of the lower beam 0 and simultaneously connected to the upper flange part 02, the lower flange part 03, and... The straight beam connection part 01 allows the existing lower beam 0 to be used to install the hinge seat 32, and achieves a more stable installation by connecting it to the lower beam 0 at multiple locations, eliminating the need for other structures to stabilize the hinge seat 32. The transmission mechanism 13 converts the motion of the lifting rod 11 into the rotational motion of the rotating arm 12. Specifically, the transmission mechanism 1 includes a transmission arm, one end of which is hinged to the rotating arm 12, and the other end of which is hinged to the lifting rod 11. Thus, the transmission arm, rotating arm 12, and lifting rod 11 form a crank-slider mechanism. 11 is equivalent to the slider in the crank-slider mechanism. Of course, in order to facilitate the installation of the rotating arm 12, the bottom of the lifting rod 11 is provided with a lifting head 111 that is hinged to the transmission arm. The lifting head 111 may be a block or a plate. The rotating arm 12 is also connected to a lever arm 14 for driving the movement of the safety clamp wedge block. One end of the lever arm 14 is hinged to the rotating arm 12, and the other end of the lever arm 14 is hinged to the safety clamp wedge block. When the rotating arm 12 rotates, it drives the lever arm 14 to move. When the lever arm 14 moves, it drives the safety clamp wedge block to lift, so as to engage with the guide rail and thus achieve braking.

[0026] The connecting structure formed by the straight beam and the pulling mechanism can realize safe braking of the elevator, and the pulling mechanism is installed above the bottom of the straight beam and below the top of the straight beam, so that the top space and the pit space are reduced compared to the prior art, and the elevator is suitable for being installed in a hoistway with small top space and small pit space.

[0027] The rotating arm 12 is provided with a rotating shaft 121, and the rotating arm 12 is hinged to the hinge seat 32 through the rotating shaft 121. The dial 5 and the rotating shaft 121 are coaxially connected, so that the dial 5 is fixedly arranged on the rotating arm 12 and rotates around the rotating center axis of the rotating arm 12. The dial 5 and the rotating shaft 121 can be welded, and of course, other ways can also be adopted. The outer circumferential surface of the dial 5 is provided with a positioning groove 51, and the positioning groove 51 is used in cooperation with the safety gear limit switch 9. The lower beam 0 is provided with a switch plate 8 for installing the safety gear limit switch 9. The safety gear limit switch 9 is a common structure for controlling the traction machine. Once the rotating arm 12 rotates, the dial 5 on the rotating arm 12 plays a role of amplifying the braking effect. When the dial 5 rotates, the safety gear limit switch 9 is no longer located in the middle of the positioning groove 51, that is, the safety gear limit switch 9 acts, and the traction machine is simultaneously powered off. In the drawing, the safety gear limit switch 9 is arranged below the dial 5 due to the small size, and of course, the safety gear limit switch 9 can also be arranged above the dial 5.

[0028] The pulling rod 11 is sleeved with a reset spring 15 for resetting the pulling rod 11. The pulling rod 11 is provided with a spring seat 16, and the reset spring 15 is arranged between the spring seat 16 and the pulling seat 31. It can be said that the pulling seat 31 not only plays a role of installing the pulling rod 11 but also plays a role of installing the reset spring 15, so that the use of parts related to the reset spring 15 is reduced.

[0029] The pulling rod 11 is provided with a connecting assembly for connecting the pulling steel wire rope. The connecting assembly comprises a connecting plate 41 connected with the pulling rod 11 and a connecting plate 42 connected with the connecting plate 41 and used for fixing the pulling steel wire rope. The connecting plate 42 is provided with a rope hole 42 for binding the pulling steel wire rope.

[0030] The above embodiment only describes the preferred embodiment of the utility model, and does not limit the design concept and scope of the utility model. Various modifications and improvements to the technical solution of the utility model made by those skilled in the art without departing from the design concept of the utility model shall fall within the protection scope of the utility model. The technical content claimed by the utility model has been fully recorded in the claims.

Claims

1. A connection structure of a straight beam and a pulling mechanism, characterized by comprising: a straight beam; a pulling mechanism; a first connecting member; a second connecting member; and a third connecting member. The lifting mechanism is arranged above the bottom of the straight beam and below the top of the straight beam; The lifting mechanism comprises a lifting rod (11), a rotating arm (12), and a first transmission mechanism (13) connecting the lifting rod (11) and the rotating arm (12), wherein the lifting rod (11) is arranged vertically, the straight beam is provided with a plurality of lifting seats (31) through which the lifting rod (11) passes and a hinged seat (32) for mounting the rotating arm (12), the first transmission mechanism (13) is used for converting the lifting movement of the lifting rod (11) into the rotating movement of the rotating arm (12), and the rotating arm (12) is further connected with a pushing arm (14) used for driving the movement of the wedge-shaped block of the safety clamp.

2. The connecting structure of a straight beam and a pulling mechanism according to claim 1, characterized in that, The first transmission mechanism (13) comprises a transmission arm, one end of the transmission arm is hinged to the rotating arm (12), and the other end of the transmission arm is hinged to the lifting rod (11).

3. The connecting structure of a straight beam and a pulling mechanism according to claim 2, characterized in that, The lifting rod (11) comprises a lifting head (111) at the bottom, and the lifting head (111) is hinged to the transmission arm.

4. The connecting structure of a straight beam and a pulling mechanism according to claim 1, wherein The bottom of the straight beam is fixedly provided with a lower beam (0), the lower beam (0) comprises a straight beam connecting portion (01), an upper turning edge portion (02) connected to the upper portion of the straight beam connecting portion (01), and a lower turning edge portion (03) connected to the lower portion of the straight beam connecting portion (01). The hinged seat (32) is connected to the upper turning edge portion (02), the lower turning edge portion (03), and the straight beam connecting portion (01) at the same time.

5. The connecting structure of a straight beam and a pulling mechanism according to claim 1, wherein The rotating arm (12) is fixedly provided with a pushing disc (5) with the center axis of the rotating arm (12) as the center axis, and the outer circumferential surface of the pushing disc (5) is provided with a positioning groove (51) used for cooperating with a safety clamp limit switch (9).

6. The connecting structure of a straight beam and a pulling mechanism according to claim 5, wherein The rotating arm (12) is fixedly provided with a first rotating shaft (121) hinged to the hinged seat (32), and the pushing disc (5) is coaxially connected to the first rotating shaft (121).

7. The connecting structure of a straight beam and a pulling mechanism according to claim 1, wherein The lifting rod (11) is sleeved with a reset spring (15) used for resetting the lifting rod (11).

8. The connecting structure of a straight beam and a pulling mechanism according to claim 7, wherein The lifting rod (11) is provided with a spring seat (16), and the reset spring (15) is arranged between the spring seat (16) and the lifting seat (31).

9. The connecting structure of a straight beam and a pulling mechanism according to claim 1, wherein The lifting rod (11) is provided with a connecting assembly used for connecting a lifting steel wire rope, and the connecting assembly comprises a first connecting plate (41) connected to the lifting rod (11) and a second connecting plate (42) connected to the first connecting plate (41) and used for fixing the lifting steel wire rope.

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