Safety tongs mounting structure applied to super-large-load cargo elevator

Abstract

A safety tongs installation structure applied to an ultra-large load cargo elevator comprises a plurality of car frames, each car frame comprises two stand columns and a lower beam, and the two ends of each lower beam are connected with the lower ends of the two stand columns respectively. Each car frame is provided with a long lifting shaft and a short lifting shaft which are rotatably arranged. The front ends and the rear ends of the long lifting shaft and the short lifting shaft are respectively sleeved with a front shaft seat and a rear shaft seat which are arranged on the lower beam; a lifting pull arm is arranged at the rear end of the lifting pull shaft; the front shaft seat used for installing the long lifting shaft or / and the front shaft seat of the short lifting shaft is / are in matched contact with a lifting limiting plate used for limiting the position of the front shaft seat, and the lifting limiting plate is installed on the lower beam. According to the safety gear linkage mechanism, the front shaft seat can be prevented from shifting in the working process, it is guaranteed that the long lifting shaft and the short lifting shaft can be accurately and synchronously linked, and therefore the elevator safety gear is driven to act completely, the stability of the safety gear linkage mechanism in the working process is remarkably improved, and the braking effect and safety of an elevator are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a safety clamp installation structure applied to an extra-large load freight elevator. Background Art

[0002] At present, the elevator cars of super-large load-bearing freight elevators on the market are often equipped with multiple sets of safety clamps. These multiple sets of safety clamps are synchronously controlled by the same safety clamp linkage system to achieve synchronous action of all safety clamps.

[0003] For example, the multi-linkage safety clamp lifting mechanism and safety clamp system disclosed in the technical solution of CN202020272290.6 realize the synchronous braking of multiple safety clamps through the mutual cooperation of the longitudinal linkage shaft and the transverse linkage shaft, which significantly improves the safety performance of the elevator. However, this technical solution has a significant problem in actual application: the fixing plate of the mounting seat close to the transverse linkage shaft is fixed only by bolts and lacks additional supporting structure. During the operation of the mechanism, especially when one longitudinal linkage shaft is linked to another longitudinal linkage shaft through the transverse linkage shaft, the fixing plate of the mounting seat close to the transverse linkage shaft will be subjected to a large force, which is prone to pulling and displacement, thereby affecting the linkage effect of the other longitudinal linkage shaft, and even causing the safety clamp to fail to fully operate, reducing the braking effect and safety. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a safety clamp installation structure for use on an ultra-large load freight elevator.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A safety clamp installation structure for an ultra-large freight elevator comprises a plurality of car frames arranged from front to back, each car frame comprising two upright posts and a lower beam connected to the lower ends of the two upright posts at both ends; each car frame is provided with two elevator safety clamps respectively arranged on the two upright posts, and a rotatably arranged lifting long shaft and lifting short shaft; the front and rear ends of the lifting long shaft and lifting short shaft are respectively fitted with a front axle seat and a rear axle seat mounted on the lower beam; the front end of the lifting long shaft is connected to the front end of the lifting short shaft via a lifting linkage rod, and the two adjacent lifting long shafts are connected via a braking synchronization rod.

[0007] The lifting long shaft and the lifting short shaft are both provided with a safety gear linkage arm for connecting and controlling the action of an elevator safety gear when the lifting long shaft rotates; a lifting arm is provided on the rear end of the lifting long shaft; the characteristics are:

[0008] The front axle seat for installing the lifting long axle and / or the front axle seat for lifting the short axle cooperates with a lifting limit plate for limiting the position of the front axle seat, and the lifting limit plate is installed on the lower beam.

[0009] In the utility model, a lifting control space is provided in the lower beam, and a first lifting opening connected to the lifting control space is provided at both left and right ends of the lower beam, and the middle parts of the lifting long axis and the lifting short axis are both located in the lifting control space; one end of the two safety clamp linkage arms respectively cooperates with the middle parts of the lifting long axis and the lifting short axis, and the other end passes through the first lifting opening and cooperates with the elevator safety clamp.

[0010] In the present invention, the lower beam includes a front lower beam body, a rear lower beam body and two column bases that are relatively arranged front and rear. The front and rear ends of the column bases are respectively connected to the front lower beam body and the rear lower beam body and together enclose the lifting control space. The front axle seat is installed on the front lower beam body, and the rear axle seat is installed on the rear lower beam body; the first lifting opening is provided on the column base.

[0011] In the present invention, the lower beam is provided with two axle hole mounting structures distributed on the left and right, and each axle hole mounting structure includes a front pulling through hole provided on the front lower beam body and a rear pulling through hole provided on the rear lower beam body. The front end of the lifting long axis and the front end of the lifting short axis respectively pass through the front pulling through holes of the two axle hole mounting structures and then cooperate with the front axle seat, and the rear end of the lifting long axis and the rear end of the lifting short axis respectively pass through the rear pulling through holes of the two axle hole mounting structures and then cooperate with the rear axle seat.

[0012] In the present invention, a front seat positioning convex ring is coaxially provided on the rear side of the front axle seat and is positioned in the front pulling through hole, and a rear seat positioning convex ring is coaxially provided on the front side of the rear axle seat and is positioned in the rear pulling through hole.

[0013] In the present invention, the elevator safety clamp is installed in a column groove on a column facing away from the chassis, and a second lifting opening corresponding to the first lifting opening is provided on the column.

[0014] In the present invention, the lifting limit plate is provided with a lifting limit groove for the front axle seat to be inserted and positioned.

[0015] In the present invention, the lifting limit groove is U-shaped, the outer contour of the front axle seat is circular, and the lifting limit groove includes a rectangular groove and a semicircular groove. One end of the rectangular groove passes through the lifting limit plate, and the other end is connected to the semicircular groove. The arc surface of the semicircular groove is adapted to at least part of the outer circumferential surface of the front axle seat.

[0016] In the utility model, at least two lifting-limiting oblong holes are provided on the lifting-limiting plate, and the length direction of the lifting-limiting oblong holes extends longitudinally. The lower beam is provided with lifting-limiting screw holes with the same number as the lifting-limiting oblong holes, and the lifting-limiting oblong holes are threadedly inserted into the lifting-limiting bolts in the lifting-limiting screw holes.

[0017] The beneficial effects of the present invention are as follows: the present invention adds a lifting limit plate to the front axle seat for installing the lifting long shaft or / and the front axle seat for installing the lifting short shaft. The lifting limit plate cooperates with the front axle seat to limit the position of the front axle seat and prevent the front axle seat from shifting during operation. Therefore, the front axle seat can maintain a stable position even when subjected to a larger force during operation, ensuring that the lifting long shaft and the lifting short shaft can be linked accurately and synchronously, thereby driving the elevator safety clamp to fully operate, significantly improving the stability of the safety clamp linkage mechanism during operation, and ensuring the braking effect and safety of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a perspective view of the safety gear installation structure;

[0020] Figure 2 It is a schematic diagram of a combination of multiple lifting long axes and multiple lifting short axes;

[0021] Figure 3 Schematic diagram of the connection between the lifting long axis and the lifting short axis;

[0022] Figure 4 Schematic diagram of arrangement of multiple lower beams;

[0023] Figure 5 Schematic diagram of the installation of the lifting long shaft and the lifting short shaft on the lower beam;

[0024] Figure 6 It is a schematic diagram of the combination of the front axle seat and the lifting limit plate;

[0025] Figure 7 Schematic diagram of the combination of the lifting long axis and the two lower beams;

[0026] Figure 8 This is a schematic diagram of the installation of the front axle seat and the rear axle seat;

[0027] Figure 9 This is a schematic diagram of the installation of elevator safety clamps. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] Reference Figure 1-9, a safety clamp installation structure for use on an ultra-large load freight elevator, the freight elevator frame includes a plurality of car frames 20 arranged from front to back, each car frame 20 includes two columns 201 distributed on the left and right, a lower beam 202 connected to the lower ends of the two columns 201 at both ends, and an upper beam 203 connected to the tops of the two columns 201 at both ends; the bottom of the chassis is connected to the tops of all the lower beams 202; the upper reinforcement frame 2 is connected to all the columns 201 at the same time and is located between the upper beam 203 and the chassis; each car frame 20 is provided with two elevator safety clamps 1 respectively arranged on the two columns 201 and a rotatable lifting long shaft 2 and lifting short shaft 3; the lifting long shaft 2 and lifting short shaft 3 are The front and rear ends of the short shaft 3 are respectively provided with a front axle seat 4 and a rear axle seat 5 installed on the lower beam 202, and the front axle seat 4 and the rear axle seat 5 are respectively fixedly mounted on the front and rear ends of the lower beam 202; the front end of the lifting long shaft 2 is connected to the front end of the lifting short shaft 3 through a lifting linkage rod 10, so that the lifting long shaft 2 and the lifting short shaft 3 rotate at the same time, and the two adjacent lifting long shafts 2 are connected by a brake synchronization rod 6; the lifting long shaft 2 and the lifting short shaft 3 are both provided with a safety clamp linkage arm 7 for connecting to control the action of an elevator safety clamp 1 when they rotate; a lifting arm 8 is provided on the rear end of the lifting long shaft 2, and the lifting arm 8 is used to connect to the speed limiter rope of the speed limiter. The front axle seat 4 for installing the lifting long shaft 2 or / and the front axle seat 4 for lifting the short shaft 3 is in contact with a lifting limit plate 9 for limiting the position of the front axle seat 4, and the lifting limit plate 9 is installed on the lower beam 202 with a lifting limit fixing bolt; the lifting limit plate 9 prevents the front axle seat 4 from shifting during operation, so that it can be subjected to a larger force during operation, and the front axle seat 4 can also maintain a stable position, ensuring that the lifting long shaft 2 and the lifting short shaft 3 can be accurately and synchronously linked, thereby driving the elevator safety clamp 1 to fully operate, significantly improving the stability of the safety clamp linkage mechanism during operation, and ensuring the braking effect and safety of the elevator.

[0032] Furthermore, a lifting control space is defined within the lower beam 202. First lifting openings 2020 communicating with the lifting control space are provided at both the left and right ends of the lower beam 202. The middle portions of the lifting major axis 2 and the lifting minor axis 3 are located within the lifting control space. One end of each of the two safety gear linkage arms 7 engages with the middle portions of the lifting major axis 2 and the lifting minor axis 3, respectively, while the other end passes through the first lifting openings 2020 and engages with the elevator safety gear 1. This structure reduces the exposure of the lifting major axis 2 and the lifting minor axis 3, thereby conserving space at the bottom of the freight elevator frame.

[0033] In this embodiment, the lower beam 202 includes a front lower beam body 2021, a rear lower beam body 2022 and two column foots 2023 distributed on the left and right sides, and the front and rear ends of the column foot 2023 are respectively connected to the front lower beam body 2021 and the rear lower beam body 2022 and together enclose the lifting control space, the front axle seat 4 is installed on the front lower beam body 2021, and the rear axle seat 5 is installed on the rear lower beam body 2022; the first lifting opening 2020 is provided on the column foot 2023.

[0034] In this embodiment, the lower beam 202 is provided with two axle hole mounting structures distributed on the left and right, and each axle hole mounting structure includes a front pulling through hole provided on the front lower beam body 2021 and a rear pulling through hole provided on the rear lower beam body 2022. The front end of the lifting long axis 2 and the front end of the lifting short axis 3 respectively pass through the front pulling through holes of the two axle hole mounting structures and then cooperate with the front axle seat 4, and the rear end of the lifting long axis 2 and the rear end of the lifting short axis 3 respectively pass through the rear pulling through holes of the two axle hole mounting structures and then cooperate with the rear axle seat 5.

[0035] In this embodiment, a front seat positioning convex ring 41 is coaxially provided on the rear side of the front axle seat 4 and is positioned in cooperation with the front pulling through hole, and a rear seat positioning convex ring 51 is coaxially provided on the front side of the rear axle seat 5 and is positioned in cooperation with the rear pulling through hole. The front seat positioning convex ring 41 and the rear seat positioning convex ring 51 can play a certain positioning role, further reducing the probability of displacement of the front axle seat 4 and the rear axle seat 5.

[0036] In this embodiment, a column mounting groove is enclosed between the left end of the front lower beam 2021, the left end of the rear lower beam 2022, and the column foot 2023 at the left end, and between the right end of the front lower beam 2021, the right end of the rear lower beam 2022, and the column foot 2023 at the right end. The lower portion of the column 201 is at least partially embedded in the column mounting groove. Furthermore, the elevator safety gear 1 is installed in the column groove of the column 201 facing away from the chassis. The column 201 is provided with a second lifting opening corresponding to the first lifting opening 2020, so that the other end of the safety gear linkage arm 7 can pass through the second lifting opening to engage with the elevator safety gear 1.

[0037] Furthermore, the front lower beam 2021 and the rear lower beam 2022 are both made of channel steel, the front axle seat 4 is installed in the lower groove of the car frame of the front lower beam 2021, and the rear axle seat 5 is installed in the lower groove of the car frame of the rear lower beam 2022.

[0038] In this embodiment, the lifting limit plate 9 is provided with a lifting limit groove 91 for the front axle seat 4 to be inserted and positioned. The lifting limit groove 91 is U-shaped, and the outer contour of the front axle seat 4 is circular. The lifting limit groove 91 includes a rectangular groove and a semicircular groove. One end of the rectangular groove passes through the lifting limit plate 9, and the other end is connected to the semicircular groove. The arc surface of the semicircular groove is adapted to at least part of the outer circumferential surface of the front axle seat 4, thereby playing a positioning role.

[0039] In this embodiment, the lifting limit plate 9 is provided with at least two lifting limit oblong holes 92, and the length direction of the lifting limit oblong holes 92 extends longitudinally. The lower beam 202 is provided with lifting limit screw holes with the same number as the lifting limit oblong holes 92, and the lifting limit bolts with threads inserted through the lifting limit oblong holes 92 are matched with the lifting limit screw holes.

[0040] As a preferred embodiment, the lifting linkage rod 10 includes a left strut 101, a right strut 102 and a strut long nut 103, the left strut 101 includes a left hinge seat at one end thereof and a left screw segment at the other end thereof, and the left hinge seat is transmission-connected to the lifting long shaft 2; the right strut 102 includes a right hinge seat at one end thereof and a right screw segment at the other end thereof, and the right hinge seat is transmission-connected to the lifting short shaft 3; the two ends of the strut long nut 103 are respectively provided with a first screw hole and a second screw hole extending along the axial direction, the screw thread rotation direction of the first screw hole is opposite to the screw thread rotation direction of the second screw hole, at least part of the thread of the left screw segment is adapted to the first screw hole, and at least part of the thread of the right screw segment is adapted to the second screw hole. The length of the lifting linkage rod 10 can be quickly adjusted by rotating the support rod long nut 103 without disconnecting the connection with other components, which simplifies the operation steps, reduces the difficulty of adjustment, improves the adjustment efficiency, and reduces the time cost; and there is no need to change the connection method between the lifting linkage rod 10 and other components during the adjustment process, ensuring the overall stability and reliability of the equipment.

[0041] As a preferred embodiment, a left rocker arm 21 that rotates synchronously with the lifting long shaft 2 is fixedly installed on the front end thereof, and the end of the left rocker arm 21 away from the lifting long shaft 2 is hinged to the left hinge seat; a right rocker arm 31 that rotates synchronously with the lifting short shaft 3 is fixedly installed on the front end thereof, and the end of the right rocker arm 31 away from the lifting short shaft 3 is hinged to the right hinge seat, so that when the lifting long shaft 2 rotates, the lifting short shaft 3 can be driven to rotate synchronously under the action of the left rocker arm 21, the lifting linkage rod 10 and the right rocker arm 31.

[0042] As a preferred embodiment, the safety clamp linkage arm 7 is provided with two clamp block connecting parts 71 symmetrically arranged front and back, and the two clamp block connecting parts 71 are respectively connected and cooperated with the two clamp blocks of the elevator safety clamp 1, so that when the safety clamp linkage arm 7 is actuated, the two clamp blocks of the elevator safety clamp 1 can be linked to act, thereby realizing emergency braking.

[0043] In this embodiment, a safety clamp linkage oblong hole is provided on the clamp block connecting portion 71, and a clamp block of the elevator safety clamp 1 is provided with a clamp block linkage member for inserting into the safety clamp linkage oblong hole. When the clamp block connecting portion 71 moves, the clamp block linkage member can be linked to drive the clamp block of the elevator safety clamp 1 to move.

[0044] In this embodiment, a support rod reset seat 11 is mounted on the lower beam 202. The support rod reset seat 11 is provided with a support rod reset through hole for the left support rod 101 to pass through. A support rod reset spring 12 is mounted on the left support rod 101. A support rod reset nut 13 is threadedly engaged with the left screw segment. The two ends of the support rod reset spring 12 are respectively restrained by the support rod reset seat 11 and the support rod reset nut 13. After the lifting linkage rod 10 is actuated, the support rod reset spring 12 drives the lifting linkage rod 10 to reset.

[0045] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the scope of protection of the present invention.

Claims

1. A safety clamp installation structure for an extra-large load freight elevator, comprising a plurality of car frames (20) arranged from front to back, each car frame (20) comprising two upright posts (201) and a lower beam (202) connected to the lower ends of the two upright posts (201) at both ends; each car frame (20) is provided with two elevator safety clamps (1) respectively arranged on the two upright posts (201) and a rotatably arranged lifting long shaft (2) and a lifting short shaft (3); the front and rear ends of the lifting long shaft (2) and the lifting short shaft (3) are respectively provided with a front axle seat (4) and a rear axle seat (5) mounted on the lower beam (202); the front end of the lifting long shaft (2) is connected to the front end of the lifting short shaft (3) through a lifting linkage rod (10), and the two adjacent lifting long shafts (2) are connected through a braking synchronization rod (6); The lifting long shaft (2) and the lifting short shaft (3) are both provided with a safety clamp linkage arm (7) for connecting and controlling the action of an elevator safety clamp (1) when the lifting long shaft (2) and the lifting short shaft (3) are rotated; a lifting arm (8) is provided on the rear end of the lifting long shaft (2); the characteristics are: A front axle seat (4) for installing a lifting long axle (2) or / and a front axle seat (4) for lifting a short axle (3) is in contact with a lifting limit plate (9) for limiting the position of the front axle seat (4), and the lifting limit plate (9) is installed on the lower beam (202).

2. The safety gear installation structure for an ultra-large freight elevator according to claim 1 is characterized in that: A lifting control space is provided in the lower beam (202), and first lifting openings (2020) connected to the lifting control space are provided at both left and right ends of the lower beam (202), and the middle parts of the lifting long axis (2) and the lifting short axis (3) are both located in the lifting control space; one end of the two safety clamp linkage arms (7) respectively cooperates with the middle parts of the lifting long axis (2) and the lifting short axis (3), and the other end passes through the first lifting opening (2020) and cooperates with the elevator safety clamp (1).

3. The safety gear installation structure for an ultra-large freight elevator according to claim 2 is characterized in that: The lower beam (202) comprises a front lower beam body (2021), a rear lower beam body (2022) and two column bases (2023) arranged relatively front and rear, the front and rear ends of the column bases (2023) being respectively connected to the front lower beam body (2021) and the rear lower beam body (2022) and jointly enclosing the lifting control space, the front axle seat (4) being mounted on the front lower beam body (2021), and the rear axle seat (5) being mounted on the rear lower beam body (2022); the first lifting opening (2020) being provided on the column bases (2023).

4. The safety gear installation structure for an ultra-large freight elevator according to claim 3 is characterized in that: The lower beam (202) is provided with two shaft hole mounting structures distributed in the left and right directions, and each shaft hole mounting structure includes a front pulling through hole provided on the front lower beam body (2021) and a rear pulling through hole provided on the rear lower beam body (2022). The front end of the pulling long axis (2) and the front end of the pulling short axis (3) respectively pass through the front pulling through holes of the two shaft hole mounting structures and then fit into the front axle seat (4). The rear end of the pulling long axis (2) and the rear end of the pulling short axis (3) respectively pass through the rear pulling through holes of the two shaft hole mounting structures and then fit into the rear axle seat (5).

5. The safety gear installation structure for an ultra-large load freight elevator according to claim 4 is characterized in that: The front axle seat (4) is coaxially provided with a front seat positioning convex ring (41) that fits in the front pulling hole for positioning, and the rear axle seat (5) is coaxially provided with a rear seat positioning convex ring (51) that fits in the rear pulling hole for positioning.

6. The safety gear installation structure for an ultra-large freight elevator according to claim 2, characterized in that: The elevator safety clamp (1) is installed in a column groove of a column (201) facing away from the chassis, and a second lifting opening corresponding to the first lifting opening (2020) is provided on the column (201).

7. The safety gear installation structure for an extra-large freight elevator according to claim 1 is characterized in that: The lifting limit plate (9) is provided with a lifting limit groove (91) for the front axle seat (4) to be inserted and positioned.

8. The safety gear installation structure for an ultra-large load freight elevator according to claim 7, characterized in that: The lifting limit groove (91) is U-shaped, and the outer contour of the front axle seat (4) is circular. The lifting limit groove (91) includes a rectangular groove and a semicircular groove. One end of the rectangular groove passes through the lifting limit plate (9), and the other end is connected to the semicircular groove. The arc surface of the semicircular groove is adapted to at least a portion of the outer circumferential surface of the front axle seat (4).

9. The safety gear installation structure for an extra-large freight elevator according to claim 8, characterized in that: The lifting limit plate (9) is provided with at least two lifting limit oblong holes (92), the length direction of the lifting limit oblong holes (92) extending longitudinally, the lower beam (202) is provided with lifting limit screw holes of the same number as the lifting limit oblong holes (92), and the lifting limit bolts threadedly inserted into the lifting limit screw holes are engaged with the lifting limit screw holes.

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