CN212403235U - Compact weight type lifting height limiter - Google Patents
Compact weight type lifting height limiter Download PDFInfo
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- CN212403235U CN212403235U CN202020949255.3U CN202020949255U CN212403235U CN 212403235 U CN212403235 U CN 212403235U CN 202020949255 U CN202020949255 U CN 202020949255U CN 212403235 U CN212403235 U CN 212403235U
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Abstract
A compact weight type lifting height limiter comprises an upper shell and a lower shell, wherein a first groove for mounting a circuit board is formed in the lower shell, a first arc-shaped concave part for clamping a cable sheath is formed in the edge of the lower shell on one side of the first groove, and a cable penetrates through the cable sheath; a hanging hole is formed in the upper end of the shell above the first groove, a microswitch is fixedly connected to the lower portion of the shell, and the microswitch is connected with the circuit board; the lower end of the microswitch is provided with a pull rope assembly which comprises a contact block, a spring assembly section, a steel wire rope and a steel wire rope lantern ring; the compression spring is sleeved on the spring assembly section, one end of the compression spring is abutted against the lower end face of the contact block, and the other end of the compression spring is limited on the inner wall of the bottom end of the T-shaped groove; the bottom end of the T-shaped groove is provided with a first channel for a steel wire rope to pass through; a groove II, a T-shaped groove II, an arc-shaped depressed part II and a channel II are respectively arranged in the upper shell and correspond to the groove I, the T-shaped groove I, the arc-shaped depressed part I and the channel I which are arranged in the lower shell; the limiter has the advantages of simple and compact structure, small size, light weight and reliable performance.
Description
Technical Field
The utility model relates to a compact weight formula hoisting height limiter.
Background
The existing lifting height limiter has the characteristics of large structural size and weight, more parts, relatively complex structure and insufficient reliability, and the cable is often pulled out of the shell.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a compact weight formula plays to rise height limiter, this limiter simple structure is compact, and the little light in weight of size, and the dependable performance.
In order to achieve the purpose, the utility model provides a compact weight-hammer type lifting height limiter, which comprises an upper shell and a lower shell, wherein a first groove for installing a circuit board is arranged in the lower shell, a first arc-shaped concave part for clamping a cable sheath is arranged at the edge of the lower shell at one side of the first groove, a cable is penetrated in the cable sheath, one end of the cable is connected with the circuit board through an onboard connector, and the other end of the cable is connected with a plug; a hanging hole is formed in the upper end of the shell above the first groove, a microswitch is fixedly connected to the lower portion of the shell, and the microswitch is connected with the circuit board through an onboard connector; the lower end of the microswitch is provided with a pull rope assembly, the pull rope assembly is arranged in a T-shaped groove I which is formed in the lower shell and is matched with the pull rope assembly, and the pull rope assembly comprises a top contact block, a spring assembly section connected to the lower end of the contact block, a steel wire rope connected to the lower end of the spring assembly section and a bottom steel wire rope lantern ring;
the compression spring is sleeved on the spring assembly section, one end of the compression spring is abutted against the lower end face of the contact block, and the other end of the compression spring is limited on the inner wall of the bottom end of the T-shaped groove; the bottom end of the T-shaped groove is provided with a first channel for a steel wire rope to pass through;
a groove II, a T-shaped groove II, an arc-shaped recess II and a channel II are respectively arranged in the upper shell and correspond to the groove I, the T-shaped groove I, the arc-shaped recess I and the channel I which are arranged in the lower shell;
the upper shell and the lower shell are connected through bolts, wherein a cavity between the first groove and the second groove forms a circuit board mounting space; a cavity between the first T-shaped groove and the second T-shaped groove forms a mounting space of the pull rope assembly; a cavity between the first arc-shaped sunken part and the second arc-shaped sunken part forms a cable sheath limiting space; and a cavity between the first channel and the second channel forms a steel wire rope channel.
Furthermore, the micro switch is positioned in the lower shell through the positioning hole and is installed and fixed through the screw, the protection grade is IP67, and the fatigue life is more than 100 ten thousand times.
Furthermore, a wear-resistant steel ring is arranged in the hanging hole.
The utility model discloses a lifting height limiter is through connecting micro-gap switch and circuit board, set up the stay cord assembly at micro-gap switch's lower extreme simultaneously, connect through wire rope between the first half and the lower half of stay cord assembly, the first half is arranged in T shape recess, and the cover is equipped with compression spring on the spring assembly section, compression spring's upper end supports terminal surface under the contact block, the other end is spacing on the bottom inner wall of T shape recess, under the condition that the lower half wire rope lantern ring is not born a burden, under compression spring's resilience effect, the top contact block of stay cord assembly contacts with micro-gap switch, in order to overcome compression spring's elasticity, through hanging a heavy object on the wire rope lantern ring, make contact block and micro-gap switch contactless, when the hoist lifting hook rises upwards and holds up the heavy object that hangs on the wire rope lantern ring, the stay cord assembly bounces under spring force effect, contact block touch switch, after the switching signal is processed, the crane hook stops rising continuously, and the safety protection effect is achieved; the cable sheath limiting space is arranged at the edge of the shell, so that the situation that the cable is pulled out is effectively prevented, and the cable is positioned; the lifting height limiter has the advantages of simple and compact structure, small size, light weight and reliable performance.
Drawings
Fig. 1 is a schematic structural view of a lower housing of the present invention;
FIG. 2 is a schematic view of the upper housing construction;
fig. 3 is a side view of the upper and lower housings.
In the figure: 1. the cable protection device comprises an upper shell, 2, a lower shell, 3, a circuit board, 4, a first groove, 5, a cable sheath, 6, a first arc-shaped concave part, 7, a cable, 8, a plug, 9, a hanging hole, 10, a micro switch, 11, a pull rope assembly, 12, a first T-shaped groove, 13, a contact block, 14, a spring assembly section, 15, a steel wire rope, 16, a steel wire rope lantern ring, 17, a compression spring, 18, a first channel, 19, a second groove, 20, a second T-shaped groove, 21, a second arc-shaped concave part, 22 and a second channel.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 3, a compact weight hammer type lifting height limiter comprises an upper shell 1 and a lower shell 2, wherein a first groove 4 for installing a circuit board 3 is formed in the lower shell 2, an arc-shaped concave part 6 for clamping a cable sheath 5 is arranged at the edge of the lower shell at one side of the first groove 4, a cable 7 penetrates through the cable sheath 5, one end of the cable is connected with the circuit board 3 through an on-board connector, and the other end of the cable is connected with a plug 8; a hanging hole 9 is formed in the upper end of the shell above the first groove 4, a microswitch 10 is fixedly connected to the lower portion of the shell, and the microswitch 10 is connected with the circuit board 3 through an onboard connector; the lower end of the microswitch 10 is provided with a pull rope assembly 11, the pull rope assembly 11 is arranged in a T-shaped groove I12 which is arranged in the lower shell and is matched with the pull rope assembly 11, and the pull rope assembly 11 comprises a top contact block 13, a spring assembly section 14 connected to the lower end of the contact block, a steel wire rope 15 connected to the lower end of the spring assembly section and a bottom steel wire rope lantern ring 16;
the compression spring 17 is sleeved on the spring assembling section 14, one end of the compression spring is abutted against the lower end face of the contact block 13, and the other end of the compression spring is limited on the inner wall of the bottom end of the T-shaped groove I12; the bottom end of the T-shaped groove I14 is provided with a channel I18 for a steel wire rope to pass through;
a groove II 19, a T-shaped groove II 20, an arc-shaped recess II 21 and a channel II 22 are respectively formed in the upper shell 1 and correspond to the groove I4, the arc-shaped recess I6, the T-shaped groove I12 and the channel I18 which are formed in the lower shell;
the upper shell 1 and the lower shell 2 are connected through bolts, wherein a cavity between the first groove 4 and the second groove 19 forms a circuit board mounting space; a cavity between the first T-shaped groove 12 and the second T-shaped groove 20 forms a mounting space of the pull rope assembly; a cavity between the first arc-shaped concave part 6 and the second arc-shaped concave part 21 forms a cable sheath limiting space; the cavity between the first channel 18 and the second channel 22 forms a cable channel.
In order to ensure the working reliability of the microswitch 10, the microswitch 10 is positioned in the lower shell 2 through a positioning hole and is installed and fixed through a screw, the protection grade is IP67, and the fatigue life is more than 100 ten thousand times.
In order to increase the wear resistance of the hanging hole 9 and prolong the service life of the limiter, a wear-resistant steel ring is arranged in the hanging hole 9.
And (4) pouring sealant after wiring of the circuit board in the groove is finished, and fastening the upper shell and the lower shell through bolts. When in use, the lifting height limiter of the utility model is hung on the crane arm head, and a heavy object which can overcome the resilience force of the compression spring is hung on the hanging hole at the bottom end of the limiter, so that the micro switch does not act; when the crane hook rises upwards and supports a heavy object hung on the hanging hole, the pull rope assembly bounces under the action of the compression spring, the contact block at the top of the pull rope assembly triggers the micro switch, a signal of the micro switch is transmitted to the relevant processor through the circuit board, and the processed signal is transmitted to the crane execution structure, so that the hook stops continuously rising, and the height limiting protection effect is achieved.
Claims (3)
1. A compact weight type lifting height limiter comprises an upper shell (1) and a lower shell (2), and is characterized in that a first groove (4) for installing a circuit board (3) is formed in the lower shell (2), an arc-shaped concave part (6) for clamping a cable sheath (5) is arranged at the edge of the lower shell (2) on one side of the first groove (4), a cable (7) penetrates through the cable sheath (5), one end of the cable is connected with the circuit board (3) through an onboard connector, and the other end of the cable is connected with a plug (8); a hanging hole (9) is formed in the upper end of the shell above the first groove (4), a microswitch (10) is fixedly connected to the lower portion of the shell, and the microswitch (10) is connected with the circuit board (3) through an onboard connector; the lower end of the microswitch (10) is provided with a pull rope assembly (11), the pull rope assembly (11) is arranged in a T-shaped groove I (12) which is formed in the lower shell (2) and matched with the pull rope assembly, and the pull rope assembly (11) comprises a top contact block (13), a spring assembly section (14) connected to the lower end of the contact block (13), a steel wire rope (15) connected to the lower end of the spring assembly section (14) and a bottom steel wire rope lantern ring (16);
the compression spring (17) is sleeved on the spring assembly section (14), one end of the compression spring is abutted against the lower end face of the contact block (13), and the other end of the compression spring is limited on the inner wall of the bottom end of the T-shaped groove; a first channel (18) for a steel wire rope (15) to pass through is formed at the bottom end of the T-shaped groove;
a groove II (19), a T-shaped groove II (20), an arc-shaped recess II (21) and a channel II (22) are respectively arranged in the upper shell (1) and correspond to the groove I (4), the T-shaped groove I (12), the arc-shaped recess I (6) and the channel I (18) which are arranged in the lower shell (2);
the upper shell (1) and the lower shell (2) are connected through bolts, wherein a cavity between the first groove (4) and the second groove (19) forms a mounting space of the circuit board (3); a cavity between the first T-shaped groove (12) and the second T-shaped groove (20) forms a mounting space of the pull rope assembly (11); a cavity between the first arc-shaped sunken part (6) and the second arc-shaped sunken part (21) forms a cable sheath (5) limiting space; the cavity between the first (18) and second (22) channels forms a cable channel.
2. A compact weighted lifting height limiter according to claim 1 wherein the microswitch (10) is positioned in the lower housing (2) through a positioning hole and is fixed by screw mounting, and the protection level is IP67, and the fatigue life is more than 100 ten thousand times.
3. A compact weighted lifting height limiter according to claim 1 or 2 wherein the hanging hole (9) is provided with a wear resistant steel ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020949255.3U CN212403235U (en) | 2020-05-29 | 2020-05-29 | Compact weight type lifting height limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020949255.3U CN212403235U (en) | 2020-05-29 | 2020-05-29 | Compact weight type lifting height limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212403235U true CN212403235U (en) | 2021-01-26 |
Family
ID=74409037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020949255.3U Active CN212403235U (en) | 2020-05-29 | 2020-05-29 | Compact weight type lifting height limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212403235U (en) |
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2020
- 2020-05-29 CN CN202020949255.3U patent/CN212403235U/en active Active
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