CN214141376U

CN214141376U - High safety hydraulic jack

Info

Publication number: CN214141376U
Application number: CN202022896138.8U
Authority: CN
Inventors: 林华
Original assignee: Anhui Disen Hardware Tool Co ltd
Current assignee: Anhui Disen Hardware Tool Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-09-07
Anticipated expiration: 2030-12-02

Abstract

The utility model provides a high safe type hydraulic pressure ground jack belongs to ground jack technical field. The anti-falling lifting device comprises a base, wherein two anti-falling lifting devices are arranged on the base, each anti-falling lifting device comprises a lifting block driven by a screw rod, the cross section of each lifting block is semicircular, the two lifting blocks in the two anti-falling lifting devices are arranged side by side and spliced into a circle, and a lifting block limiting structure is further arranged on the base. The hydraulic driving mechanism can drive the screw rod to rotate through the transmission assembly, the screw rod can drive the lifting block to lift and lift a heavy object, the screw rod and the lifting block are in self-locking connection through threads, sudden drop can not occur even when the hydraulic driving mechanism stops working, and the hydraulic driving mechanism has high safety.

Description

High safety hydraulic jack

Technical Field

The utility model belongs to the technical field of the ground jack, a high safe type hydraulic pressure ground jack is related to.

Background

The hoisting machinery refers to electromechanical equipment for vertically lifting or vertically lifting and horizontally moving heavy objects, and comprises a bridge crane, a portal crane, a mast crane, mechanical parking equipment, a hydraulic jack, a forklift and the like; however, when the small crane in the prior art is used, if the oil pump or the hydraulic equipment stops working, the situation that the hydraulic pressure cannot bear heavy objects and suddenly drops occurs, and potential safety hazards exist.

In order to overcome the defects of the prior art, people continuously explore and propose various solutions, for example, a chinese patent discloses a hydraulic permanent magnetic disc jack [ application number: 201010551723.2], a control switch is connected and installed on the shell, the shell is connected and installed in the shell ladder frame, the inside of the shell is sequentially connected and installed with a proximity limit, a sliding bearing and a connecting rod pushing plate through a connecting stud, and the shaft head end of the sliding bearing is connected with a hydraulic oil cylinder. The connecting rod pushing plate is connected with a connecting rod arm, and the connecting rod arm is connected with the permanent magnet jack and assembled into a whole. Reasonable in design, preparation is simple, convenient to use moreover, and factor of safety is big, has alleviateed artifical intensity of labour greatly, has improved production efficiency, but also has above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a high safe type hydraulic jack.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a high safe type hydraulic jack, includes the base, the base on be equipped with two elevating gear that prevent falling, the elevating gear that prevents falling include through screw rod driven elevator, the cross-section semicircular in shape of elevator, and two elevator that prevent in the elevating gear that falls set up side by side and splice into circularly, the base on still be equipped with elevator limit structure, the base on still be equipped with hydraulic drive mechanism, hydraulic drive mechanism pass through drive assembly and screw rod and link to each other.

In the high-safety hydraulic jack, the lifting block is internally provided with a threaded hole matched with the thread on the screw rod, and the screw rod is inserted into the threaded hole and is in threaded fit connection with the threaded hole.

In the high-safety hydraulic jack, the base is further provided with an inwards-recessed annular groove, the screw rod is welded with a bearing plate with an annular section, and the bearing plate is inserted into the annular groove and is in running fit connection with the annular groove.

In foretell high safe type hydraulic jack, the base on still be equipped with the ring channel No. two that set up with the ring channel is concentric, No. two ring channels be located the ring channel upside No. two, the embedded annular apron that is equipped with of ring channel No. two, the annular apron down the terminal surface support with the bearing plate up end and lean on, the annular apron fix on the base through a plurality of bolts that set up along circumference.

In the high-safety hydraulic jack, the lifting block limiting structure comprises two limiting rods which are fixed on the annular cover plate and are vertically arranged, the two limiting rods are symmetrically arranged along the central line of the annular cover plate, and the limiting rods are inserted into the lifting block and are in sliding connection with the lifting block.

In the high-safety hydraulic jack, the cross section of the limiting rod is circular, a limiting rod groove matched with the limiting rod is formed in the lifting block, two limiting sliding grooves symmetrically formed along the central line of the limiting rod groove are further formed in two sides of the limiting rod groove, and the limiting blocks inserted into the limiting sliding grooves are arranged on two sides of the limiting rod.

In the above-mentioned high-safety hydraulic jack, the hydraulic drive mechanism includes a hydraulic motor, the hydraulic motor has a rotatable output shaft, and the output shaft of the hydraulic motor is drivingly connected to the screw rod through a transmission assembly.

In foretell high safe type hydraulic jack, transmission assembly including setting up the transmission chamber in the base, hydraulic motor's output shaft inserts to the transmission intracavity and has linked firmly a helical gear along vertical direction, the transmission intracavity still be equipped with No. two helical gears of a helical gear meshing, screw rod bottom insert to the transmission intracavity and have linked firmly No. three helical gears along vertical direction, the transmission intracavity still be equipped with No. four helical gears of No. three helical gear meshing, No. two helical gears and No. four helical gears connect through the pivot.

In the high-safety hydraulic jack, two rotating shaft supporting rods are further arranged in the transmission cavity and are rotatably connected with the rotating shaft.

In the high-safety hydraulic jack, the top of the lifting block is provided with a rubber cushion layer.

Compared with the prior art, the utility model has the advantages of:

1. the hydraulic driving mechanism can drive the screw rod to rotate through the transmission assembly, the screw rod can drive the lifting block to lift and lift a heavy object, the screw rod and the lifting block are in self-locking connection through threads, sudden drop can not occur even when the hydraulic driving mechanism stops working, and the hydraulic driving mechanism has high safety.

2. Thereby the elevator can go up and down along vertical direction when the elevator limit structure can carry on spacingly to the elevator and make the screw rod rotate, sets up two anti-falling elevating gear on the base and can improve the whole weight that the elevator promoted, and the hydraulic drive mechanism in two anti-falling elevating gear can independently drive the elevator lift jack-up heavy object.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a plan view of the present invention.

Detailed Description

As shown in fig. 1 and 2, the high-safety hydraulic jack comprises a base 1, wherein two anti-falling lifting devices 2 are arranged on the base 1, each anti-falling lifting device 2 comprises a lifting block 4 driven by a screw rod 3, the cross section of each lifting block 4 is semicircular, the two lifting blocks 4 in the two anti-falling lifting devices 2 are arranged side by side and spliced into a circle, a lifting block limiting structure 5 is further arranged on the base 1, a hydraulic driving mechanism 6 is further arranged on the base 1, and the hydraulic driving mechanism 6 is connected with the screw rods 3 through a transmission assembly 7.

In this embodiment, hydraulic drive mechanism 6 can pass through transmission assembly 7 drive screw rod 3 and rotate, thereby screw rod 3 rotates and can drive elevator 4 and go up and down to lift the heavy object, and the screw rod has the auto-lock nature through threaded connection with the elevator, even can not appear suddenly dropping when hydraulic drive mechanism stop work, has high security.

Thereby the elevator can go up and down along vertical direction when the elevator limit structure 5 can carry on spacingly to the elevator and make the screw rod rotate, sets up two elevating gear 2 that prevent falling on the base and can improve the whole weight that the elevator promoted, and the hydraulic drive mechanism 6 in two elevating gear 2 that prevent falling can independently drive the elevator lift jack-up heavy object.

Specifically, as shown in fig. 1, a threaded hole 8 adapted to the thread of the screw rod 3 is formed in the lifting block 4, and the screw rod 3 is inserted into the threaded hole 8 and is in threaded fit connection with the threaded hole 8. When the screw rod rotates, the screw rod and the thread in the threaded hole can be improved to drive the lifting block to lift along the vertical direction.

Specifically, as shown in fig. 1, a first annular groove 9 which is recessed inwards is further formed in the base 1, a bearing plate 10 with an annular cross section is welded to the screw rod 3, and the bearing plate 10 is inserted into the first annular groove 9 and is connected with the first annular groove 9 in a rotating fit manner. The bearing plate 10 can fix the screw on the base and can enable the screw to rotate along the circumferential direction.

Preferably, as shown in fig. 1, the base 1 is further provided with a second annular groove 11 concentrically arranged with the first annular groove 9, the second annular groove 11 is located on the upper side of the first annular groove 9, an annular cover plate 12 is embedded in the second annular groove 11, the lower end face of the annular cover plate 12 abuts against the upper end face of the bearing plate 10, and the annular cover plate 12 is fixed on the base 1 through a plurality of bolts 13 arranged along the circumferential direction. Annular apron 12 can carry on spacingly to the bearing plate upper end, and annular apron 12 passes through bolt detachable to be fixed and enables screw rod and bearing plate and can follow the base and pull down on the base.

Specifically, as shown in fig. 1, the elevator limiting structure 5 includes two vertically disposed limiting rods 14 fixed on the annular cover plate 12, the two limiting rods 14 are symmetrically disposed along the center line of the annular cover plate 12, and the limiting rods 14 are inserted into the elevator 4 and slidably connected with the elevator 4. The limiting rod 14 can limit the lifting block 4, so that the lifting block can be lifted along the vertical direction when the screw rod rotates.

Preferably, as shown in fig. 1, the cross section of the limit rod 14 is circular, a limit rod groove 15 adapted to the limit rod 14 is arranged in the lifting block 4, two limit sliding grooves 16 symmetrically arranged along the center line of the limit rod groove 15 are further arranged on two sides of the limit rod groove 15, and height limit blocks 17 inserted into the limit sliding grooves 16 are arranged on two sides of the limit rod 14. The limit block 17 is matched with the limit sliding groove to limit the maximum height of the lifting block which can rise, so that the screw rod is prevented from being separated from the threaded hole.

Specifically, as shown in fig. 1, the hydraulic driving mechanism 6 includes a hydraulic motor 18, the hydraulic motor 18 has a rotatable output shaft, and the output shaft of the hydraulic motor 18 is drivingly connected to the screw rod 3 through the transmission assembly 7, so that the lifting block can be lifted to jack up the heavy object.

Specifically, as shown in fig. 1, the transmission assembly 7 includes a transmission cavity 19 disposed in the base 1, an output shaft of the hydraulic motor 18 is inserted into the transmission cavity 19 along the vertical direction and is fixedly connected to a first helical gear 20, a second helical gear 21 engaged with the first helical gear 20 is further disposed in the transmission cavity 19, the bottom of the screw rod 3 is inserted into the transmission cavity 19 along the vertical direction and is fixedly connected to a third helical gear 22, a fourth helical gear 23 engaged with the third helical gear 22 is further disposed in the transmission cavity 19, and the second helical gear 21 and the fourth helical gear 23 are connected through a rotating shaft 24. When the output shaft of the hydraulic motor 18 rotates, power can be transmitted to the screw rod through the first bevel gear 20, the second bevel gear 21, the rotating shaft 24, the fourth bevel gear 23 and the third bevel gear, so that the lifting block is driven to lift.

Preferably, as shown in fig. 1, two rotation shaft support rods 25 are further disposed in the transmission cavity 19, and the rotation shaft support rods 25 are rotatably connected to the rotation shaft 24. The rotating shaft support rod 25 can lift the rotating shaft 24 and can fix two bevel gears on the rotating shaft 24 to prevent the bevel gears from moving axially.

Preferably, as shown in fig. 1, a rubber cushion 26 is provided on the top of the elevator block 4. The rubber pad layer 26 is made of rubber material, which can increase the friction force on the top of the lifting block and prevent the lifting block from scratching heavy objects.

The utility model discloses a theory of operation is: the hydraulic driving mechanism 6 can drive the screw rod 3 to rotate through the transmission assembly 7, the screw rod 3 can drive the lifting block 4 to lift so as to lift a heavy object, the screw rod and the lifting block are in self-locking connection through threads, sudden drop can not occur even when the hydraulic driving mechanism stops working, and the hydraulic driving mechanism has extremely high safety. Thereby the elevator can be followed vertical direction and go up and down when elevator limit structure 5 can carry on spacingly to the elevator and make the screw rod rotate, it can improve the whole weight that the elevator promoted to set up two elevating gear 2 of preventing falling on the base, and hydraulic drive mechanism 6 in two elevating gear 2 of preventing falling can independently drive the elevator lift jack-up heavy object, can be through a helical gear 20 when the output shaft of hydraulic motor 18 rotates, No. two helical gears 21, pivot 24, No. four helical gears 23 and No. three helical gears with power transmission to the screw rod on, thereby the drive elevator goes up and down, pivot bracing piece 25 can lift pivot 24 and can fix two helical gears on the pivot 24, prevent helical gear axial displacement, rubber cushion 26 has rubber materials to make the frictional force that can increase the elevator top, and can prevent elevator scratch heavy object.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a high safe type hydraulic jack, includes base (1), its characterized in that, base (1) on be equipped with two elevating gear (2) of preventing falling, the elevating gear (2) of preventing falling include through screw rod (3) driven elevator (4), the cross-section semicircular in shape of elevator (4), and two elevator (4) in two elevating gear (2) of preventing falling set up side by side and splice into circularly, base (1) on still be equipped with elevator limit structure (5), base (1) on still be equipped with hydraulic drive mechanism (6), hydraulic drive mechanism (6) link to each other with screw rod (3) through transmission assembly (7).

2. The high-safety hydraulic jack according to claim 1, characterized in that a threaded hole (8) matched with the thread on the screw (3) is formed in the lifting block (4), and the screw (3) is inserted into the threaded hole (8) and is in threaded fit connection with the threaded hole (8).

3. The high-safety hydraulic jack according to claim 2, wherein the base (1) is further provided with a first annular groove (9) which is recessed inwards, the screw (3) is welded with a bearing plate (10) with an annular section, and the bearing plate (10) is inserted into the first annular groove (9) and is connected with the first annular groove (9) in a rotating fit manner.

4. The high-safety hydraulic jack according to claim 3, wherein a second annular groove (11) concentric with the first annular groove (9) is further formed in the base (1), the second annular groove (11) is located on the upper side of the first annular groove (9), an annular cover plate (12) is embedded in the second annular groove (11), the lower end face of the annular cover plate (12) abuts against the upper end face of the bearing plate (10), and the annular cover plate (12) is fixed on the base (1) through a plurality of bolts (13) arranged along the circumferential direction.

5. The high safety hydraulic jack according to claim 4, wherein the lifting block limiting structure (5) comprises two vertically arranged limiting rods (14) fixed on the annular cover plate (12), the two limiting rods (14) are symmetrically arranged along the center line of the annular cover plate (12), and the limiting rods (14) are inserted into the lifting block (4) and are slidably connected with the lifting block (4).

6. The high safety hydraulic jack according to claim 5, wherein the cross section of the limit rod (14) is circular, a limit rod groove (15) matched with the limit rod (14) is arranged in the lifting block (4), two limit sliding grooves (16) symmetrically arranged along the center line of the limit rod groove (15) are further arranged on two sides of the limit rod groove (15), and two limit blocks (17) inserted into the limit sliding grooves (16) are arranged on two sides of the limit rod (14).

7. The high safety hydraulic jack according to any one of claims 1 to 6, characterized in that the hydraulic drive mechanism (6) comprises a hydraulic motor (18), the hydraulic motor (18) having a rotatable output shaft, the output shaft of the hydraulic motor (18) being drivingly connected to the threaded rod (3) via a transmission assembly (7).

8. The high-safety hydraulic jack according to claim 7, wherein the transmission assembly (7) comprises a transmission cavity (19) arranged in the base (1), an output shaft of the hydraulic motor (18) is inserted into the transmission cavity (19) along the vertical direction and fixedly connected with a first helical gear (20), a second helical gear (21) meshed with the first helical gear (20) is further arranged in the transmission cavity (19), the bottom of the screw (3) is inserted into the transmission cavity (19) along the vertical direction and fixedly connected with a third helical gear (22), a fourth helical gear (23) meshed with the third helical gear (22) is further arranged in the transmission cavity (19), and the second helical gear (21) and the fourth helical gear (23) are connected through a rotating shaft (24).

9. The high safety hydraulic jack according to claim 8, characterized in that two pivot support rods (25) are provided in the transmission chamber (19), and the pivot support rods (25) are rotatably connected to the pivot (24).

10. High safety hydraulic jack according to one of claims 1 to 6, characterized in that the lifting block (4) is provided with a rubber cushion (26) on top.