CN213033710U

CN213033710U - Bench drill lifting device

Info

Publication number: CN213033710U
Application number: CN202020700954.4U
Authority: CN
Inventors: 张庆奇; 张春元; 朱金宝; 金传国
Original assignee: Jiangsu Jinfeida Power Tools Co Ltd
Current assignee: Jiangsu Jinfeida Power Tools Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-04-23
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a bench drill elevating gear, including stand pipe, frame and elevating platform, the frame cup joints on the stand pipe, the frame lower extreme is provided with the elevating platform, and the guide pillar is all installed to both sides in the frame, and the card can be dismantled on the stand pipe to elevating platform one end, and the other end both sides overlap respectively on the guide pillar that corresponds, are provided with first rack on the stand pipe, and is relative in the frame be provided with the second rack in the stand pipe, install driving shaft and aversion subassembly on the elevating platform, handle is connected to driving shaft one end, and first gear is installed to the other end, sets up driven subassembly in the elevating platform, and driven subassembly includes second gear, driven shaft, volute spiral spring, the second gear have with the second rack meshing, aversion subassembly is connected with the initiative hub connection. The utility model discloses utilize the double gear rack to go up and down, can bore darker hole on higher part, the utility model discloses be provided with two guide pillars and stand pipe, go up and down along two guide pillars and stand pipe, improved the drilling precision.

Description

Bench drill lifting device

Technical Field

The utility model relates to a bench drill, concretely relates to bench drill elevating gear.

Background

The lifting of the existing bench drill is realized by moving a lifting gear on a rack, the gear can only move on a short rack, the drilling precision is easily influenced, the lifting height is limited, the drilling depth is limited, and the drilling requirement on higher parts cannot be met.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a bench drill elevating gear solves current platform and changes the lifting height limited, problem that drilling depth and precision are not enough.

The technical scheme is as follows: the utility model aims at providing a bench drill elevating gear, including stand pipe, frame and elevating platform, the frame cup joints on the stand pipe, the frame lower extreme is provided with the elevating platform, the guide pillar is all installed to both sides in the frame, elevating platform one end can be dismantled the card and on the stand pipe, and the other end both sides are respectively overlapped on corresponding guide pillar, be provided with first rack on the stand pipe, be provided with the second rack in the frame relatively to the stand pipe, install driving shaft and aversion subassembly on the elevating platform, driving shaft one end is connected the handle, and the other end is installed first gear, set up driven component in the elevating platform, driven component package piece second gear, the second gear have with the second rack meshing, aversion subassembly with the driving shaft is connected, wherein, stir aversion subassembly, order to move the first gear on the driving shaft, the first gear moves to be meshed with the first rack or the second rack, the driving shaft is driven to rotate by the rotating handle, the first gear is driven to move on the first rack or the second rack, and then the chuck of the bench drill is driven to lift.

The lifting platform comprises two split bodies clamped on the guide column, one sides of the two split bodies are connected through a locking shaft, and the locking shaft is connected with a locking handle. A

In order to facilitate driving of the first gear on the driving shaft to shift, the shifting assembly comprises a shifting shaft, the shifting shaft is installed in an installation hole of the lifting platform, one end of the shifting shaft is connected with the shifting handle, the other end of the shifting shaft is sleeved with the compression spring and then connected with the moving block, and the moving block is clamped on the driving shaft.

In order to avoid the frame uncontrolled horizontal hunting in the work, driven subassembly still includes the driven shaft, the driven shaft is installed in the mounting hole of elevating platform, the driven shaft stretches out elevating platform one end and installs the volute spiral spring, the volute spiral spring overcoat has the spring shield and locks through the nut, the second gear is installed on the driven shaft.

In order to facilitate the displacement of the handle to fix the displacement position, the contact surface of the displacement shaft and the mounting hole is a spiral surface.

In order to limit the lifting of the first gear and the second gear, the first rack and the second rack are fixedly installed through screws, and the heads of the screws exceed the common normal line of the racks.

Has the advantages that: the utility model discloses utilize the double gear rack to go up and down, can bore darker hole on higher part, the utility model discloses be provided with two guide pillars and stand pipe, go up and down along two guide pillars and stand pipe, improved drilling precision, simple structure, convenient operation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the elevating platform;

FIG. 3 is a schematic view of the structure of the gantry;

FIG. 4 is a schematic view of the shift knob;

FIG. 5 is a schematic view of the driven assembly mounting structure;

FIG. 6 is a schematic structural view of the first gear engaged with the second rack for ascending and descending;

FIG. 7 is a schematic view of the assembly engaged as the first gear and the second gear are raised and lowered in mesh;

FIG. 8 is a schematic structural view of the first gear engaged with the first rack for lifting and lowering;

fig. 9 is a schematic view of the assembly engaged when the first gear is engaged with the first rack for elevation.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-6, the utility model discloses a bench drill lifting device, which comprises a column tube, a frame and a lifting platform, wherein the frame is sleeved on the column tube, the lower end of the frame is provided with a lifting platform, guide posts are arranged on two sides in the frame through mounting holes, the lifting platform comprises two split bodies clamped on the guide posts, one sides of the two split bodies are connected through a locking shaft, the locking shaft is connected with a locking handle, after the lifting is in place, the lifting platform is locked through rotating the locking handle, so that the bench drill chuck is fixed in position, the other sides of the two split bodies are sleeved on the corresponding guide posts, the column tube is provided with a first rack, the frame is provided with a second rack relative to the column tube, the lifting platform is provided with a driving shaft and a shifting component, the driving shaft is arranged in a driving shaft mounting hole 20 of the lifting platform, one end of the driving shaft is connected with, the driven assembly comprises a driven shaft and a second gear, the driven shaft is installed in a driven shaft installation hole 19 of the lifting platform, the driven shaft 16 extends out of one end of the lifting platform to be provided with a scroll spring 22, the scroll spring 22 is sleeved with a spring shield 23 and locked through a nut 24, the second gear is installed on the driven shaft, the second gear is always meshed with the second gear, the shifting assembly comprises a shifting shaft, the shifting shaft is installed in a shifting shaft installation hole 18 of the lifting platform, the contact surface of the shifting shaft and the installation hole is a spiral surface, one end of the shifting shaft is connected with a shifting handle, the other end of the shifting shaft is sleeved with a compression spring to be connected with a moving block, the lower part of the moving block is U-shaped, and the shifting. When the shifting handle is shifted, the moving block pushes the first gear on the driving shaft to move along with the shifting handle, the first rack and the second rack are respectively installed and fixed on the upright post pipe and the guide post through the screws 21, the head of the screw exceeds the common normal line of the racks, and the first gear and the second gear stop lifting once touching the screws in the lifting process.

Use the utility model discloses the time, stir the aversion handle, as shown in fig. 6-7 when the screw face height adaptation of aversion handle 13 and mounting hole, first gear 9 and the meshing of second rack 6 on the driving shaft 7 rotate driving shaft handle 8 this moment, drive driving shaft 7 and rotate, drive first gear 9 and second gear 10 and all move along second rack 6, and then drive bench drill chuck along guide pillar 4 and 1 lift of stand pipe. When the shifting handle 13 is shifted, when the high surface of the shifting handle 13 is in contact with the high surface of the spiral surface of the mounting hole, as shown in fig. 8-9, the first gear 9 on the driving shaft 7 moves, the first gear 9 is meshed with the first rack 6, the driving shaft 7 is driven to rotate by rotating the handle 8, the first gear 9 is driven to move along the first rack 5, and the machine head part (the rack part) is lifted up and down on the stand column pipe.

The utility model discloses a driving shaft 7 drives first gear 9 rotatory, makes second rack 6 that meshes with it move down along stand pipe 1 axial, because second rack 6 is fixed in the frame, so drive the frame and move down along stand pipe 1 axial, is operating condition this moment, and second rack 6 drives second gear 10 rotatory, makes the volute spiral spring 22 on the driven shaft 16 that transversely places for stand pipe 1 reverse the torsion; after the external force acting on the driving shaft 7 is removed, the driven shaft 16 is driven to rotate reversely by the self counterforce of the volute spiral spring 22, so that the rack is reset, and the problem that the rack swings left and right uncontrollably in work due to the counterforce of a compression spring of some vertical bench drills is solved.

Claims

1. A bench drill lifting device is characterized by comprising a stand column pipe (1), a rack (2) and a lifting platform (3), wherein the rack (2) is sleeved on the stand column pipe (1), the lower end of the rack (2) is provided with the lifting platform (3), guide pillars (4) are respectively installed on two sides in the rack (2), one end of the lifting platform (3) can be detachably clamped on the stand column pipe (1), two sides of the other end of the lifting platform are respectively sleeved on the corresponding guide pillars (4), a first rack (5) is arranged on the stand column pipe (1), a second rack (6) is arranged in the rack (2) and opposite to the stand column pipe, a driving shaft (7) and a shifting assembly are installed on the lifting platform (3), one end of the driving shaft (7) is connected with a handle (8), the other end of the driving shaft is provided with a first gear (9), a driven assembly is arranged in the lifting platform (3), the driven assembly wraps a second gear (10), the second gear (10) is meshed with the second rack (6), the shifting assembly is connected with the driving shaft (7), the shifting assembly drives the first gear (9) on the driving shaft (7) to move to a position meshed with the first rack (5) or the second rack (6), and the handle (8) drives the driving shaft (7) to rotate so as to drive the first gear (9) to move on the first rack (5) or the second rack (6), so that the chuck of the bench drill is driven to lift.

2. The bench drill lifting device according to claim 1, characterized in that the lifting platform (3) comprises two split bodies clamped on the guide post, one side of the two split bodies is connected by a locking shaft, and the locking shaft is connected with a locking handle (11).

3. The bench drill lifting device according to claim 1, wherein the displacement assembly comprises a displacement shaft (12), the displacement shaft (12) is installed in an installation hole of the lifting platform, one end of the displacement shaft (12) is connected with a displacement handle (13), the other end of the displacement shaft is sleeved with a compression spring (14) and then connected with a movable block (15), and the movable block (15) is clamped on the driving shaft (7).

4. The bench drill lifting device according to claim 1, wherein the driven assembly further comprises a driven shaft (16), the driven shaft (16) is installed in a mounting hole of the lifting platform, a spiral spring (22) is installed at one end of the driven shaft (16) extending out of the lifting platform, a spring shield (23) is sleeved outside the spiral spring (22) and locked by a nut (24), and the second gear (10) is installed on the driven shaft (16).

5. The bench drill lifting device according to claim 3, wherein the contact surface of the displacement shaft (12) with the mounting hole is a helicoid (17).

6. Bench drill lifting device according to claim 1, characterised in that the first (5) and second (6) racks are mounted and fixed by means of screws (21), the heads of which exceed the common normal of the racks.