CN206708362U - Vertical type sliding gear gearshift - Google Patents

Abstract

The utility model discloses a kind of vertical type sliding gear gearshift, including change gear box, splined shaft and shifting shaft, clutch shaft bearing and first, second balladeur train are disposed with splined shaft from top to bottom, the first balladeur train is interference fitted with clutch shaft bearing inner ring；Feed screw nut has been screwed under shifting shaft on thread segment, feed screw nut is fixedly connected with by shift fork and clutch shaft bearing outer ring, on shifting shaft handwheel is fixed with the top of thread segment, location nut has been screwed on shifting shaft on thread segment, level offers locating slot in location nut, and support is fixed with change gear box, is spaced apart on support and is provided with positioning hole, during positioning, location nut is fixedly connected with by being located in positioning hole, the alignment pin in locating slot and support successively.The utility model is simple in construction, easy to operate, while has positioning, indicative function, by determine location nut move distance can the balladeur train of accurate judgement first, second position, ensure smoothly gearshift, effectively prevent out of supply.

Description

Vertical type sliding gear gearshift

Technical field

Gearshift is the utility model is related to, more particularly, to a kind of vertical type sliding gear gearshift.

Background technology

Balladeur train has the features such as simple in construction, easy to operate, cost is low, and reliability is high, and power transmission efficiency is high, often For lathe, ship, motor vehicles, drilling equipment gearbox in.Existing balladeur train gear shifting structure is typically mostly horizontal Shifting-fork gear-shifting structure, shift fork one end are connected with handle, and the other end is connected by synchronizer with splined shaft, by operating shift fork Drive synchronizer is reciprocating, and synchronizer is meshed with balladeur train makes balladeur train be nibbled with the gear on power input shaft Close, realize smoothly gearshift, effectively prevent out of supply.But processing and drilling equipment for big workpiece, due to workpiece or drilling tool sheet Body from it is great, gearshift is inaccurate, easily out of supply, influence the normal work of vertical lathe or drilling equipment, while safety also be present Hidden danger.How to design it is a kind of can smoothly shift gears, prevent out of supply and safe balladeur train gearshift be art technology The key issue of personnel's research.

The content of the invention

The utility model purpose is to provide a kind of anti-out of supply, safe and has positioning, the vertical cunning of indicative function Moving gear gearshift.

To achieve the above object, the utility model takes following technical proposals：

Vertical type sliding gear gearshift described in the utility model, including change gear box, vertical spacing are arranged on institute The splined shaft and shifting shaft in change gear box are stated, is disposed with clutch shaft bearing, the first cunning on the splined shaft from top to bottom Moving gear and the second balladeur train, first, second balladeur train are fixedly connected with, in the first balladeur train and the clutch shaft bearing Circle interference fit；The shifting shaft includes extending upward the upper thread segment of the change gear box and in change gear box Lower thread segment, screwed feed screw nut on thread segment under shifting shaft, the feed screw nut passes through shift fork and clutch shaft bearing outer ring It is fixedly connected with, is fixed with handwheel at the top of thread segment on shifting shaft, has been screwed on thread segment on the shifting shaft below the handwheel Location nut, level offers locating slot in the location nut, is fixed with the change gear box of location nut side The support of Z-shape structure, it is spaced apart on the support and is provided with aperture and the locating slot groove footpath identical positioning hole, during positioning, Location nut is fixedly connected with by being located in the positioning hole, the alignment pin in locating slot and support successively.

Ratio on the shifting shaft between the lead of the lead of thread segment and its lower thread segment is 1:5~1: 10。

The utility model advantage is simple in construction, easy to operate, while has positioning, indicative function, and then effectively keep away Exempt from phenomenon out of supply occur during gearshift.It is of the present utility model to position, indicate that principle is as follows：Positioning hole and location nut upper and lower two Individual specified location corresponds, and is fixed location nut by wearing alignment pin；By determining the distance of location nut movement i.e. Can the balladeur train of accurate judgement first, second position, upper and lower two specified locations of location nut respectively with first, second slide The operating position of moving gear is corresponding, ensures smoothly gearshift, effectively prevents out of supply.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the mplifying structure schematic diagram in A portions in Fig. 1.

Embodiment

As shown in Figure 1 and Figure 2, vertical type sliding gear gearshift of the present utility model, including change gear box 1, it is vertical between When the splined shaft 2 and shifting shaft 3 being arranged in the change gear box 1, actual installation, splined shaft 2 passes through aligning roller axle Hold 14.1,14.2 to be arranged on change gear box 1, shifting shaft 3 passes through deep groove ball bearing 15.1,15.2 and the phase of change gear box 1 Connection；It is disposed with clutch shaft bearing 4, the first balladeur train 5 and the second balladeur train 6 on splined shaft 2 from top to bottom, first, Second balladeur train 5,6 is fixedly connected with, and the first balladeur train 5 is interference fitted with the inner ring of clutch shaft bearing 4；Also set in change gear box 1 First, second travelling gear driven by power-driven system is equipped with, is made by moving up and down first, second balladeur train 5,6 First balladeur train 5 accurately engages with the first travelling gear or the second balladeur train 6 is meshed with the second travelling gear；As Fig. 1, Shown in Fig. 2, shifting shaft 3 includes extending upward the upper thread segment of change gear box 1 and the lower screw thread in change gear box 1 Section, feed screw nut 7 has been screwed on 3 times thread segments of shifting shaft, feed screw nut 7 is fixedly connected with by shift fork 8 and the outer ring of clutch shaft bearing 4, Handwheel 9 is fixed with the top of thread segment on shifting shaft 3, drives shifting shaft 3 to rotate by rotation hand wheel 9,3 times thread segments of shifting shaft drive Dynamic feed screw nut 7 moves up or down, feed screw nut 7 by the balladeur train 5,6 of the driving of shift fork 8 first, second upwards or to Lower movement；Location nut 10 has been screwed on thread segment on the shifting shaft 3 of the lower section of handwheel 9, has rotated handwheel 9, spiral shell on shifting shaft 3 Line section driving location nut 10 moves up or down, and level offers locating slot in location nut 10, positioned at location nut 10 The support 11 of Z-shape structure is fixed with the change gear box 1 of side, is spaced apart on the vertical portion of support 11 and is provided with two positioning holes 12, the aperture of positioning hole 12 is identical with the groove footpath of locating slot, and after shift speed change, the locating slot of location nut 10 is fixed with one of them Position hole 12 is arranged concentrically, and alignment pin 13 is plugged in positioning hole 12, in locating slot successively, and then location nut 10 is fixed on into support On 11, shifting shaft 3 stops operating, and has positioning action；On shifting shaft 3 between the helical pitch of thread segment and its lower thread segment helical pitch Than for 1:10, i.e., the distance that feed screw nut 7 moves when 3 times thread segments of shifting shaft rotate a circle is that thread segment rotates on shifting shaft 3 10 times of the displacement of location nut 10 during one circle, by determining the distance that thread segment moves on shifting shaft 3 of location nut 10 The displacement of first, second balladeur train 5,6 can accurately be controlled, realize first, second balladeur train 5,6 respectively with speed change First, second travelling gear in gear-box 1 accurately engages, and effectively prevents out of supply, realization smoothly gearshift.

During work, shifting shaft 3 is driven to rotate by rotation hand wheel 9,3 times thread segments of shifting shaft are driven by feed screw nut 7 Shift fork 8 moves down, shift fork 8 drive first, second balladeur train 5,6 move down, while on shifting shaft 3 thread segment positioning Nut 10 moves down, when location nut 10 reaches specified location, locating slot and the bottom of support 11 in location nut 10 Positioning hole 12 it is concentric, alignment pin 13 is sequentially inserted into positioning hole 12, in locating slot, for stationary positioned nut 10, shifting shaft 3 Stop operating, now the second balladeur train 6 accurately engages with the second travelling gear, realizes smoothly gearshift, while avoid out of supply；Need When shifting gears again, alignment pin 13 is removed, opposite direction rotates handwheel 9, you can realizes the first balladeur train 5 and the first travelling gear Accurate engagement, realize smoothly gearshift.

Claims (2)

1. a kind of vertical type sliding gear gearshift, including change gear box（1）, vertical spacing be arranged on the change gear box （1）Interior splined shaft（2）And shifting shaft（3）, it is characterised in that：The splined shaft（2）On be disposed with first from top to bottom Bearing（4）, the first balladeur train（5）With the second balladeur train（6）, first, second balladeur train（5、6）It is fixedly connected with, the One balladeur train（5）With the clutch shaft bearing（4）Inner ring is interference fitted；The shifting shaft（3）Including extending upward the change Fast gear-box（1）Upper thread segment and positioned at change gear box（1）Interior lower thread segment, shifting shaft（3）Screwed on lower thread segment There is feed screw nut（7）, the feed screw nut（7）Pass through shift fork（8）With clutch shaft bearing（4）Outer ring is fixedly connected with, shifting shaft（3）Upper spiral shell Handwheel is fixed with the top of line section（9）, positioned at the handwheel（9）The shifting shaft of lower section（3）Location nut has been screwed on upper thread segment （10）, the location nut（10）Upper level offers locating slot, positioned at location nut（10）The change gear box of side（1）On It is fixed with the support of Z-shape structure（11）, the support（11）Upper be spaced apart is provided with aperture and the locating slot groove footpath identical Positioning hole（12）, during positioning, location nut（10）By being located in the positioning hole successively（12）, alignment pin in locating slot （13）With support（11）It is fixedly connected with.

2. vertical type sliding gear gearshift according to claim 1, it is characterised in that：The shifting shaft（3）Upper screw thread Ratio between the lead of the lead of section and its lower thread segment is 1:5~1:10.