CN202129619U - Diesel engine water tank fixing bolt fastening device - Google Patents

Abstract

The utility model relates to a fastening device for a diesel engine water tank, in particular to a fastening device for a diesel engine water tank fixing bolt, which comprises an input shaft, an intermediate gear shaft, an output gear shaft and a pull rod which is internally contained in the input shaft; the spring seat, the sliding force transmission end face tooth and the free gear are sleeved on the input shaft; a spring is arranged between the spring seat and the sliding force transmission end face teeth; the through pin penetrates through the input shaft and the pull rod to connect the spring seat in an axial key groove of the input shaft in a sliding manner; the radial guide force transmission key of the input shaft is matched with the sliding force transmission end face tooth in a sliding way through threads to be connected into the axial key groove of the input shaft; the end face teeth of the hollow gear are meshed with the sliding force transmission end face teeth; the intermediate gear shaft is respectively meshed with the output gear shaft and the idle gear on the input shaft; one end of the input shaft is connected with a nut in a threaded mode. The utility model discloses fastening efficiency is high, and the power moment of torsion size that passes who has adjusted is invariable, and the fastening effect is reliable.

Description

Diesel engine water tank fixing bolt fastening device

technical field

The utility model relates to a fastening device, in particular to a fastening device for fixing bolts of a water tank of a diesel engine.

Background technique

The diesel engine water tank is a thin-walled shell with a small mouth and a large belly. The bolts connected to the diesel engine body are on the inner bottom of the tank, and the water injection port on the top of the tank is not on a straight line up and down, but is inclined in all directions. The efficiency of tightening bolts with a universal wrench is extremely low; assembly workers cannot see clearly, and universal joint sleeves are often used to tighten bolts on the production site. Compressed air power is used, and the torque applied to the bolts is not constant. If it is too large or too small, it will affect the diesel engine. quality, as shown in Figure 4.

Utility model content

The technical problem to be solved by the utility model is to provide a fastening device with high efficiency and constant torque for the fastening bolts of the diesel engine water tank. The socket wrench installed at the end of the power output shaft can find each working point and quickly complete the tightening work of the bolts.

The technical solution adopted by the utility model to solve the technical problem is: a diesel engine water tank fixing bolt fastening device, including an input shaft, an intermediate gear shaft, an output gear shaft, and a pull rod contained in the input shaft; it is sleeved on the input shaft The spring seat, the sliding force transmission end face tooth and the idle gear; a spring is arranged between the spring seat and the sliding force transmission end face tooth; the threading pin, the threading pin crosses the input shaft and the pull rod to slide the spring seat to the input shaft In the axial keyway; the guide force transmission key, the radial guide force transmission key of the input shaft is slidably connected to the axial keyway of the input shaft through the thread fit of the radial guide force transmission key; the end face teeth of the idler gear and the sliding The gears on the power transmission end face mesh with each other; the intermediate gear shaft meshes with the output gear shaft and the idler gear on the input shaft respectively; one end on the input shaft is threadedly connected with a nut.

The beneficial effect of the utility model is that it solves the defects in the background technology, (1) the tooling is used at the assembly site, the socket wrench is easy to find the working point, and the translation efficiency of the torque transmission is significantly improved; (2) the adjusted transmission The force and torque are constant and reliable, and the products assembled with this device generally do not have the phenomenon that the bolts are not tightened tightly, and the bolts are broken when the torque is too large.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a partial enlarged view of the connection between the sliding force transmission end tooth 8 and the input shaft;

Fig. 3 is a cross-sectional view of a partially enlarged view of the connection between the sliding force transmission end face tooth 8 and the input shaft;

Fig. 4 is a schematic view of the structure of the water tank;

In the figure: 3. Input shaft, 4. Upper bearing seat, 5. Spring seat, 6. Wearing pin, 7. Spring, 8. Slip force transmission end face teeth, 9. Empty gear, 10 Pull rod, 11. Lower bearing Supporting plate, 12. lower bearing seat, 13 output gear shaft, 14. intermediate gear shaft, 15. connecting plate, 16. bearing upper cover plate, 17. guide power transmission key, 18. keyway.

Detailed ways

Now in conjunction with accompanying drawing and preferred embodiment the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

As shown in Figures 1 to 3, a diesel engine water tank fixing bolt fastening device includes an input shaft 3, an intermediate gear shaft 14, an output gear shaft 13, an upper bearing seat 4, a lower bearing seat 12, a connecting plate 15, and a bearing upper cover Plate 16, carriage 11 under the bearing, pull rod 10 contained in the input shaft 3; spring seat 5 set on the input shaft 3; sliding force transmission end face teeth 8 and idler gear 9; spring seat 5 and sliding A spring 7 is provided between the teeth 8 of the force transmission end face; a pin 6 is inserted, and the pin 6 traverses the input shaft 3 and 10 to slide the spring seat 5 into the axial keyway 18 of the input shaft 3; The radial guide force transmission key 17 of the input shaft 3 slides and connects the sliding force transmission end face tooth 8 in the axial keyway 18 of the input shaft 3 through thread fit; 8 are meshed with each other; the intermediate gear shaft 14 is meshed with the idler gear 9 on the output gear shaft 13 and the input shaft 3 respectively; one end on the input shaft 3 is threadedly connected with a nut.

The working principle of the utility model is as follows:

The lower end of the output gear shaft 13 is connected with a socket wrench to directly reach the working point, and the input shaft 3 is exposed outside the water tank, and is connected to the fan wrench to input power, so the work is fast and reliable.

The power is transmitted from the input shaft 3 to the sliding force transmission end face tooth 8 by means of the guide force transmission key 17, and through the pressing action of the spring 7, the sliding force transmission end face tooth 8 transmits the power to the idler gear 9, the middle gear through the end face tooth The gear shaft 14 and the output wheel shaft 13 complete the power transmission, thereby tightening the water tank connecting bolts.

When the tightening torque of the connecting bolt is greater than the fixed value, the helical tooth surface between the end tooth 8 and the idler gear 9 due to the torque increase will cause the axial thrust to increase. When the axial thrust is greater than the set pressure of the spring 7, Slip force transmission end face teeth 8 and idler gear 9 slip on the helical tooth surface. Since the idler gear 9 is idler on the shaft, the power cannot be transmitted to the gear, ensuring that the bolts will not be broken due to excessive tightening torque. .

The bolt tightening torque can be adjusted by adjusting the nut at the lower end of the pull rod 10 and adjusting the axial position of the spring seat 5 with the help of the pin 6 to adjust the pressure of the spring 7, so as to adjust the rated torque transmitted by the safety clutch and adapt to bolts of different specifications Required loading torque requirements.

What is described in the above specification is only the specific implementation of the present utility model, and various illustrations do not limit the essential content of the present utility model. Those of ordinary skill in the art can make specific implementations described before after reading the specification. modification or deformation without departing from the essence and scope of the utility model.

Claims (1)

1. A diesel engine water tank fixing bolt fastening device, comprising an input shaft (3), an intermediate gear shaft (14), an output gear shaft (13), an upper bearing seat (4), a lower bearing seat (12), a connecting plate ( 15), bearing upper cover plate (16) and bearing lower supporting plate (11), characterized in that: the diesel engine water tank fixing bolt fastening device also includes a pull rod (10) contained in the input shaft (3); On the input shaft (3), the spring seat (5), the sliding force transmission end face tooth (8) and the idler gear (9); between the spring seat (5) and the sliding force transmission end face tooth (8) The spring (7); the pin (6) traverses the input shaft (3) and the pull rod (10) to slide the spring seat (5) into the axial keyway (18) of the input shaft (3); the guide force transmission key ( 17), the radial guide force transmission key (17) of the input shaft (3) is slidably connected to the axial keyway (18) of the input shaft (3) by threading the sliding force transmission end face tooth (8); The end face teeth of the sleeve gear (9) mesh with the sliding force transmission end face teeth (8); Engagement, one end of the pull rod (10) is threadedly connected to a nut.

Images