CN201390986Y - Connecting device used on telescopic frame of vehicle - Google Patents

Abstract

The utility model discloses a connecting device used on a telescopic frame of a vehicle, which comprises a pin boss installed on a walking frame, a pin roll inserted in the pin boss and connected with a lock hole of the walking frame and a lock hole of a main frame of the vehicle, and a locking bolt. A first screw hole matching with the locking bolt is arranged on the pin boss and a perforation matching with the locking bolt is arranged on the pin roll. The connecting device is characterized in that the pin boss extends outward to have an extension section on which a second screw hole matching with the locking bolt is arranged, and the distance between the second screw hole and the first screw hole matches with the distance between the lock hole of the walking frame and the lock hole of the main frame. The pin boss is lengthened to have an extension section, and the distance between the second screw hole and the first screw hole matches with the distance between the lock hole of the walking frame and the lock hole of the main frame, so by retracting the pin roll until the perforation corresponds with the second screw hole, the telescopic frame can be adjusted without disengaging the pin roll with the pin boss, thereby providing a place for the pin roll and avoiding the loss of the pin roll.

Description

A kind of coupling arrangement that is used on the flexible vehicle frame

Technical field

The utility model relates to a kind of coupling arrangement, is specifically related to a kind of coupling arrangement that is used on the flexible vehicle frame of engineering machinery.

Background technology

In daily building is produced; use engineering machinery such as excavator, dismounting machine, crawler crane, rotary drilling rig through regular meeting; these machineries mainly are made up of running gear, slewing equipment, equipment and control device; equipment is a device of directly finishing mining task; and slewing equipment and running gear are the bodies of hydraulic crawler excavator; equipment is transferred on slewing equipment, and slewing equipment is fixed on the underframe of running gear, for example our common excavator.

According to the tonnage difference of excavator, can be divided into 10 tons with interior digging for a short time, 10～20 tons medium and small digging dug in 20～30 tons, and digging greatly more than 30 tons.In general the rack section in the running gear of large-scale digging machine adopts split-type structural, especially the digging machine more than 36 tons, so-called split-type structural is meant that the traveling vehicle frame of both sides installation traveling crawler is split type the connection with the main car frame (crossbeam) of centre, is fastenedly connected by coupling arrangement between main car frame and the traveling vehicle frame.In order to guarantee the stability of car body, the width of running gear is bigger, when transportation, need be with the distance between the walker of the left and right sides suitable minimizing, so that car load is left transport vehicle, so just need not take parts apart and transport respectively, be convenient to the transfer of engineering machinery between different work ground; Whole Transporting can not influence the work capacity of digging machine simultaneously, but descends to some extent with the more stable property of deployed condition, therefore in normal operation, also needs left and right sides walker is launched, and guarantees job safety.

The coupling arrangement of fastening main car frame and traveling vehicle frame, as shown in Figure 1, comprise bearing pin 1, key seat 2 and lock bolt 3, key seat 2 is welded on the walker 7, offer on the key seat 2 with main car frame on the pin joint hole that connects of lockhole, in bearing pin 1 is inserted in lockhole on the main car frame along the pin joint hole,, make relative fixed between traveling vehicle frame 7 and the main car frame again by lock bolt 3 locking bearing pins 1.When adjusting vehicle frame, need to extract lock bolt 3 out, extract bearing pin, operating hydraulically operated oil cylinder stretches out vehicle frame or is retracted to suitable position, inserts bearing pin, and locking lock bolt 3 makes traveling vehicle frame 7 and main car frame locking.

From the above; adjust when stretching the vehicle frame state; need extract bearing pin; and bearing pin is to be provided with separately; do not have fixing placement location on locomotive, arbitrarily be positioned on the construction plant, the present ground of constructing is comparatively mixed and disorderly again; thereby the loss that causes bearing pin through regular meeting, make troubles for normal use of locomotive.

Summary of the invention

The utility model purpose provides a kind of coupling arrangement that is used on the flexible vehicle frame, by the improvement to structure, can avoid the loss of bearing pin, guarantees the normal use of locomotive.

For achieving the above object, the technical solution adopted in the utility model is: a kind of coupling arrangement that is used on the flexible vehicle frame, comprise the key seat that is installed on the traveling vehicle frame, be inserted in the key seat, the bearing pin that connects traveling vehicle frame lockhole and main car frame lockhole, and lock bolt, described key seat is provided with first screw that cooperates with described lock bolt, described bearing pin is provided with the through hole that cooperates with described lock bolt, described key seat extends outward and increases section, described growth section is provided with second screw that cooperates with described lock bolt, the distance between this second screw and described first screw and described traveling vehicle frame lockhole extremely described main car frame lockhole apart from cooperating.

Above, running gear is one of building block in engineering machinery such as excavator, the crawler crane etc., usefulness for engineering machinery walking, on large-scale engineering machinery, generally include a flexible vehicle frame, mainly the traveling vehicle frame of traveling crawler and middle main car frame (crossbeam) formation are installed by both sides, on traveling vehicle frame and main car frame, be respectively equipped with the lockhole that the supply and marketing axle is pegged graft, when bearing pin after key seat inserts two lockholes, just traveling vehicle frame and main car frame are fixed.In the technique scheme, described key seat extends outward and increases section, on the growth section, second screw is set, and the distance between first screw is an axial line distance between the two, this distance is complementary with lockhole to the lockhole axial distance on the main car frame on the traveling vehicle frame, being about to bearing pin extracts out, make its through hole corresponding with second screw on the key seat, with lock bolt in second screw inserts through hole, the locking bearing pin, the end of bearing pin has broken away from the lockhole of main car frame at this moment, makes between main car frame and the traveling vehicle frame and can move mutually, adjusts the vehicle frame state; After the end to be adjusted, unclamp lock bolt, key seat is pushed in the key seat, make the through hole of bearing pin corresponding, be screwed into lock bolt again with key seat first screw, fixed pin shaft, thus make traveling vehicle frame and main car frame locked.Because bearing pin still stays in key seat when being drawn out of, and is fixed by lock bolt, so just having solved bearing pin does not have proprietary problem of placing the position, when avoiding adjusting the vehicle frame state bearing pin is lost; Moreover bearing pin is slippage in key seat, need not to take out, and has made things convenient for operating personnel's use, has alleviated operation intensity.

In the technique scheme, the outer end of described bearing pin is provided with handle, and the junction of handle and described bearing pin is provided with gag lever post, and extend to the outside of described bearing pin respectively at these gag lever post two ends, respectively be opened in described key seat on the U-shaped slot cooperate.The setting of the handle of described bearing pin outer end and bearing pin junction gag lever post, extend laterally at its two ends, and cooperate with slot on the key seat, when key seat inserts key seat, insert along the U-shaped slot extension, the outside of gag lever post, prevent bearing pin mistake rotation in key seat, make the position of the through hole on the bearing pin corresponding with first, first screw on the key seat all the time, be convenient to operating personnel lock bolt is screwed in the through hole.

In the technique scheme, be connected through a chain between described lock bolt and described bearing pin.The setting of described chain makes lock bolt be connected with bearing pin, avoids the loss of lock bolt.

Because the technique scheme utilization, the advantage that the utility model compared with prior art has is:

1, owing to the utility model key seat is stretched out, and second screw is set on the extension, and distance between first screw of locking vehicle frame state and traveling vehicle frame lockhole are to the distance coupling between the main car frame lockhole, thereby when needs are adjusted the vehicle frame state, extract bearing pin out, make its through hole corresponding with second screw, fix by lock bolt, this moment, the bearing pin terminal part broke away from the main car frame lockhole, and is unrestricted between two vehicle frames, slippage mutually, adjust the vehicle frame state, bearing pin is inserted after the adjustment, lock bolt is connected with through hole through first screw again, the locking vehicle frame; So when adjusting, bearing pin need not be drawn out of key seat, for bearing pin provides proprietary placement location, avoids the loss of bearing pin, guarantees the normal use of locomotive;

2, because bearing pin is positioned at the key seat slippage all the time, and need not break away from key seat,, be convenient to operation so alleviated operating personnel's labour intensity;

3, handle and bearing pin junction are provided with gag lever post, its two ends outside are respectively extended with U-shaped slot on the key seat and are cooperated, make the slippage of bearing pin in key seat be subject to the position of slot, thereby make the through hole on the bearing pin corresponding with the position of first, second screw on the key seat all the time, be convenient to the operating personnel lock bolt is screwed into, it is more convenient to use;

4, be connected by a chain between lock bolt and bearing pin, can prevent that lock bolt from losing, and the convenient working personnel operation;

5, the utility model is easy to use, and is simple in structure, is easy to realize.

Description of drawings

Fig. 1 is a mounting structure schematic diagram of the prior art;

Fig. 2 is the schematic diagram during lock-out state among the utility model embodiment one;

Fig. 3 is the schematic diagram during open mode among the utility model embodiment one;

Fig. 4 is the cross-sectional schematic of key seat among the utility model embodiment one;

Fig. 5 is the structural representation of bearing pin among the utility model embodiment one;

Fig. 6 is the mounting structure schematic diagram of the utility model embodiment one;

Fig. 7 is the local enlarged diagram of Fig. 6.

Wherein: 1, bearing pin; 2, key seat; 3, lock(ing) bolt; 4, chain; 5, first screw; 6, second screw; 7, traveling vehicle frame; 8, handle; 9, through hole; 10, slot; 11, gag lever post; 12, main car frame.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: extremely shown in Figure 7 referring to Fig. 2, a kind of coupling arrangement that is used on the flexible vehicle frame, comprise the key seat 2 that is installed on the traveling vehicle frame 7, be inserted in the key seat 2, the bearing pin 1 that connects traveling vehicle frame 7 lockholes and main car frame 12 lockholes, and lock bolt 3, described key seat 2 is provided with first screw 5 that cooperates with described lock bolt 3, described bearing pin 1 is provided with the through hole 9 that cooperates with described lock bolt 3, described key seat 2 extends outward and increases section, described growth section is provided with second screw 6 that cooperates with described lock bolt 3, and this second screw 6 cooperates with the distance of described traveling vehicle frame 7 lockholes to described main car frame 12 lockholes with the distance of 5 of described first screws; The outer end of described bearing pin 1 is provided with handle 8, handle 8 is provided with gag lever post 11 with the junction of described bearing pin 1, extend to the outside of described bearing pin 1 respectively at these gag lever post 11 two ends, respectively be opened in described key seat 2 on U-shaped slot 10 cooperate, at bearing pin 1 in key seat 2 during slippage, it is constant that gag lever post 11 defines the radial position of bearing pin 1, corresponding with the position of first, second screw all the time, makes things convenient for being screwed into of lock bolt.

As shown in Figure 7,1 of described lock bolt 3 and described bearing pin are connected through a chain 4, and an end of this chain 4 is fixedlyed connected with the end of lock bolt 3, and the other end is connected with handle 8 on the bearing pin 1, avoids the loss of lock bolt.

During use, when being in the lock state, as shown in Figure 2, bearing pin 1 is inserted in the key seat 2, and lock bolt 3 passes in the through hole 9 that first screw 5 is screwed into bearing pin 1, the bearing pin 1 that is locked, thereby the relative position of locking traveling vehicle frame 7 and main car frame 12; As shown in Figure 3, when needs are adjusted the relative position of walker 7 and main car frame 12, to extract in first screw 5 of lock bolt 3 from the key seat 2, outwards extract bearing pin 1 again out, corresponding until through hole 9 with second screw 6 on the key seat 2, be screwed into lock bolt 3, bearing pin 1 just is in open mode, the relative position of adjustable whole walker 7 and main car frame 12; After adjusting end, lock bolt 3 is extracted from second screw 6, bearing pin 1 is pushed key seat 2 until the bottom, this moment, through hole was corresponding with first screw 5, bearing pin 1 connects traveling vehicle frame 7 lockholes and main car frame 12 lockholes, lock bolt 3 is screwed in the through hole 9 through first screw 5, is in the lock state once more.

Claims (3)

1. coupling arrangement that is used on the flexible vehicle frame, comprise the key seat (2) that is installed on the traveling vehicle frame (7), be inserted in the key seat (2), the bearing pin (1) that connects traveling vehicle frame (7) lockhole and main car frame (12) lockhole, and lock bolt (3), described key seat (2) is provided with first screw (5) that cooperates with described lock bolt (3), described bearing pin (1) is provided with the through hole (9) that cooperates with described lock bolt (3), it is characterized in that: described key seat (2) extends outward and increases section, described growth section is provided with second screw (6) that cooperates with described lock bolt (3), the distance between this second screw (6) and described first screw (5) and described traveling vehicle frame (7) lockhole extremely described main car frame (12) lockhole apart from cooperating.

2. the coupling arrangement that is used on the flexible vehicle frame according to claim 1, it is characterized in that: the outer end of described bearing pin (1) is provided with handle (8), handle (8) is provided with gag lever post (11) with the junction of described bearing pin (1), extend to the outside of described bearing pin (1) respectively at this gag lever post (11) two ends, respectively be opened in described key seat (2) on U-shaped slot (10) cooperate.

3. the coupling arrangement that is used on the flexible vehicle frame according to claim 1 is characterized in that: be connected through a chain (4) between described lock bolt (3) and described bearing pin (1).

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