CN220910344U - Counterweight mounting device of engineering machinery - Google Patents

Abstract

The present utility model relates to a counterweight mounting device for engineering machinery, comprising: the device comprises a counterweight mounting seat, a counterweight block, a connecting rod, a locating pin and a fixing bolt; two counter weight installation lugs are symmetrically arranged at the left end and the right end of each counter weight installation lug, a connecting screw hole and a first positioning pin hole are respectively arranged at the upper end of each counter weight installation lug, a connecting rod is fixed above the counter weight installation lug through the connecting screw hole, a positioning pin is fixed above the counter weight installation lug through the first positioning pin hole, two symmetrical through holes matched with the connecting rod are formed in the counter weight, two symmetrical positioning pin holes matched with the positioning pin are formed in the end part of the counter weight, a plurality of counter weights are installed above the counter weight installation lug through the through holes penetrating through the counter weight by the connecting rod, fixing bolts are installed at the top end of the connecting rod, the positioning pin is fixedly installed in the positioning pin holes, and the technical problems that lateral sliding easily occurs between an engineering mechanical frame for installing the counter weight and the counter weight are solved, and the weight is not adjustable are solved.

Description

Counterweight mounting device of engineering machinery

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a counterweight mounting device of engineering machinery.

Background

The engineering machinery is provided with the counterweight at a specific position, so that the stability of the engineering machinery is improved. At present, the forms of the counterweight installation devices used by engineering machinery are various, and most counterweight installation devices use bolts to limit the counterweight, however, the bolts are easy to loosen or fall off, so that lateral sliding is easy to occur between a frame of the engineering machinery for installing the counterweight and the counterweight, and the use safety of the engineering machinery is affected. In addition, the counterweight weight of existing work machines is generally not adjustable or the counterweight weight adjustment range is limited. It is therefore desirable to have a counterweight mounting device for a construction machine that addresses the problems of the prior art.

Disclosure of utility model

First, the technical problem to be solved

In view of the above-mentioned drawbacks and shortcomings of the prior art, the present utility model provides a counterweight mounting apparatus for construction machinery, which solves the technical problem that lateral sliding is easy to occur between a frame of the construction machinery for mounting a counterweight and the counterweight, and the weight of the counterweight is not adjustable.

(II) technical scheme

In order to achieve the above object, the present utility model provides a counterweight mounting device for construction machinery, comprising: the device comprises a counterweight mounting seat, a counterweight block, a connecting rod, a locating pin and a fixing bolt; two counter weight installation lugs are symmetrically arranged at the left end and the right end of each counter weight installation lug, screw holes and first positioning pin holes are respectively formed in the upper end of each counter weight installation lug, a connecting rod is fixed above the counter weight installation lug through the screw holes, positioning pins are fixed above the counter weight installation lugs through the first positioning pin holes, two symmetrical through holes matched with the connecting rod are formed in the counter weights, two symmetrical positioning pin holes matched with the positioning pins are formed in the end portions of the counter weights, the connecting rod is used for installing a plurality of counter weights above the counter weight installation lug through the through holes in the through holes, fixing bolts are installed at the top ends of the connecting rod to achieve height limiting, the positioning pins are fixedly installed in the positioning pin holes, and relative sliding between the counter weights is limited.

According to the utility model, the installation of any number of balancing weights and the universalization of the connecting rods and the locating pins are realized through the fixed connection of the connecting rods and the form fit of the locating pins and the locating pin holes of the balancing weights, and the connection reliability of the balancing weights and the engineering machinery frame is improved.

Preferably, the upper ends of the two counterweight mounting lugs are the mounting planes of the counterweight, and the axes of the screw holes and the axes of the positioning pin holes are respectively perpendicular to the upper ends of the two counterweight mounting lugs.

Preferably, the balancing weight comprises a basic balancing weight and a top balancing weight, the basic balancing weight is installed above the counterweight installation seat through a connecting rod and a locating pin, and the top balancing weight is arranged at the upper end of the basic balancing weight.

Preferably, the connecting rods include a base connecting rod and a top connecting rod.

Preferably, the whole cylinder that is of basic connecting rod, basic connecting rod wears to establish in the through-hole of basic balancing weight, basic connecting rod includes: the device comprises a base connecting rod, a first threaded hole, a first screw rod and a first clamping part, wherein the first threaded hole is formed in the inner side of the top end of the base connecting rod, the first screw rod is arranged at the bottom end of the base connecting rod, the first screw rod is matched with the first threaded hole in a threaded mode, the depth of the first threaded hole is larger than or equal to that of the first screw rod, the first clamping part is arranged at the middle part of the base connecting rod, and the outer surface of the first clamping part is in a regular hexagon shape and is used for fastening connection between the base connecting rods.

Preferably, the top connecting rod is wholly cylindrical, the top connecting rod wears to establish in the through-hole of top balancing weight, the top connecting rod includes: the second screw rod, second screw hole and second clamping part, the second screw hole sets up the inboard on top connecting rod top is encircleed the outside on top connecting rod top is provided with the toper and connects the guide face the fixing bolt is installed on top connecting rod top, the second screw rod sets up the bottom of top connecting rod, the second screw rod with the screw thread matching of first screw hole, just the degree of depth of first screw hole is greater than the length of second screw rod, the second clamping part sets up the middle part of top connecting rod, the surface of second clamping part is regular hexagon, be used for the fastening connection between top connecting rod and the basic connecting rod.

Preferably, the counterweight mounting device further comprises a limiting plate, and the limiting plate is arranged between the top end of the top connecting rod and the fixing bolt.

Preferably, the upper end and the lower end of the locating pin are respectively cylindrical, a conical locating guide surface is arranged at the top of the upper end of the locating pin, a middle step is arranged at the middle part of the locating pin, a chamfer is arranged at the bottom of the lower end of the locating pin, and the diameter of the middle step is larger than that of the upper end and the lower end of the locating pin.

Preferably, the positioning pin hole is a counter bore, the positioning pin hole comprises a first positioning pin hole and a second positioning pin hole, the first positioning pin hole which is symmetrically arranged is further arranged at the top of the basic balancing weight, and the second positioning pin hole which is symmetrically arranged is respectively arranged at the bottom of the basic balancing weight and the bottom of the top balancing weight.

Preferably, the first positioning pin hole is in a T shape, the upper part of the first positioning pin hole is in stepped fit with the middle of the positioning pin, and the lower part of the first positioning pin hole is in fit with the lower end of the positioning pin; the second positioning pin hole is cylindrical, and the second positioning pin hole is matched with the upper end of the positioning pin.

(III) beneficial effects

The counterweight installation device of the engineering machinery has the following beneficial effects:

1. The counter weight installation device can contain a plurality of basis balancing weights, through the quantity that increases and decreases basis balancing weights, realizes counter weight adjustable.

2. And positioning pins are adopted between the foundation balancing weights and the counterweight mounting seats, between the foundation balancing weights and the top balancing weights to limit sliding among the balancing weights, so that the reliability of connection of the engineering machinery balancing weights is improved.

3. The connecting rod adopts sectional type design, can match corresponding connecting rod height according to the counter weight quantity of actual demand, adopts safe and reliable helicitic texture to connect between the connecting rod, and the counter weight top uses the bolt-up connecting rod, compresses tightly the balancing weight, avoids engineering machine tool during operation balancing weight at counter weight direction of height drunkenness.

Drawings

FIG. 1 is a schematic view of a construction of a counterweight mounting device of an engineering machine according to the utility model;

FIG. 2 is a cross-sectional view of a counterweight mounting device of a work machine of the utility model;

FIG. 3 is a schematic view of a counterweight mounting seat of the present utility model;

FIG. 4 is a schematic view of the basic connecting rod of the present utility model;

FIG. 5 is a schematic view of the structure of the top connecting rod of the present utility model;

fig. 6 is a schematic structural view of a positioning pin according to the present utility model.

[ Reference numerals description ]

101: A counterweight mounting seat;

102: a base balancing weight;

103: a base connecting rod;

104: a positioning pin;

105: pushing the balancing weight;

106: a top connecting rod;

107: a limiting plate;

108: a fixing bolt;

109: a screw hole;

110: a first positioning pin hole;

111: and a second locating pin hole.

Detailed Description

The invention will be better explained for understanding by referring to the following detailed description of the embodiments in conjunction with the accompanying drawings.

The counterweight installation device of the engineering machinery provided by the embodiment of the invention supports the installation of any number of counterweights, realizes the universalization of the connecting piece, increases the adjustment range of the weight of the counterweights, improves the convenience of the installation of the counterweights, and ensures the high reliability of the connection of the counterweights and the frame.

In order to better understand the above technical solution, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

Example 1:

Referring to fig. 1 to 6, the present utility model provides a counterweight mounting device for construction machine, comprising: the device comprises a counterweight mounting seat 101, a base counterweight 102, a base connecting rod 103, a locating pin 104, a top counterweight 105, a top connecting rod 106, a limiting plate 107, a fixing bolt 108 and a second locating pin hole 111. The counterweight mounting seat 101 is fixedly connected with a frame of the engineering machinery, two counterweight mounting lugs are symmetrically arranged at the left end and the right end of the counterweight mounting seat 101, a screw hole 109 and a first positioning pin hole 110 are respectively arranged at the upper end of each counterweight mounting lug, the first positioning pin hole 110 is a counter bore, positioning in the height direction of a positioning pin is facilitated, and the upper end mounting surface of each counterweight mounting lug is perpendicular to the axes of the screw hole 109 and the first positioning pin hole 110.

The upper end and the lower extreme of locating pin 104 are the cylinder respectively the top of locating pin 104 upper end is provided with toper location guide face, plays the guide effect when being convenient for the balancing weight assembly, the mid portion of locating pin 104 is provided with middle step, and the locating pin direction of height is spacing of being convenient for, the lower extreme bottom of locating pin 104 is provided with the chamfer, the diameter of middle step is greater than the upper end and the lower extreme diameter of locating pin 104.

The connecting rods 103 include a base connecting rod 111 and a top connecting rod 112.

The bottom design of basic connecting rod 111 is first screw rod, and the inboard design on basic connecting rod 111 top is first screw hole, and first screw hole degree of depth is greater than first screw rod length. The middle of the basic connecting rod 111 is designed to be of a regular hexagon structure, so that the tool can be conveniently clamped for screwing. The length of the base connecting rod 111 from the root of the first screw to the top end of the base connecting rod 111 is the same as the thickness dimension of the base balancing weight 102.

The top connecting rod 112 is basically consistent with the basic connecting rod 111 in structure, the length of the top connecting rod 112 is smaller than that of the basic connecting rod 111, and in order to avoid over positioning of the limiting plate 107 during assembly, a conical guide surface is arranged around the second threaded hole end of the top connecting rod 112, so that the guiding function is realized during assembly of the balancing weight.

A through hole is arranged in the middle of the limiting plate 107, and the aperture of the limiting plate is slightly larger than the diameter of the fixing bolt 108.

The base balancing weight 102 symmetry sets up two through-holes that match connecting rod 103 and with two locating pin holes that match locating pin 104, the interval of locating pin hole and through-hole of base balancing weight 102 and the interval of the first locating pin hole 110 and screw 109 of counter weight mount pad 101 are the same, and the axis of the locating pin hole of base balancing weight 102 and the axis of the first locating pin hole 110 of counter weight mount pad 101 are on same straight line, the axis of the through-hole of base balancing weight 102 and screw 109 axis are on same straight line, the through-hole aperture of base balancing weight 102 slightly is greater than the diameter of base connecting rod 103, the assembly of base balancing weight 102 of being convenient for, the base balancing weight 102 upper surface sets up the screw hole and is used for the hoist and mount.

The locating pin holes comprise a first locating pin hole 110 and a second locating pin hole 111, the second locating pin hole 111 is a counter bore, the first locating pin hole 110 which is symmetrically arranged is further formed in the top of the basic balancing weight 102, the first locating pin hole 110 is T-shaped, the upper portion of the first locating pin hole 110 is matched with the middle step of the locating pin 104 in a shape of T, the diameter of the upper portion of the first locating pin hole 110 is slightly larger than the diameter of the middle step, the depth of the upper portion of the first locating pin hole 110 is equal to or slightly larger than the thickness of the middle step, a gap is not generated during weight assembly, and the lower portion of the first locating pin hole 110 is matched with the lower end of the locating pin 104. The second locating pin holes 111 that two symmetries set up respectively are in the bottom of basic balancing weight 102 with the bottom of top balancing weight 105, second locating pin hole 111 is the cylinder, second locating pin hole 111 with the upper end cooperation of locating pin 104, second locating pin hole 111 diameter with locating pin 104 upper end diameter is the same, adopts little clearance fit, avoids locating pin 104 to insert the back and has the clearance to produce and rock.

The top balancing weight 105 symmetry sets up two through-holes that match connecting rod 103, top balancing weight 105 lower surface symmetry sets up two second locating pin holes 111, the interval of the second locating pin hole 111 of top balancing weight 105 and the locating pin hole of through-hole and through-hole of basis balancing weight 102 is the same, and the axis of the locating pin hole of basis balancing weight 102 and the axis of the second locating pin hole 111 of top balancing weight 105 are on same straight line, the axis of the through-hole of basis balancing weight 102 and the through-hole axis of top balancing weight 105 are on same straight line, top balancing weight 105 upper surface sets up the screw hole and is used for the hoist and mount.

Example 2:

referring to fig. 1 and 2, the weight mounting device of the construction machine according to the present utility model implements the increase or decrease of the weight by increasing or decreasing the number of the base weights 102.

Firstly, two positioning pins 104 are installed on a counterweight installation seat 101, conical guide surfaces of the positioning pins 104 face to the upper part, a spanner and other tools are used for screwing the screw end of a basic connecting rod 103 into a screw hole 109 of the counterweight installation seat 101, a basic counterweight 102 is assembled, and first-stage assembly is realized; and the positioning pins 104 and the foundation connecting rods 103 are repeatedly installed, so that the assembly of a plurality of groups of foundation balancing weights 102 is realized. Then install two locating pins 104 in the first locating pin hole 110 of the basic balancing weight 102 of uppermost, connect the screw rod end of top connecting rod 106 in the screw hole of the basic connecting rod 103 of uppermost, assemble top balancing weight 105, assemble limiting plate 107, screw up fixing bolt 108, realize spacing of direction of height, locating pin 104 has restricted the relative slip between the counter weight, increases the reliability of counter weight assembly.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.

Claims (10)

1. A counterweight mounting device for an engineering machine, characterized in that: the counterweight mounting device includes: the device comprises a counterweight mounting seat (101), a counterweight, a connecting rod, a locating pin (104) and a fixing bolt (108); two counter weight installation lugs are symmetrically arranged at the left end and the right end of the counter weight installation seat (101), screw holes (109) and first positioning pin holes (110) are respectively formed in the upper end of each counter weight installation lug, a connecting rod is fixed above the counter weight installation lug through the screw holes (109), positioning pins (104) are fixed above the counter weight installation lugs through the first positioning pin holes (110), through holes which are symmetrical and matched with the connecting rod are formed in the counter weights, two symmetrical positioning pin holes which are matched with the positioning pins (104) are formed in the end portions of the counter weights, the connecting rod is used for installing a plurality of counter weights above the counter weight installation seat (101) through the through holes in the through holes, and fixing bolts (108) are installed at the top ends of the connecting rod to achieve height limiting, and the positioning pins (104) are fixedly installed in the positioning pin holes to limit relative sliding between the counter weights.

2. The counterweight mounting device for construction machinery according to claim 1, wherein: the upper ends of the two counterweight mounting lugs are the mounting planes of the counterweight blocks, and the axes of the screw holes (109) and the axes of the positioning pin holes are respectively perpendicular to the upper ends of the two counterweight mounting lugs.

3. The counterweight mounting device for construction machinery according to claim 2, wherein: the balancing weight comprises a foundation balancing weight (102) and a top balancing weight (105), the foundation balancing weight (102) is installed above the balancing weight installation seat (101) through a connecting rod and a locating pin (104), and the top balancing weight (105) is arranged at the upper end of the foundation balancing weight (102).

4. A counterweight mounting device for construction machinery according to claim 3, wherein: the connecting rod comprises a basic connecting rod (103) and a top connecting rod (106).

5. The counterweight mounting device for construction machinery according to claim 4, wherein: the utility model provides a foundation connecting rod (103) is whole to be the cylinder, foundation connecting rod (103) wears to establish in the through-hole of foundation balancing weight (102), foundation connecting rod (103) include: the device comprises a base connecting rod (103), a first threaded hole, a first screw rod and a first clamping part, wherein the first threaded hole is formed in the inner side of the top end of the base connecting rod (103), the first screw rod is arranged at the bottom end of the base connecting rod (103), the first screw rod is matched with the first threaded hole and the screw thread of the screw hole (109), the depth of the first threaded hole and the screw hole (109) is greater than or equal to the length of the first screw rod, the first clamping part is arranged at the middle part of the base connecting rod (103), and the outer surface of the first clamping part is in a regular hexagon shape and is used for fastening connection between the base connecting rods (103).

6. The counterweight mounting device for construction machinery according to claim 5, wherein: the top connecting rod (106) is wholly cylindrical, the top connecting rod (106) is arranged in a through hole of the top balancing weight (105) in a penetrating mode, and the top connecting rod (106) comprises: the second screw rod, second screw hole and second clamping part, the second screw hole sets up the inboard on top connecting rod (106), around the outside on top connecting rod (106) top is provided with the toper and connects the guide face top connecting rod (106) top is installed fixing bolt (108), the second screw rod sets up the bottom of top connecting rod (106), the second screw rod with the screw thread matching of first screw hole, just the degree of depth of first screw hole is greater than the length of second screw rod, the second clamping part sets up the middle part on top connecting rod (106), the surface of second clamping part is regular hexagon, is used for fastening connection between top connecting rod (106) and basic connecting rod (103).

7. The counterweight mounting device for construction machinery according to claim 6, wherein: the counterweight installation device further comprises a limiting plate (107), and the limiting plate (107) is arranged between the top end of the top connecting rod (106) and the fixing bolt (108).

8. The counterweight mounting device for construction machinery according to claim 7, wherein: the upper end and the lower end of the locating pin (104) are respectively cylindrical, a conical locating guide surface is arranged at the top of the upper end of the locating pin (104), a middle step is arranged at the middle part of the locating pin (104), a chamfer is arranged at the bottom of the lower end of the locating pin (104), and the diameter of the middle step is larger than that of the upper end and the lower end of the locating pin (104).

9. The counterweight mounting device for construction machinery according to claim 8, wherein: the locating pin holes are counter bores, the locating pin holes comprise first locating pin holes (110) and second locating pin holes (111), the first locating pin holes (110) which are symmetrically arranged are further formed in the top of the base balancing weight (102), and the second locating pin holes (111) which are symmetrically arranged are respectively formed in the bottom of the base balancing weight (102) and the bottom of the top balancing weight (105).

10. The counterweight mounting device for construction machinery according to claim 9, wherein: the first positioning pin hole (110) is T-shaped, the upper part of the first positioning pin hole (110) is in stepped fit with the middle of the positioning pin (104), and the lower part of the first positioning pin hole (110) is in fit with the lower end of the positioning pin (104); the second positioning pin hole (111) is cylindrical, and the second positioning pin hole (111) is matched with the upper end of the positioning pin (104).